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Property and Equipment (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
Property and Equipment (Narrative) (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019	Mar. 31, 2019
Property, Plant and Equipment [Line Items]
Depreciation	$ 1,100,000	$ 700,000	$ 2,400,000	$ 2,100,000
Non-cash capitalized costs	500,000		503,000
Additional depreciation	500,000		500,000
Impairment of long-lived assets	33,000	$ 200,000	33,000	$ 730,000
Property and equipment, net	8,088,000		8,088,000			$ 9,830,000
Network Sites and Equipment [Member]
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets			22,000
Property and equipment, net	$ 0		$ 0
Network Sites and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			5 years
Network Sites and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			10 years
Furniture and Fixtures and Other Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			2 years
Furniture and Fixtures and Other Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			5 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			10 years
Computer Software, Internal Use [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			5 years
Computer Software, Internal Use [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life			7 years
TeamConnect LLC [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, net					$ 72,000
Ownership percentage	19.50%		19.50%		19.50%
Property, Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets			$ 22,000
Right Of Use Asset [Member]
Property, Plant and Equipment [Line Items]
Impairment of long-lived assets	$ 11,000		11,000
Property and equipment, net	$ 0		$ 0

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019
Current Assets
Cash and cash equivalents	$ 150,243	$ 76,722
Accounts receivable, net of allowance for doubtful accounts of $15 and $77, respectively	83	444
Prepaid expenses and other current assets	2,011	1,180
Total current assets	152,337	78,346
Property and equipment, net	8,088	9,830
Right of use assets, net	6,841
Intangible assets	108,335	107,548
Capitalized patent costs, net		184
Equity method investment	40
Other assets	188	845
Total assets	275,829	196,753
Current liabilities
Accounts payable and accrued expenses	4,478	5,106
Restructuring reserve	1,179	2,758
Due to related parties	106	183
Operating lease liabilities	1,706
Deferred revenue	747	792
Total current liabilities	8,216	8,839
Noncurrent liabilities
Operating lease liabilities	7,442
Deferred revenue	2,915	3,466
Deferred income tax	1,279	685
Other liabilities	723	2,999
Total liabilities	20,575	15,989
Commitments and contingencies
Stockholders' equity
Preferred stock, $0.0001 par value per share, 10,000,000 shares authorized and no shares outstanding at December 31, 2019 and March 31, 2019
Common stock, $0.0001 par value per share, 100,000,000 shares authorized and 17,146,680 shares issued and outstanding at December 31, 2019 and 14,739,145 shares issued and outstanding at March 31, 2019	2	1
Additional paid-in capital	449,428	349,227
Accumulated deficit	(194,176)	(168,464)
Total stockholders' equity	255,254	180,764
Total liabilities and stockholders' equity	$ 275,829	$ 196,753

Consolidated Statement of Stockholders’ Equity - USD ($)
$ in Thousands

Common Stock [Member]

Additional Paid-in Capital [Member]

Accumulated Deficit [Member]

Total

Cumulative effect of change in accounting principle

$ 768

Balance

$ 1

$ 335,767

(126,471)

209,297

Balance at Mar. 31, 2018

$ 1

335,767

(127,239)

208,529

Balance, Shares at Mar. 31, 2018

14,487,650

Equity based compensation

^[1]

8,936

Equity based compensation, Shares

^[1]

68,082

Stock option exercises

2,564

Stock option exercises, Shares

125,976

Shares withheld for taxes

(139)

Shares withheld for taxes, Shares

(5,300)

Net loss

(32,432)

Balance at Dec. 31, 2018

$ 1

347,128

(158,903)

188,226

Balance, Shares at Dec. 31, 2018

14,676,408

Balance at Sep. 30, 2018

$ 1

343,930

(150,553)

193,378

Balance, Shares at Sep. 30, 2018

14,573,267

Equity based compensation

^[1]

1,459

Equity based compensation, Shares

^[1]

18,014

Stock option exercises

1,739

Stock option exercises, Shares

85,127

Net loss

(8,350)

Balance at Dec. 31, 2018

$ 1

347,128

(158,903)

188,226

Balance, Shares at Dec. 31, 2018

14,676,408

Cumulative effect of change in accounting principle

(188)

188

Balance

$ 1

349,039

(168,276)

180,764

Balance at Mar. 31, 2019

$ 1

349,227

(168,464)

180,764

Balance, Shares at Mar. 31, 2019

14,739,145

Issuance of stock during July 2019 follow-on offering, net of closing costs

$ 1

94,243

94,244

Issuance of stock during July 2019 follow-on offering, net of closing costs, Shares

2,222,223

Equity based compensation

^[1]

4,393

Equity based compensation, Shares

^[1]

93,956

Stock option exercises

2,220

Stock option exercises, Shares

102,323

Shares withheld for taxes

(467)

Shares withheld for taxes, Shares

(10,967)

Net loss

(25,900)

Balance at Dec. 31, 2019

$ 2

449,428

(194,176)

255,254

Balance, Shares at Dec. 31, 2019

17,146,680

Balance at Sep. 30, 2019

$ 2

447,845

(185,365)

262,482

Balance, Shares at Sep. 30, 2019

17,125,938

Equity based compensation

^[1]

1,404

Equity based compensation, Shares

^[1]

13,259

Stock option exercises

200

Stock option exercises, Shares

8,000

Shares withheld for taxes

(21)

Shares withheld for taxes, Shares

(517)

Net loss

(8,811)

Balance at Dec. 31, 2019

$ 2

$ 449,428

$ (194,176)

$ 255,254

Balance, Shares at Dec. 31, 2019

17,146,680

[1]	includes restricted shares

Stock Acquisition Rights, Stock Options and Warrants (Summary of Performance Stock Activity) (Details) - Performance Stock Units [Member]	9 Months Ended
	Dec. 31, 2019 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Outstanding \| shares	109,138
Stock, Granted \| shares	11,307
Stock, Forfeited \| shares
Stock, Vested \| shares
Stock Outstanding \| shares	120,445
Weighted Average Grant Date Fair Value, Stock Outstanding \| $ / shares	$ 23.80
Weighted Average Grant Date Fair Value, Stock, Granted \| $ / shares	38.67
Weighted Average Grant Date Fair Value, Stock, Forfeited \| $ / shares
Weighted Average Grant Date Fair Value, Stock, Vested \| $ / shares
Weighted Average Grant Date Fair Value, Stock Outstanding \| $ / shares	$ 25.19

Summary of Significant Accounting Policies

9 Months Ended

Dec. 31, 2019

Summary of Significant Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2.Summary of Significant Accounting Policies

Basis of Presentation and Use of Estimates

The unaudited consolidated financial statements and accompanying notes are prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”) for interim financial information. Pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”), certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with US GAAP have been condensed or omitted.

Because certain information and footnote disclosures have been condensed or omitted, these unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2019, as filed on May 20, 2019 with the SEC. In the Company’s opinion all normal and recurring adjustments considered necessary for a fair presentation of the financial position, results of operations and cash flows for the periods presented have been included. The Company believes that the disclosures made in the unaudited consolidated interim financial statements are adequate to make the information not misleading. The results of operations for the interim periods presented are not necessarily indicative of the results for the year. The Company is also required to make certain estimates with regard to the valuation of awards and forfeiture rates for its share-based award programs. New estimates in the period relate to determining the Company’s estimated incremental borrowing rate in recognizing right of use assets and operating lease liabilities. Estimates and assumptions are reviewed periodically, and the effects of revisions are reflected in the financial statements in the applicable period. Accordingly, actual results could materially differ from those estimates.

The accompanying consolidated financial statements include the accounts of the Company and its subsidiaries, including PDV Spectrum Holding Company, LLC formed in April 2014. All significant intercompany accounts and transactions have been eliminated in consolidation.

Reclassifications

Certain prior year amounts have been reclassified to conform to the presentation of the corresponding amounts in the financial statements for the three and nine months ended December 31, 2019. These reclassifications had no effect on previously reported net loss or net loss per common share basic and diluted.

Cash and Cash Equivalents

All highly liquid investments with maturities of three months or less at the time of purchase are considered cash equivalents. Cash equivalents are stated at cost, which approximates the quoted market value and include amounts held in money market funds.

Property and equipment

Property and equipment is stated at cost. Depreciation is computed using the straight-line method over the shorter of the estimated useful lives of the assets or the applicable lease term. The carrying amount at the balance sheet date of long-lived assets under construction in process includes assets purchased, constructed or being developed internally that are not yet in service. Depreciation commences when the assets are placed in service. Depreciation rates for assets are updated periodically to account for changes, if any, in the estimated useful lives of the assets, lease terms, management’s strategic objectives, estimated residual values or obsolescence. Changes in estimates will result in adjustments to depreciation expense prospectively.

Accounting for Asset Retirement Obligations

An asset retirement obligation is evaluated and recorded as appropriate on assets for which the Company has a legal obligation to retire. The Company records a liability for an asset retirement obligation and the associated asset retirement cost at the time the underlying asset is acquired and put into service. Subsequent to the initial measurement of the asset retirement obligation, the obligation is adjusted at the end of each period to reflect the passage of time and changes, if any, in the estimated future cash flows underlying the obligation. Over time, the liability is accreted to its present value and the capitalized cost is depreciated over the estimated useful life of the asset.

The Company enters into long-term leasing arrangements primarily for tower site locations. The Company constructs assets at these locations and, in accordance with the terms of many of these agreements, the Company is obligated to restore the premises to their original condition at the conclusion of the agreements, generally at the demand of the other party to these agreements. The Company recognizes the fair value of a liability for an asset retirement obligation and capitalizes that cost as part of the cost basis of the related asset, depreciating it over the useful life of the related asset. Upon settlement of the obligation, any difference between the cost to retire the asset and the recorded liability is recognized in the Consolidated Statement of Operations.

As of December 31, 2019, the Company revised its asset retirement obligations accrual to $0.8 million based on estimated future cash flows.

Changes in the liability for the asset retirement obligations for December 31, 2019 and March 31, 2019 are summarized below (in thousands):


	Asset Retirement Obligations
Balance at March 31, 2019	$	328
Revision of estimate		503
Accretion expense		—
Balance at December 31, 2019		831
Less amount classified as current – included in accounts payable and accrued expenses		164
Noncurrent liabilities - included in other liabilities	$	667

Intangible Assets

Intangible assets are wireless licenses that will be used to provide the Company with the exclusive right to utilize designated radio frequency spectrum to provide wireless communication services. While licenses are issued for only a fixed time, generally ten years, such licenses are subject to renewal by the FCC. License renewals have occurred routinely and at nominal cost in the past. There are currently no legal, regulatory, contractual, competitive, economic or other factors that limit the useful life of the Company’s wireless licenses. As a result, the Company has determined that the wireless licenses should be treated as an indefinite-lived intangible asset. The Company will evaluate the useful life determination for its wireless licenses each year to determine whether events and circumstances continue to support their treatment as an indefinite useful life asset.

The licenses are tested for impairment annually on an aggregate basis, as the Company will be utilizing the wireless licenses on an integrated basis as part of developing broadband. In Fiscal 2019, the Company performed a step one quantitative impairment test to determine if the fair value is greater than carrying value. Estimated fair value is determined using a market-based approach. There are no triggering events indicating impairment in the nine months ended December 31, 2019.

Patent Costs

Costs to acquire a patent on certain aspects of the Company’s technology have been capitalized. These amounts are amortized, subject to periodic evaluation for impairment, over statutory lives following award of the patent. Gross patent costs are approximately $572,000 at March 31, 2019 and the associated accumulated amortization amounted to approximately $388,000. As of December 31, 2019, the Company completed the transfer of the intellectual property rights with a net book value of $174,000 in exchange for a 19.5% ownership interest to TeamConnect LLC (“LLC”). Amortization expense was approximately $10,000 for the nine months ended December 31, 2019 and December 31, 2018, respectively.

Long-Lived Asset and Right of Use Asset Impairment

The Company evaluates long-lived assets, including right of use assets, other than intangible assets with indefinite lives, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset group may not be recoverable. Asset groups are determined at the lowest level for which identifiable cash flows are largely independent of cash flows of other groups of assets and liabilities. When the carrying amount of the asset groups are not recoverable and exceeds its fair value, an impairment loss is recognized equal to the excess of the asset group’s carrying value over the estimated fair value. During the nine months ended December 31, 2019, the Company recorded a $33,000 non-cash impairment charge for long-lived assets consisting of $22,000 for property and equipment and $11,000 for a right of use asset to reduce the carrying values to zero. During the nine months ended December 31, 2018, the Company recorded a $0.7 million non-cash charge for long-lived asset impairment of its radio assets to reduce the carrying value to the estimated recoverable amount.

Equity Method Investment

The Company’s 19.5% investment in LLC for which the Company is not the primary beneficiary and does not influence or control the activities that most significantly impact the LLC’s economic performance, are not consolidated and are accounted for under the equity method of accounting. Under the equity method of accounting, the LLC’s accounts are not reflected within the Company’s consolidated balance sheets and statements of operations. The Company's share of the earnings of the LLC is reported as income (loss) on equity method investment in the Company’s consolidated statements of operations. The Company’s carrying value in an equity method investment is reported as equity method investment on the Company’s consolidated balance sheets.

If the Company’s carrying value in an equity method is reduced to zero, no further losses are recorded in the Company’s consolidated financial statements unless the Company guarantees obligations of the LLC or commits additional funding. When the LLC subsequently reports income, the Company will not record its share of such income until it equals the amount of its share of losses not previously recognized.

Leases

Leases in which the Company is the lessee are comprised of corporate office space and tower space. Substantially all of the leases are classified as operating leases. The Company is obligated under certain lease agreements for office space with lease terms expiring on various dates from October 14, 2025 through June 30, 2027, which includes a ten-year lease extension for its corporate headquarters. The Company entered into multiple lease agreements for tower space related to its spectrum holdings.

In accordance with Financial Accounting Standards Board, (“FASB”) Accounting Standards Update (“ASU”) 2016-02 Leases (“ASC 842”), the Company recognized right of use (“ROU”) assets and corresponding lease liabilities on its Consolidated Balance Sheet for its operating lease agreements. The Company elected the package of practical expedients for its long-term operating leases, which permits the Company not to reassess under the new standard the prior conclusions about lease identification, lease classification and initial direct costs. See Note 9 – Leases for further discussion, including the impact on the Company’s consolidated financial statements and required disclosures.

Income Taxes

The Company utilizes the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for the expected future tax consequences of temporary differences between the carrying amounts and the tax basis of assets and liabilities as well as from net operating loss and tax credit carryforwards. The effect on deferred tax assets and liabilities from a change in income tax rates is recognized in operations in the period that includes the enactment date. A valuation allowance is established when it is estimated that it is more likely than not that the tax benefit of a deferred tax asset will not be realized.

Revenue Recognition

Revenues are recognized when a contract with a customer exists and control of the promised goods or services is transferred to the customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services and the identified performance obligation has been satisfied.

A performance obligation is a promise in a contract to transfer a distinct good or service to the customer and is the unit of account in Accounting Standards Update 2014-09, Revenue from Contracts with Customers, (“ASC 606”). A contract’s transaction price is allocated to each distinct performance obligation and is recognized as revenue when, or as, the performance obligation is satisfied, which typically occurs when the services are rendered. Determining whether products and services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. The Company’s contracts with customers may include multiple performance obligations. For such arrangements, the Company allocates revenue to each performance obligation based on its relative standalone selling price. It generally determines standalone selling prices based on the prices charged to customers under contracts involving only the relevant performance obligation. Judgment may be used to determine the standalone selling prices for items that are not sold separately, including services provided at no additional charge. Most of the Company’s performance obligations are satisfied over time as services are provided.

The Company recognizes an asset for the incremental costs of obtaining a contract with a customer if it expects the benefit of those costs to be longer than one year. The Company has determined that certain sales commissions meet the requirements to be capitalized and have been recorded as an asset upon the Company’s adoption of ASC 606. As a result of the customers being assigned to A BEEP and Goosetown (see Note 3 below), the Company’s capitalized sales commissions were impaired on April 1, 2019.

Stock Compensation

The Company accounts for stock options in accordance with US GAAP, which requires the measurement and recognition of compensation expense, based on the estimated fair value of awards granted to consultants, employees and directors. The Company estimates the fair value of share-based awards on the date of grant using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is recognized as expense in the Company’s statements of operations over the requisite service periods. In the event the participant’s employment by or engagement with (as a director or otherwise) the Company terminates before exercise of the options granted, the stock options granted to the participant shall immediately expire and all rights to purchase shares thereunder shall immediately cease and expire and be of no further force or effect, other than applicable exercise rights for vested shares that may extend past the termination date as provided for in the participant’s applicable option award agreement. Additionally, the Compensation Committee adopted an Executive Severance Plan (the “Severance Plan”) in February 2015, which was amended in February 2019, and the Company subsequently entered into Severance Plan Participation Agreements with its executive officers and certain key employees. In addition to providing participants with severance payments, the Severance Plan provides for accelerated vesting and extends the exercise period for outstanding equity awards if the Company terminates a participant’s service for reasons other than cause, death or disability or the participant terminates his or her service for good reason, whether before or after a change of control (each of such terms as defined in the Severance Plan).

To calculate option-based compensation, the Company uses the Black-Scholes option-pricing model. The Company’s determination of fair value of option-based awards on the date of grant using the Black-Scholes model is affected by assumptions regarding a number of subjective variables.

The fair value of restricted stock, restricted stock units and performance units are measured based upon the quoted closing market price for the stock on the date of grant. The compensation cost for the restricted stock and restricted stock units is recognized on a straight-line basis over the vesting period. The compensation cost for the performance units is recognized when the performance criteria are expected to be complete.

No tax benefits have been attributed to the share-based compensation expense because the Company maintains a full valuation allowance for all net deferred tax assets.

Accounting for Uncertainty in Income Taxes

The Company recognizes the effect of tax positions only when they are more likely than not to be sustained. Management has determined that the Company had no uncertain tax positions that would require financial statement recognition or disclosure. The Company is no longer subject to U.S. federal, state or local income tax examinations for periods prior to 2016. The Company recognizes interest and penalties related to unrecognized tax benefits as a component of income tax expense.

Net Loss Per Share of Common Stock

Basic net loss per common share is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of common shares outstanding during the period, without consideration for potentially dilutive securities. For purposes of the diluted net loss per share calculation, preferred stock, stock options, restricted stock and warrants are considered to be potentially dilutive securities. Because the Company has reported a net loss for the three months and nine months ended December 31, 2019 and 2018, respectively, diluted net loss per common share is the same as basic net loss per common share for those periods.

Common stock equivalents resulting from potentially dilutive securities approximated 1,396,000 and 1,386,000 at December 31, 2019 and 2018, respectively, and have not been included in the dilutive weighted average shares of common stock outstanding, as their effects are anti-dilutive.

Recently Issued Accounting Pronouncements

In June 2016, the FASB issued ASC 326, Financial Instruments - Credit Losses and has subsequently modified several areas of the standard in order to provide additional clarity and improvements. The new standard requires entities to use a Current Expected Credit Loss impairment model based on expected losses rather than incurred losses. Under this model, an entity would recognize an impairment allowance equal to its current estimate of all contractual cash flows that the entity does not expect to collect from financial assets measured at amortized cost within the scope of the standard. The entity's estimate would consider relevant information about past events, current conditions and reasonable and supportable forecasts, which will result in recognition of lifetime expected credit losses. As a smaller reporting company, the standard will be effective for the Company's fiscal year beginning January 2023, including interim reporting periods within that fiscal year, although early adoption is permitted. The Company is evaluating the potential impact that ASC 326 and subsequent modifications may have on its consolidated financial statements.

Other accounting standards that have been issued or proposed by the FASB or other standard-setting bodies that do not require adoption until a future date are not expected to have a material impact on the Company’s consolidated financial statements upon adoption.

Recently Adopted Accounting Pronouncements

Accounting for Leases

In February 2016, the FASB issued ASC 842, which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both lessees and lessors. Originally, entities were required to adopt ASU 2016-02 using a modified retrospective approach at the beginning of the earliest comparative period presented in the financial statements and the recognition of a cumulative-effect adjustment to the opening balance of retained earnings. The FASB subsequently issued ASU 2018-10 and ASU 2018-11 in July 2018, which provide clarifications and improvements to ASU 2016-02 (collectively, the “new lease standard”). ASU 2018-11 also provides the optional transition method which allows companies to apply the new lease standard at the adoption date instead of at the earliest comparative period presented and continue to apply the provisions of the previous lease standard in its annual disclosures for the comparative periods. The new lease standard requires lessees to present a ROU asset and a corresponding lease liability on the balance sheet. Lessor accounting is substantially unchanged compared to the current accounting guidance. Additional footnote disclosures related to leases will also be required.

On April 1, 2019, the Company adopted the new lease standard using the optional transition method. The comparative financial information will not be restated and will continue to be reported under the previous lease standard in effect during those periods. In addition, the new lease standard provides a number of optional practical expedients in transition. The Company elected the package of practical expedients. As such, the Company will not reassess whether expired or existing contracts are or contain a lease; will not need to reassess the lease classifications or reassess the initial direct costs associated with expired or existing leases. The Company did not elect the use of hindsight or the practical expedient pertaining to land easements; the latter not being applicable to the Company.

The new lease standard also provides practical expedients for an entity’s ongoing accounting. The Company elected the short-term lease recognition exemption for all leases that qualify. This means, for those leases that qualify, the Company will not recognize ROU assets or lease liabilities, including not recognizing ROU assets or lease liabilities for existing short-term leases of those assets in transition. The Company elected the practical expedient to not separate lease and non-lease components for certain classes of assets (office buildings).

On April 1, 2019, the Company recognized ROU assets of $7.1 million and lease liabilities of approximately $9.4 million, derecognized deferred rent liabilities of approximately $2.3 million and did not record an adjustment to accumulated deficit. As of March 31, 2019, deferred rent liabilities were reported under accounts payable and accrued expenses – other amounting to $0.2 million and non-current other liabilities amounting to $2.1 million. When measuring lease liabilities for leases that were classified as operating leases, the Company discounted lease payments using its estimated incremental borrowing rate at April 1, 2019. The weighted average incremental borrowing rate applied was 13%. The Company’s adoption of the new lease standard did not impact its consolidated statements of operations and its statements of cash flows. No cumulative effect adjustment was recognized as the amount was not material. See Note 9 – Leases for further discussion, including the impact on the Company’s consolidated financial statements and required disclosures.

Stock Compensation

In June 2018, the FASB issued ASU No. 2018-07, Compensation – Stock Compensation (Topic 718) – Improvements to Nonemployee Share-based Payment Accounting. ASU 2018-07 addresses several aspects of the accounting for nonemployee share-based payment transactions, including share-based payment transactions for acquiring goods and services from nonemployees. ASU 2018-07 is effective for the Company’s fiscal year 2020 beginning April 1, 2019. As a result of adopting the ASU on April 1, 2019, the Company reduced its accumulated deficit by $188,000. See Note 11 – Stock Acquisition Rights, Stock Options and Warrants for further discussion, including the impact on the Company’s consolidated financial statements and required disclosures.

Income Taxes (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2019	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Line Items]
Statutory federal tax, percent	35.00%	21.00%
Deferred tax expense		$ 594
Internal Revenue Service (IRS) [Member]
Income Tax Disclosure [Line Items]
Net NOL carryforwards			$ 164,000
Net operating loss carryforwards, no expiration		33,000	72,600	$ 34,100
Net operating loss carryforwards		28,600	$ 38,500	$ 125,700
Federal and State [Member] \| Earliest Tax Year [Member]
Income Tax Disclosure [Line Items]
Operating loss carryforwards, expiration year			Jan. 01, 2020	Jan. 01, 2019
Federal and State [Member] \| Latest Tax Year [Member]
Income Tax Disclosure [Line Items]
Operating loss carryforwards, expiration year			Dec. 31, 2037	Dec. 31, 2037
State [Member]
Income Tax Disclosure [Line Items]
Net NOL carryforwards			$ 74,000
Net operating loss carryforwards, no expiration			10,300	$ 4,400
Net operating loss carryforwards		$ 17,000	$ 6,000	$ 51,300

Leases

9 Months Ended

Dec. 31, 2019

Leases [Abstract]

Leases

9. Leases

A lease is defined as a contract that conveys the right to control the use of identified property, plant or equipment for a period of time in exchange for consideration. On April 1, 2019, the Company adopted ASC 842 and it primarily affected the accounting treatment for operating lease agreements in which the Company is the lessee.

Substantially all of the leases in which the Company is the lessee are comprised of corporate office space and tower space. The Company is obligated under certain lease agreements for office space with lease terms expiring on various dates from October 14, 2025 through June 30, 2027, which includes a ten-year lease extension for its corporate headquarters. The Company entered into multiple lease agreements for tower space related to its TeamConnect business. The lease expiration dates range from April 16, 2020 to June 30, 2026.

Substantially all of the Company’s leases are classified as operating leases, and as such, were previously not recognized on the Company’s Consolidated Balance Sheet. With the adoption of Topic 842, operating lease agreements are required to be recognized on the Consolidated Balance Sheet as ROU assets and corresponding lease liabilities.

On April 1, 2019, the Company recognized ROU assets of $7.1 million and lease liabilities of approximately $9.4 million, and derecognized deferred rent liabilities of approximately $2.3 million. As of March 31, 2019, deferred rent liabilities were reported under accounts payable and accrued expenses – other amounting to $0.2 million and non-current other liabilities amounting to $2.1 million. The Company elected not to recognize ROU assets and lease liabilities arising from short-term office leases, leases with initial terms of twelve months or less (deemed immaterial) on the Consolidated Balance Sheets.

ROU assets include any prepaid lease payments and exclude any lease incentives and initial direct costs incurred. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. The lease terms may include options to extend or terminate the lease if it is reasonably certain that the Company will exercise that option.

During the three and nine months ended December 31, 2019, the Company recorded a $11,000 non-cash charge impairment for an ROU asset to reduce the carrying value to zero. The lease relating to the ROU asset impaired will expire on June 2020.

When measuring lease liabilities for leases that were classified as operating leases, the Company discounted lease payments using its estimated incremental borrowing rate at April 1, 2019. The weighted average incremental borrowing rate applied was 13%. As of December 31, 2019, the Company’s leases had a remaining weighted average term of 5.19 years.

Rent expense amounted to approximately $0.7 million and $2.0 million for the three and nine months ended December 31, 2019, respectively. Total rent expense amounted to approximately $0.6 million and $2.0 million for the three and nine months ended December 31, 2018 respectively.

The following table presents net lease cost (in thousands):


	Three Months Ended		Nine Months Ended
	December 31, 2019		December 31, 2019
Lease cost
Operating lease cost (cost resulting from lease payments)	$	662	$	1,952
Short term lease cost		10		42
Sublease income		(4)		(13)
Net lease cost	$	668	$	1,981

The following table presents other supplemental lease information (in thousands):


	Nine Months Ended
	December 31, 2019
Operating lease - operating cash flows (fixed payments)	$	2,012
Operating lease - operating cash flows (liability reduction)	$	1,044
Right of use assets obtained in exchange for new operating lease liabilities	$	7,904
Non-current assets - right of use assets, net	$	6,841
Current liabilities - operating lease liabilities	$	1,706
Non-current liabilities - operating lease liabilities	$	7,442

Future minimum payments under non-cancelable leases for office and tower spaces (exclusive of real estate tax, utilities, maintenance and other costs borne by the Company), for the remaining terms of the leases following the nine months ended December 31, 2019 are as follows (in thousands):


		Operating
Fiscal Year		Leases
2020 (excluding the nine months ended December 31, 2019)	$	710
2021		2,670
2022		2,265
2023		2,098
2024		1,893
After 2024		3,061
Total future minimum lease payments		12,697
Amount representing interest		(3,549)
Present value of net future minimum lease payments	$	9,148

Stock Acquisition Rights, Stock Options and Warrants (Summary of Stock Option Activity) (Details) - Stock Option [Member]	9 Months Ended
	Dec. 31, 2019 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding \| shares	1,923,634
Options, Granted \| shares	0
Options, Exercised \| shares	(97,323)
Options, Forfeited/Expired \| shares	(10,875)
Options Outstanding \| shares	1,815,436
Weighted Average Exercise Price, Options outstanding \| $ / shares	$ 23.64
Weighted Average Exercise Price, Granted \| $ / shares
Weighted Average Exercise Price, Exercised \| $ / shares	(21.78)
Weighted Average Exercise Price, forfeited/expired \| $ / shares	(48.23)
Weighted Average Exercise Price, Options outstanding \| $ / shares	$ 23.54

Property and Equipment (Tables)

9 Months Ended

Dec. 31, 2019

Property and Equipment [Abstract]

Components of Property and Equipment



	Estimated	December 31,		March 31,
	useful life	2019		2019
Network sites and equipment	5-10 years	$	16,187	$	15,954
Furniture and fixture and other equipment	2-5 years		291		1,026
Computer equipment	5-7 years		143		140
Computer software	1-7 years		480		28
Leasehold improvements	Shorter of the lease term or 10 years		234		351
			17,335		17,499
Less accumulated depreciation			9,333		7,952
			8,002		9,547
Construction in process			86		283
Property and equipment, net		$	8,088	$	9,830

Leases (Narrative) (Details) - USD ($)		3 Months Ended		9 Months Ended
Leases (Narrative) (Details) - USD ($)	Apr. 01, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019
Lease [Line Items]
Lease extension		10 years		10 years
Right of use assets, net	$ 7,100,000	$ 6,841,000		$ 6,841,000
Lease liability	9,400,000	$ 9,148,000		$ 9,148,000
Decrease in deferred rent liability	$ 2,300,000
Weighted average incremental borrowing rate	13.00%	13.00%		13.00%
Weighted average term		5 years 2 months 9 days		5 years 2 months 9 days
Lease rent expense		$ 700,000	$ 600,000	$ 2,000,000	$ 2,000,000
Accounts payable and accrued expenses						$ 200,000
Non-current other liabilities						2,100,000
Impairment of long-lived assets		33,000	$ 200,000	33,000	$ 730,000
Property and equipment, net		8,088,000		8,088,000		$ 9,830,000
Property, Plant and Equipment [Member]
Lease [Line Items]
Impairment of long-lived assets				22,000
Right Of Use Asset [Member]
Lease [Line Items]
Impairment of long-lived assets		11,000		11,000
Property and equipment, net		$ 0		$ 0

Revenue (Tables)

9 Months Ended

Dec. 31, 2019

Revenue [Abstract]

Schedule of Contract Assets


	Contract Assets
Balance at March 31, 2019	$	436
Impairment		(436)
Balance at December 31, 2019	$	—

Stock Acquisition Rights, Stock Options and Warrants (Narrative) (Details) - USD ($)			3 Months Ended		9 Months Ended
	Jan. 01, 2020	Sep. 15, 2014	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Jul. 31, 2019	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of stock, price per share							$ 45.00
Subsidiary equity units for which investor has right to convert to common stock			500,000		500,000
Cumulative effect of change in accounting principle									$ 768,000
Accounting Standards Update 2018-07 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative effect of change in accounting principle								$ 14,000
2014 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding			23,550		23,550
Shares authorized			3,805,223		3,805,223
Common stock authorized and reserved for issuance			801,273		801,273
Maximum [Member] \| 2014 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of increase in number of shares of common stock issued and outstanding					5.00%
Subsequent Event [Member] \| 2014 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional common stock authorized and reserved for future issuance	342,762
Percentage of increase in number of shares of common stock issued and outstanding	2.00%
Common Class B Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion ratio					one
Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of units owned			100.00%		100.00%
PDV Spectrum Holding Company, LLC [Member] \| Common Class B Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from investment, shares		500,000
Sale of stock, price per share		$ 20.00
Stock issued during period value to purchase of assets		$ 10,000,000
Non-Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested share options granted			$ 2,000,000		$ 2,000,000
Weighted average Period for each stock option award granted					2 years
Performance Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding			179,945		179,945			179,945
Stock compensation expense				$ 700,000		$ 5,600,000
Options, Granted
Performance Stock Options [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense				1,100,000		2,100,000
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding			1,815,436		1,815,436			1,923,634
Stock compensation expense			$ 300,000		$ 1,300,000
Unrecognized compensation cost related to non-vested share options granted			2,800,000		$ 2,800,000
Options, Granted					0
Stock Option [Member] \| Accounting Standards Update 2018-07 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative effect of change in accounting principle								$ 174,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense			1,100,000	700,000	$ 3,100,000	3,400,000
Unvested compensation expense			9,800,000		$ 9,800,000
Weighted average period of recognition of unrecognized compensation cost					2 years 11 months 12 days
Restricted Stock [Member] \| Restructuring Charges [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense						1,400,000
Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense			0	$ 0	$ 0	$ 0
Unvested compensation expense			$ 3,000,000		$ 3,000,000
Performance Stock Units [Member] \| 2014 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period			11,307		11,307

Concentrations of Credit Risk (Details) - item	6 Months Ended	9 Months Ended
Concentrations of Credit Risk (Details) - item	Sep. 30, 2019	Dec. 31, 2019
Concentration Risk [Line Items]
Number of carriers	2
Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Number of carriers		1

Business Concentrations (Details) - item	3 Months Ended		6 Months Ended	9 Months Ended		12 Months Ended
Business Concentrations (Details) - item	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019
Concentration Risk [Line Items]
Number of carriers			2
Domestic Sales [Member] \| Sales Revenue, Services, Net [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Number of carriers	1	1		1	1
Concentration risk, percentage		21.00%			28.00%
Domestic Sales [Member] \| Accounts Receivable [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Number of carriers				1		1
Concentration risk, percentage						31.00%
Reseller [Member] \| Sales Revenue, Services, Net [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Number of resellers	1			1
Reseller [Member] \| Accounts Receivable [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Number of resellers				1
Domestic Carrier And Reseller [Member] \| Sales Revenue, Services, Net [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage				23.00%
Domestic Carrier And Reseller [Member] \| Accounts Receivable [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage				87.00%

Leases (Supplemental Lease Information) (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2019	Apr. 01, 2019
Leases [Abstract]
Operating lease - operating cash flows (fixed payments)	$ 2,012
Operating lease - operating cash flows (liability reduction)	1,044
Right of use assets obtained in exchange for new operating lease liabilities	7,904
Non-current assets - right of use assets, net	6,841	$ 7,100
Current liabilities - operating lease liabilities	1,706
Non-current liabilities - operating lease liabilities	$ 7,442

Contingencies	9 Months Ended
Contingencies	Dec. 31, 2019
Contingencies [Abstract]
Contingencies	12.Contingencies Litigation From time to time, the Company may be involved in litigation that arises from the ordinary operations of the business, such as contractual or employment disputes or other general actions. The Company is not involved in any material legal proceedings at this time.

Leases (Future Minimum Payments) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Apr. 01, 2019
Leases [Abstract]
2020 (excluding the nine months ended December 31, 2019)	$ 710
2021	2,670
2022	2,265
2023	2,098
2024	1,893
After 2024	3,061
Total future minimum lease payments	12,697
Amount representing interest	(3,549)
Present value of net future minimum lease payments	$ 9,148	$ 9,400

Related Party Transactions	9 Months Ended
Related Party Transactions	Dec. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	7.Related Party Transactions As of March 31, 2019, the Company owed $5,000 to a consultant firm who is an affiliate of a significant holder of the Company. No such services were provided and owed to the consulting firm for the three and nine months ending December 31, 2019. During the three and nine months ended December 31, 2018, the Company incurred $136,000 in consulting fees to a consultant firm who is an affiliate of a significant shareholder of the Company. The Company purchased $11,000 of equipment from Motorola for the nine months ended December 31, 2019. The Company did not purchase any equipment for the three months ended December 31, 2019. The Company purchased $0.2 million and $0.4 million of equipment from Motorola for the three and nine months ended December 31, 2018, respectively. The Motorola revenue recognized for the three and nine months ended December 31, 2019 and 2018 were approximately $183,000 and $547,000, respectively. As of December 31, 2019 and March 31, 2019, the Company owed $90,000 and $60,000 to Motorola, respectively. Under the terms of the MOU, the Company is obligated to pay the LLC a monthly service fee for a 24-month period ending on January 7, 2021 for its assumption of the Company’s support obligations under the A BEEP and Goosetown agreements. The Company is also obligated to pay the LLC a certain portion of the billed revenue received by the Company from pdvConnect customers for a 48-month period. For the three and nine months ended December 31, 2019, the Company incurred $215,000 and $729,000 under the MOU, respectively. As of December 31, 2019 and March 31, 2019, the Company owed $16,000 and $118,000 to the LLC, respectively.

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Dec. 31, 2019

Summary of Significant Accounting Policies [Abstract]

Basis of Presentation and Use of Estimates

Reclassifications

Cash and Cash Equivalents

Property and Equipment

Property and equipment

Accounting for Asset Retirement Obligations

As of December 31, 2019, the Company revised its asset retirement obligations accrual to $0.8 million based on estimated future cash flows.

Changes in the liability for the asset retirement obligations for December 31, 2019 and March 31, 2019 are summarized below (in thousands):


	Asset Retirement Obligations
Balance at March 31, 2019	$	328
Revision of estimate		503
Accretion expense		—
Balance at December 31, 2019		831
Less amount classified as current – included in accounts payable and accrued expenses		164
Noncurrent liabilities - included in other liabilities	$	667

Intangible Assets

Patent Costs

Long-Lived Asset and Right of Use Asset Impairment

Equity Method Investment

No tax benefits have been attributed to the share-based compensation expense because the Company maintains a full valuation allowance for all net deferred tax assets.

Accounting for Uncertainty in Income Taxes

Net Loss Per Share of Common Stock

Recently Issued Accounting Pronouncements & Recently Adopted Accounting Pronouncements

Recently Issued Accounting Pronouncements

Recently Adopted Accounting Pronouncements

Accounting for Leases

Stock Compensation

Impairment and Restructuring Charges

9 Months Ended

Dec. 31, 2019

Impairment and Restructuring Charges [Abstract]

Impairment and Restructuring Charges

8.Impairment and Restructuring Charges

Long-lived Assets and Right of Use Assets Impairment.

During the nine months ended December 31, 2018, the Company reviewed assets designated for its TeamConnect business. As a result of the Company’s transfer of the TeamConnect business, it determined that the carrying value of radios and related accessories were not fully recoverable. As a result, the Company recorded a non-cash asset impairment charge of $0.2 million and $0.7 million in the three and nine months ending December 31, 2018, respectively, to reduce the carrying value of these assets to zero.

During the three and nine months ended December 31, 2019, the Company recorded a $33,000 non-cash impairment charge for long-lived assets consisting of $22,000 for property and equipment and $11,000 for a right of use asset to reduce the carrying values to zero.

Restructuring Charges.

April 2018 and June 2018 restructuring activities. In April 2018, the Company announced a shift in its focus and resources in order to pursue its regulatory initiatives at the FCC and prepare for the future deployment of broadband and other advanced technologies and services. In light of this shift in focus, the Company’s board of directors also approved a chief executive officer transition plan, under which, John Pescatore, the Company’s chief executive officer and president, transitioned to the position of vice chairman and Morgan O’Brien, the Company’s then-current vice chairman, assumed the position as the new chief executive officer. In connection with the transition, the Company and Mr. Pescatore entered into a Continued Service, Consulting and Transition Agreement and a separate Consulting Agreement (the “CEO Transition Agreements”) and the Company also entered into additional consulting and transition agreements with several other key employees.

On June 1, 2018, the Company’s board of directors approved an initial plan to restructure its business aimed at reducing the operating costs of its TeamConnect and pdvConnect businesses and better aligning and focusing its business priorities on its spectrum initiatives. As part of the restructuring plan, the Company eliminated approximately 20 positions, or 20% of its workforce, primarily from its TeamConnect and pdvConnect businesses. In August 2018, the Company continued with its restructuring efforts and eliminated approximately seven additional positions.

For the nine months ended December 31, 2019, total accrued restructuring charges for the April 2018 and June 2018 restructuring activities were as follows (in thousands):


	Restructuring Activities
Balance at March 31, 2019	$	2,655
Cash payments		(1,577)
Balance at December 31, 2019 (classified as current liabilities - restructuring reserve)	$	1,078

December 2018 cost reductions. On December 31, 2018, the Company’s board of directors approved the following cost reduction actions: (i) the elimination of approximately 20 positions, or 30% of the Company’s workforce and (ii) the closure of its office in San Diego, California (collectively, the “December 2018 Cost-Reduction Actions”). For the three and nine months ended December 31, 2019, the Company recorded an additional restructuring charge relating to the December 2018 Cost-Reduction Actions amounting to $34,000 and $206,000, respectively, related to employee severance and benefit costs. For the nine months ended December 31, 2019, the Company reduced the facility exit costs accrual for our San Diego, California office by approximately $28,000. An additional $57,000 of restructuring charges will be incurred approximately through the third quarter of fiscal 2021 related to employee retention costs. The Company completed the cost reduction and restructuring actions in July 31, 2019, and the related cash payments for severance costs was completed by the end of August 31, 2019.

For the nine months ended December 31, 2019, total December 2018 cost reduction charges were as follows (in thousands):


	Restructuring Activities
Balance at March 31, 2019	$	679
Severance costs		206
Facility exit		(28)
Cash payments		(699)
Balance at December 31, 2019		158
Less amount classified as current liabilities - restructuring reserve		101
Noncurrent liabilities - included in other liabilities	$	57

Stock Acquisition Rights, Stock Options and Warrants (Summary of Performance Stock Options) (Details) - Performance Stock Options [Member]	9 Months Ended
	Dec. 31, 2019 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding \| shares	179,945
Options, Granted \| shares
Options, Exercised \| shares
Options, Forfeited/Expired \| shares
Options Outstanding \| shares	179,945
Weighted Average Exercise Price, Options outstanding \| $ / shares	$ 25.83
Weighted Average Exercise Price, Granted \| $ / shares
Weighted Average Exercise Price, Exercised \| $ / shares
Weighted Average Exercise Price, forfeited/expired \| $ / shares
Weighted Average Exercise Price, Options outstanding \| $ / shares	$ 25.83

Equity Method Investment (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2019	Mar. 31, 2019
Schedule of Equity Method Investments [Line Items]
Transfer to Investments			$ 14
Transfer Of Patent To Investments			34
Loss on disposal of capitalized patent costs			(140)
Equipment	$ 8,088		$ 8,088	$ 9,830
TeamConnect LLC [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	19.50%	19.50%	19.50%
Transfer to Investments	$ 174		$ 174
Transfer Of Patent To Investments			34
Loss on disposal of capitalized patent costs			140
Equipment		$ 72
Investment recorded		14	$ 48
Loss on disposal		$ 58

Revenue (Schedule of Contract Assets) (Details) $ in Thousands	9 Months Ended
	Dec. 31, 2019 USD ($)
Revenue [Abstract]
Balance	$ 436
Impairment	(436)
Balance

Related Party Transactions (Details) - USD ($)	3 Months Ended		9 Months Ended
Related Party Transactions (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019	Sep. 30, 2014
Related Party Transaction [Line Items]
Consulting fees	$ 1,404,000	$ 1,459,000	$ 4,393,000	$ 4,419,000
Contract liability	3,600,000		3,600,000		$ 4,200,000
Revenue recognized			600,000
Motorola [Member]
Related Party Transaction [Line Items]
Purchase of equipment	0	200,000	11,000	400,000
Revenue recognized	183,000	183,000	547,000	547,000
Consulting Firm [Member]
Related Party Transaction [Line Items]
Consulting fees		136,000	0	136,000
Payable to related parties					5,000
Equipment Supplier [Member]
Related Party Transaction [Line Items]
Payable to related parties	90,000		90,000		60,000
Spectrum [Member]
Related Party Transaction [Line Items]
Contract liability						$ 7,500,000
Revenue recognized	183,000	$ 183,000	$ 547,000	$ 547,000
Goosetown [Member]
Related Party Transaction [Line Items]
Recurring revenue term			2 years
TeamConnect LLC [Member]
Related Party Transaction [Line Items]
Service fee term			24 months
TeamConnect LLC [Member] \| PDVConnect [Member]
Related Party Transaction [Line Items]
Contract liability	16,000		$ 16,000		$ 118,000
Revenue recognized	$ 215,000		$ 729,000
Recurring revenue term			48 months

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Dec. 31, 2019	Jan. 31, 2020
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Registrant Name	Anterix Inc.
Entity Central Index Key	0001304492
Current Fiscal Year End Date	--03-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding		17,166,282

Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019	Apr. 01, 2019	Mar. 31, 2019
Summary Of Significant Accounting Policies [Line Items]
Gross patent costs							$ 572,000
Accumulated amortization							388,000
Transfer to Investments			$ 14,000
Contribution of patent to TeamConnect LLC			34,000
Amortization expense			10,000	$ 10,000
Impairment of long-lived assets	$ 33,000	$ 200,000	33,000	$ 730,000
Asset retirement obligation	$ 831,000		$ 831,000				328,000
Wireless licenses term			10 years
Lease term	10 years		10 years
Tax benefits attributed to share-based compensation expense			$ 0
Potentially dilutive securities outstanding but excluded from computation of earnings per share			1,396,000	1,386,000
Right of use assets, net	$ 6,841,000		$ 6,841,000			$ 7,100,000
Lease liability	$ 9,148,000		$ 9,148,000			9,400,000
Deferred rent liability						$ 2,300,000
Weighted average incremental borrowing rate	13.00%		13.00%			13.00%
Accounts payable and accrued expenses							200,000
Non-current other liabilities							$ 2,100,000
Property, Plant and Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment of long-lived assets			$ 22,000
Right Of Use Asset [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment of long-lived assets	$ 11,000		$ 11,000
Accounting Standards Update 2018-07 [Member]
Summary Of Significant Accounting Policies [Line Items]
Decrease to accumulated deficit						$ 188,000
TeamConnect LLC [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage	19.50%		19.50%		19.50%
Transfer to Investments	$ 174,000		$ 174,000
Contribution of patent to TeamConnect LLC			$ 34,000

Business Concentrations	9 Months Ended
Business Concentrations	Dec. 31, 2019
Business Concentrations [Abstract]
Business Concentrations	14.Business Concentrations For the three and nine months ended December 31, 2019, the Company had one domestic carrier and one reseller that accounted for approximately 23% of total operating revenues, respectively. For the three and nine months ended December 31, 2018, the Company had one domestic carrier that accounted for approximately 21% and 28% of operating revenues, respectively. As of December 31, 2019, the Company had one domestic carrier and one reseller that accounted for approximately 87% of total accounts receivable. As of March 31, 2019, the Company had one domestic carrier that accounted for approximately 31% of accounts receivable.

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019
Consolidated Balance Sheets [Abstract]
Allowance for doubtful accounts	$ 15	$ 77
Preferred Stock, par value	$ 0.0001	$ 0.0001
Preferred Stock, shares authorized	10,000,000	10,000,000
Preferred Stock, shares outstanding	0	0
Common Stock, par value	$ 0.0001	$ 0.0001
Common Stock, shares authorized	100,000,000	100,000,000
Common Stock, shares issued	17,146,680	14,739,145
Common Stock, shares outstanding	17,146,680	14,739,145

Nature of Operations

9 Months Ended

Dec. 31, 2019

Nature of Operations [Abstract]

Nature of Operations

Anterix Inc. (formerly known as pdvWireless, Inc., the “Company”) is a wireless communications company focused on empowering the modernization of critical infrastructure and enterprise business communications by enabling broadband connectivity. The Company’s foundational spectrum provides the ability to transform its customers’ operations to meet new business complexities while achieving higher levels of performance and safety. The Company is the largest holder of licensed spectrum in the 900 MHz band (896-901/935-940 MHz) with nationwide coverage throughout the contiguous United States, Hawaii, Alaska and Puerto Rico. On average, the Company holds approximately 60% of the channels in the 900 MHz band in the top 20 metropolitan market areas in the United States. The Company is currently pursuing a regulatory proceeding at the Federal Communications Commission (the “FCC”) that seeks to modernize and realign the 900 MHz band by allowing it to be utilized for the deployment of broadband networks, technologies and solutions.

The Company was originally incorporated in California in 1997 and reincorporated in Delaware in 2014. In November 2015, the Company changed its name from Pacific DataVision, Inc. to pdvWireless, Inc. On August 6, 2019, the Company changed its name from pdvWireless, Inc. to Anterix Inc. The Company maintains offices in Woodland Park, New Jersey and McLean, Virginia.

Historically, the Company generated revenue principally from its pdvConnect and TeamConnect businesses. pdvConnect is a mobile communication and workforce management solution. The Company historically marketed pdvConnect primarily through two Tier 1 carriers in the United States. In Fiscal 2016, it began offering a commercial push-to-talk (“PTT”) service, which was marketed as TeamConnect, in seven major metropolitan areas throughout the United States, including Atlanta, Baltimore/Washington, Chicago, Dallas, Houston, New York and Philadelphia. It primarily offered the TeamConnect service to customers indirectly through third-party sales representatives who were primarily selected from Motorola’s nationwide dealer network.

In June 2018, the Company announced its plan to restructure its business to align and focus its business priorities on its spectrum initiatives aimed at modernizing and realigning the 900 MHz band to increase its usability and capacity, including for the future deployment of broadband and other advanced technologies and services. In December 2018, the Company’s board of directors approved the transfer of the Company’s TeamConnect business and support for its pdvConnect business.

In July 2019, the Company completed a registered follow-on offering in which it sold 2,222,223 shares of its common stock at a purchase price to the public of $45.00 per share. Net proceeds were approximately $94.2 million after deducting $5.5 million in underwriting discounts and commissions, and $0.3 million in offering expenses.

Intangible Assets (Schedule of Indefinite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2019
Indefinite-lived Intangible Assets [Line Items]
Balance		$ 107,548
Acquisitions	$ 800
Balance	108,335	108,335
Wireless Licenses [Member]
Indefinite-lived Intangible Assets [Line Items]
Balance		107,548
Acquisitions		792
Reclassed to property and equipment		(5)
Balance	$ 108,335	$ 108,335

Intangible Assets (Tables)

9 Months Ended

Dec. 31, 2019

Intangible Assets [Abstract]

Schedule of Indefinite-Lived Intangible Assets


	Wireless Licenses
Balance at March 31, 2019	$	107,548
Acquisitions		792
Reclassed to property and equipment		(5)
Balance at December 31, 2019	$	108,335

Revenue (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Revenue (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019	Sep. 30, 2014
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue recognized			$ 600
Contract liability	$ 3,600		3,600		$ 4,200
Cost of Revenue [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract and contract acquisition costs			258
Sales [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract and contract acquisition costs			178
Spectrum [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue recognized	$ 183	$ 183	$ 547	$ 547
Contract liability						$ 7,500
Contractual term	10 years		10 years
Goosetown [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Recurring revenue	20.00%		20.00%
Recurring revenue term			2 years
TeamConnect LLC [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Service fee term			24 months
Goosetown And A BEEP [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Service transition period			2 years
Purchased Customers [Member] \| Minimum [Member] \| Goosetown And A BEEP [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Recurring revenue	20.00%		20.00%
Purchased Customers [Member] \| Maximum [Member] \| Goosetown And A BEEP [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Recurring revenue	100.00%		100.00%
Diga-Talk Plus [Member] \| A BEEP [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Recurring revenue term			2 years
Diga-Talk Plus [Member] \| Minimum [Member] \| A BEEP [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Recurring revenue	35.00%		35.00%
Diga-Talk Plus [Member] \| Maximum [Member] \| A BEEP [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Recurring revenue	15.00%		15.00%

Stock Acquisition Rights, Stock Options and Warrants

9 Months Ended

Dec. 31, 2019

Stock Acquisition Rights, Stock Options and Warrants [Abstract]

Stock Acquisition Rights, Stock Options and Warrants

11.Stock Acquisition Rights, Stock Options and Warrants

The Company established the 2014 Stock Plan (the “2014 Stock Plan”) to attract, retain and reward individuals who contribute to the achievement of the Company’s goals and objectives. This 2014 Stock Plan superseded previous stock plans although under such previous plans, 23,550 stock option shares were outstanding and vested as of December 31, 2019.

The Company’s board of directors has reserved 3,805,223 shares of common stock for issuance under its 2014 Stock Plan as of December 31, 2019, of which 801,273 shares are available for future issuance. The number of shares will continue to automatically increase each January 1 through January 1, 2024 by an amount equal to the lesser of (i) 5% of the number of shares of common stock issued and outstanding on the immediately preceding December 31 or (ii) a lesser amount determined by the board of directors. Effective January 1, 2020, the board of directors elected to increase the shares authorized under the 2014 Stock Plan by 342,762 shares which represented 2% of the of the common stock issued and outstanding as of December 31, 2019.

Restricted Stock and Restricted Stock Units

A summary of non-vested restricted stock activity for the nine months ended December 31, 2019 is as follows:



		Weighted
		Average
	Restricted	Grant Day
	Stock	Fair Value
Non-vested restricted stock outstanding at March 31, 2019	279,212	$	28.71
Granted	175,068		42.10
Forfeited	(2,163)		(22.85)
Vested	(99,533)		(28.51)
Non-vested restricted stock outstanding at December 31, 2019	352,584	$	35.45

The Company recognizes compensation expense for restricted stock on a straight-line basis over the explicit vesting period. Vested restricted stock units are settled and issuable upon the earlier of the date the employee ceases to be an employee of the Company or a date certain in the future. Stock compensation expense related to restricted stock was approximately $1.1 million and $3.1 million for the three and nine months ended December 31, 2019, respectively. Stock compensation expense related to restricted stock was approximately $0.7 million and $3.4 million for the three and nine months ended December 31, 2018, respectively, which included $1.4 million of expense related to the modification of restricted stock held by the Company’s former chief executive officer and president and several other key employees which were accounted for in restructuring costs.

Stock compensation expense for restricted stock is accounted for in general and administrative expense in the Company’s Consolidated Statement of Operations. At December 31, 2019, there was $9.8 million of unvested compensation expense for restricted stock, which is expected to be recognized over a weighted average period of 2.95 years.

Performance Stock Units

During the three and nine months ended December 31, 2019, the Company awarded 11,307 performance stock units under the 2014 Stock Plan. Outstanding performance stock units represent the number of shares of the Company’s common stock that the recipient would receive upon the Company’s attainment of the applicable performance goals. The performance goals are: prior to January 13, 2020, (A) issuance of a Final Order from the FCC providing for the creation and allocation of licenses for spectrum in the 900 MHz band consisting of paired blocks of contiguous spectrum, each containing at least 3 MHz of contiguous spectrum, authorized for broadband wireless communications uses and (B) the lack of objection by the Company's board of directors to the terms and conditions (including, but not limited to, the rebanding, clearing and relocation procedures, license assignment and award mechanisms, and technical and operational rules) set forth or referenced in the Final Order. These awards do not forfeit.

A summary of the performance stock unit activity for the nine months ended December 31, 2019 is as follows:



		Weighted
		Average
	Performance	Grant Day
	Stock	Fair Value
Performance stock outstanding at March 31, 2019	109,138	$	23.80
Granted	11,307		38.67
Forfeited	—		—
Vested	—		—
Performance stock outstanding at December 31, 2019	120,445	$	25.19

For the three and nine months ended December 31, 2019 and 2018, there was no stock compensation expense recognized for the performance units. At December 31, 2019, there was approximately $3.0 million of unvested compensation expense related to the outstanding performance stock units.

Stock Options

A summary of stock option activity for the nine months ended December 31, 2019 is as follows:



	Options	Weighted Average Exercise Price
Options outstanding at March 31, 2019	1,923,634	$	23.64
Options granted	—		—
Options exercised	(97,323)		(21.78)
Options forfeited/expired	(10,875)		(48.23)
Options outstanding at December 31, 2019	1,815,436	$	23.54

There were no options granted for the three and nine months ended December 31, 2019.

Performance Stock Options

A summary of the performance stock options as of December 31, 2019 is as follows:



	Performance Options	Weighted Average Exercise Price
Performance Options outstanding at March 31, 2019	179,945	$	25.83
Performance Options granted	—		—
Performance Options exercised	—		—
Performance Options forfeited/expired	—		—
Performance Options outstanding at December 31, 2019	179,945	$	25.83

The performance options will vest in full immediately upon attainment of the performance goals. The performance goals are: prior to January 13, 2020, (A) issuance of a Final Order from the FCC providing for the creation and allocation of licenses for spectrum in the 900 MHz band consisting of paired blocks of contiguous spectrum, each containing at least 3 MHz of contiguous spectrum, authorized for broadband wireless communications uses and (B) the lack of objection by the Company's Board of Directors to the terms and conditions (including, but not limited to, the rebanding, clearing and relocation procedures, license assignment and award mechanisms, and technical and operational rules) set forth or referenced in the Final Order.

Stock compensation expense related to the amortization of the fair value of stock options (other than the performance stock options) issued was approximately $0.3 million and $1.3 million for the three and nine months ended December 31, 2019. For the three and nine months ended December 31, 2018, the comparable stock compensation expense was approximately $0.7 million and $5.6 million, respectively, which included $1.1 million of expense related to the consulting and transition agreements and $2.1 million of expense related to the modification of option grants held by the Company’s former chief executive officer and president. The stock compensation expense is included in general and administrative expense in the accompanying Consolidated Statement of Operations.

As of December 31, 2019, there was approximately $2.8 million of unrecognized compensation cost related to non-vested stock options granted under the Company’s stock option plans, of which $2.0 million pertains to the non-performance based stock options which is expected to be recognized over a weighted-average period of 2 years.

Motorola Investment

On September 15, 2014, Motorola invested $10.0 million to purchase 500,000 Class B Units of the Company’s subsidiary, PDV Spectrum Holding Company, LLC (at a price equal to $20.00 per unit). The Company owns 100% of the Class A Units in this subsidiary. Motorola has the right at any time to convert its 500,000 Class B Units into 500,000 shares of the Company’s common stock. The Company also has the right to force Motorola’s conversion of these Class B Units into shares of its common stock at its election. Motorola is not entitled to any assets, profits or distributions from the operations of the subsidiary. In addition, Motorola’s conversion ratio from Class B Units to shares of the Company’s common stock is fixed on a one-for-one basis, and is not dependent on the performance or valuation of either the Company or the subsidiary. The Class B Units have no redemption or call provisions and can only be converted into shares of the Company’s common stock. Management has determined that this investment does not meet the criteria for temporary equity or non-controlling interest due to the limited rights that Motorola has as a holder of Class B Units, and accordingly has presented this investment as part of its permanent equity within Additional Paid-in Capital in the accompanying consolidated financial statements.

Equity Method Investment (Tables)

9 Months Ended

Dec. 31, 2019

Equity Method Investment [Abstract]

Equity Method Investment


	Equity Method Investment
Equity method investment carrying value at March 31, 2019	$	—
Contribution		48
Share of net loss from LLC		(8)
Equity method investment carrying value at December 31, 2019	$	40

Income Taxes	9 Months Ended
Income Taxes	Dec. 31, 2019
Income Taxes [Abstract]
Income Taxes	10.Income Taxes On December 22, 2017, new federal tax provisions under the Tax Cuts and Jobs Act of 2017 (“TCJA”) were signed into law. The TCJA includes numerous changes to existing corporate income tax laws. These changes include, among others, a permanent reduction in the federal corporate income tax rate from the highest marginal rate of 35% to a fixed rate of 21%, effective as of January 1, 2018, and a provision that federal net operating losses (“NOLs”) incurred in tax years ending after December 31, 2017 may be carried forward indefinitely. As a result, the Company may now consider indefinite lived assets and the associated deferred tax liability as a source of future taxable income when assessing the potential to realize future tax deductions from indefinite carryforwards of NOLs and interest expense. As of March 31, 2018, the Company had federal and state NOL carryforwards of approximately $125.7 million and $51.3 million, respectively, expiring in various amounts from 2019 through 2037, to offset future taxable income. Per the TCJA, federal and TCJA-adhering state NOLs of approximately $34.1 million and $4.4 million, respectively, generated in fiscal year ended March 31, 2018 can be carried forward indefinitely and are not subject to the 80% of taxable income NOL deduction limitation. As of March 31, 2019, the Company had federal and state NOL carryforwards of approximately $164.0 million and $74.0 million, respectively, expiring in various amounts from 2020 through 2037, to offset future taxable income. Federal and state NOLs of approximately $72.6 million and $10.3 million, respectively, can be carried forward indefinitely but a portion of federal and state NOLs of approximately $38.5 million and $6.0 million, respectively, is limited to 80% of future taxable income when used. For the nine months ended December 31, 2019, the Company incurred federal and state operating losses of approximately $28.6 million and $17.0 million, respectively, to offset future taxable income, of which $33.0 million can be carried forward indefinitely, but can only offset 80% of taxable income when used. The Company used a discrete effective tax rate method to calculate taxes for the three- and nine-month ended December 31, 2019. The Company determined that applying an estimate of the annual effective tax rate would not provide a reasonable estimate as small changes in estimated “ordinary” loss would result in significant changes in the estimated annual effective tax rate. Accordingly, for the nine months ending December 31, 2019, the Company recorded a total deferred tax expense of $594,000 due to the inability to use some portion of federal and state NOL carryforwards against the deferred tax liability created by the amortization of indefinite-lived intangibles.

Summary of Significant Accounting Policies (Tables)

9 Months Ended

Dec. 31, 2019

Summary of Significant Accounting Policies [Abstract]

Summary of Changes in Liability For Asset Retirement Obligations


	Asset Retirement Obligations
Balance at March 31, 2019	$	328
Revision of estimate		503
Accretion expense		—
Balance at December 31, 2019		831
Less amount classified as current – included in accounts payable and accrued expenses		164
Noncurrent liabilities - included in other liabilities	$	667

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Operating revenues
Operating revenues	$ 361	$ 1,502	$ 1,237	$ 5,199
Operating expenses
Direct cost of revenue (exclusive of depreciation and amortization)	631	974	2,248	3,599
General and administrative	4,740	5,216	14,145	14,310
Sales and support	949	620	2,922	3,110
Product development	610	647	1,846	1,846
Depreciation and amortization	1,135	695	2,412	2,140
Stock compensation expense (exclusive of restructuring related costs)	1,404	1,459	4,393	4,419
Restructuring costs	35	418	195	8,540
Impairment of long-lived assets	33	200	33	730
Total operating expenses	9,537	10,229	28,194	38,694
Loss from operations	(9,176)	(8,727)	(26,957)	(33,495)
Interest income	517	393	1,505	1,079
Other income (expenses)	2	(16)	154	(16)
Loss on equity method investment	(23)		(8)
Loss before income taxes	(8,680)	(8,350)	(25,306)	(32,432)
Income tax expense	131		594
Net loss	$ (8,811)	$ (8,350)	$ (25,900)	$ (32,432)
Net loss per common share basic and diluted	$ (0.52)	$ (0.57)	$ (1.60)	$ (2.23)
Weighted-average common shares used to compute basic and diluted net loss per share	17,093,133	14,614,793	16,167,845	14,539,377
Service [Member]
Operating revenues
Operating revenues	$ 178	$ 1,155	$ 690	$ 3,798
Spectrum [Member]
Operating revenues
Operating revenues	$ 183	183	$ 547	547
Other Revenue [Member]
Operating revenues
Operating revenues		$ 164		$ 854

Concentrations of Credit Risk	9 Months Ended
Concentrations of Credit Risk	Dec. 31, 2019
Concentrations of Credit Risk [Abstract]
Concentrations of Credit Risk	13.Concentrations of Credit Risk Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash and cash equivalents and trade accounts receivable. The Company places its cash and temporary cash investments with financial institutions for which credit loss is not anticipated. As of December 31, 2019, the Company sells its pdvConnect product and extends credit predominately to one third-party carrier. The Company maintains allowances for doubtful accounts based on factors surrounding the write-off history, historical trends, and other information.

Leases (Tables)

9 Months Ended

Dec. 31, 2019

Leases [Abstract]

Lease Cost


	Three Months Ended		Nine Months Ended
	December 31, 2019		December 31, 2019
Lease cost
Operating lease cost (cost resulting from lease payments)	$	662	$	1,952
Short term lease cost		10		42
Sublease income		(4)		(13)
Net lease cost	$	668	$	1,981

Supplemental Lease Information


	Nine Months Ended
	December 31, 2019
Operating lease - operating cash flows (fixed payments)	$	2,012
Operating lease - operating cash flows (liability reduction)	$	1,044
Right of use assets obtained in exchange for new operating lease liabilities	$	7,904
Non-current assets - right of use assets, net	$	6,841
Current liabilities - operating lease liabilities	$	1,706
Non-current liabilities - operating lease liabilities	$	7,442

Future Minimum Payments


		Operating
Fiscal Year		Leases
2020 (excluding the nine months ended December 31, 2019)	$	710
2021		2,670
2022		2,265
2023		2,098
2024		1,893
After 2024		3,061
Total future minimum lease payments		12,697
Amount representing interest		(3,549)
Present value of net future minimum lease payments	$	9,148

Revenue

9 Months Ended

Dec. 31, 2019

Revenue [Abstract]

Revenue

3.Revenue

On April 1, 2018, the Company adopted ASC 606 using the modified retrospective method and recognized the cumulative effect of initially applying the guidance as an adjustment to the opening balance of retained deficit. The Company applied the new revenue standard to new and existing contracts that were not complete as of the date of initial application. As a result of applying this standard using the modified retrospective method, the Company has presented financial results and applied its accounting policies for the period beginning April 1, 2018 under ASC 606, while prior period results and accounting policies have not been adjusted and are reflected under legacy GAAP pursuant to Accounting Standard Codification 605.

In December 2018, the Company’s board of directors approved the transfer of its TeamConnect business and support for its pdvConnect business to help reduce operating costs and to allow the management team and the Company to focus on its FCC initiatives and future broadband opportunities. Specifically, the Company entered into: (i) a Customer Acquisition and Resale Agreement with A BEEP LLC (“A BEEP”) on January 2, 2019, (ii) a Customer Acquisition, Resale and Licensing Agreement with Goosetown Enterprises, Inc. (“Goosetown”) on January 2, 2019 and (iii) a memorandum of understanding (“MOU”) with the principals of Goosetown on December 31, 2018. Under the A BEEP and Goosetown Agreements, the Company agreed to: (i) transfer its TeamConnect customers located in the Atlanta, Chicago, Dallas, Houston and Phoenix metropolitan markets to A BEEP, (ii) transfer its TeamConnect customers located in the Baltimore/Washington DC, Philadelphia and New York metropolitan markets to Goosetown, (iii) provide A BEEP and Goosetown with access to the TeamConnect Metro and Campus Systems (the, “MotoTRBO Systems ”) and (iv) grant A BEEP and Goosetown the right to resell access to the MotoTRBO Systems pursuant to separate Mobile Virtual Network Operation arrangements for a two-year period. The Company also granted Goosetown a license to sell the business applications the Company developed for its TeamConnect service. On March 31, 2019, the agreements were amended to formally set the transition date for the businesses as April 1, 2019 and to clarify the responsibilities between the parties.

Under these agreements, A BEEP and Goosetown agreed to provide customer care, billing and collection services for their respective acquired customers. The Company continued to provide these services through April 1, 2019 to help facilitate the transitioning of the acquired customers. Additionally, the Company is required to maintain and pay all site lease, backhaul and utility costs required to operate the MotoTRBO Systems for a two-year period. As part of the Company’s efforts to clear the 900 MHz spectrum for broadband use, A BEEP and Goosetown are required to migrate the acquired customers off the MotoTRBO Systems over the two-year period. In consideration for the customers and rights the Company transferred, A BEEP and Goosetown are required to pay a certain portion of the recurring revenues they receive from the acquired customers ranging from 100% to 20% during the terms of the agreements. Additionally, A BEEP is required to pay the Company a portion of recurring revenue from customers who utilize A BEEP’s push-to-talk Diga-talk Plus application service ranging from 35% to 15% for a period of two years. Goosetown is required to pay the Company 20% of recurring revenues from the TeamConnect applications it licensed for a period of two years.

Service Revenue. The Company has historically derived its service revenue from a fixed monthly recurring unit price per user, with 30-day payment terms, for the pdvConnect, TeamConnect and Diga-talk service offerings.

pdvConnect is a proprietary cloud-based mobile resource management solution which has historically been sold as a separate software-as-a-service offering for dispatch-centric business customers who utilize Tier 1 cellular networks, and to a lesser extent, who utilize land mobile radio networks not operated by the Company. pdvConnect was historically sold directly by the Company or through two Tier 1 domestic carriers. The service is contracted and billed on a month-to-month basis, and the Company satisfies its performance obligation over time as the services are delivered.

TeamConnect combines pdvConnect with push-to-talk (“PTT”) mobile communication services involving digital network architecture and mobile devices. The contract period for the TeamConnect service varies from a month-to-month basis to 24 months. The customer is billed at the beginning of each month of the contract term. The Company recognizes revenue as it satisfies its performance obligation over time as the services are delivered. On April 1, 2019, these customers were transitioned to A BEEP and Goosetown. A BEEP and Goosetown agreed to pay the Company a certain portion of the recurring revenues during the term of the agreements. While the customer remains on the Company’s MotoTRBO Systems, the portion of recurring revenues paid by A BEEP and Goosetown is recorded as revenue.

Diga-talk is a mobile communications offering that was being resold by the Company for the three and nine months ended December 31, 2018. The service was contracted and billed on a month-to-month basis. The determination was made that the Company was the principal in this reseller arrangement since the customer viewed the Company as fulfilling the performance obligations and therefore, recorded revenue on a gross basis over time upon delivery of the services. On April 1, 2019, these customers were transferred to A BEEP and the Company no longer has revenue for this offering.

Spectrum Revenue. In September 2014, Motorola paid the Company an upfront, fully-paid fee of $7.5 million in order to use a portion of the Company’s wireless spectrum licenses. The payment of the fee is accounted for as deferred revenue on the Company’s consolidated balance sheets and is recognized ratably as the service is provided over the contractual term of approximately ten years. The revenue recognized for the three and nine months ended December 31, 2019 and 2018 were approximately $183,000 and $547,000, respectively.

Other Revenue. The Company historically derived other revenue primarily from either the sale of radios and accessories for TeamConnect and Diga-talk as well as the rental of radios for TeamConnect based on 30-day payment terms. The Company recognized radio and accessory revenue when a customer takes possession of the device. As of April 1, 2019 and the transition of customers to A BEEP and Goosetown, the Company no longer sells radios and accessories nor rents radios for TeamConnect.

Contract Assets. Contract assets includes the portion of the Company’s future service invoices which has been allocated to the discounted price of the radios and amortized as a reduction against service revenue over the contract period.

The Company also recognized a contract asset for the incremental costs of obtaining a contract with a customer. These costs include commissions for sales people and commissions paid to third-party dealers. These costs are amortized ratably using the portfolio approach over the estimated customer contract period. The Company reviews the contract asset on a periodic basis to determine if an impairment exists. If it is determined that there was an impairment, the contract asset will be expensed. Under the previous accounting standard, the Company expensed commissions as incurred.

As a result of the customers being transferred to A BEEP and Goosetown, all contract and contract acquisition costs were impaired. The Company increased direct cost of revenue amounting to $178,000 for the nine months ended December 31, 2019, and sales and support expense amounting to $258,000 for the nine months ended December 31, 2019.

The following table presents the activity for the Company’s contract assets (in thousands):


	Contract Assets
Balance at March 31, 2019	$	436
Impairment		(436)
Balance at December 31, 2019	$	—

Contract liabilities. Contract liabilities primarily relate to advance consideration received from customers for spectrum services, for which revenue is recognized over time, as the services are performed. These contract liabilities are recorded as deferred revenue on the balance sheet. The related liability as of March 31, 2019 of $4.2 million has been reduced by revenue recognized in the nine months ended December 31, 2019 of $0.6 million leaving a remaining liability of $3.6 million as of December 31, 2019.

Intangible Assets

9 Months Ended

Dec. 31, 2019

Intangible Assets [Abstract]

Intangible Assets

5.Intangible Assets

Wireless licenses are considered indefinite-lived intangible assets. Indefinite-lived intangible assets are not subject to amortization but instead are tested for impairment annually, or more frequently if an event indicates that the asset might be impaired. There were no impairment charges related to the Company’s indefinite-lived intangible assets during the three and nine months ended December 31, 2019 and 2018.

During the nine months ended December 31, 2019, the Company entered into an agreement with a third party to acquire wireless licenses for cash consideration of $0.8 million, upon FCC approval.

Intangible assets consist of the following at December 31, 2019 and March 31, 2019 (in thousands):


	Wireless Licenses
Balance at March 31, 2019	$	107,548
Acquisitions		792
Reclassed to property and equipment		(5)
Balance at December 31, 2019	$	108,335

Leases (Lease Cost) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Leases (Lease Cost) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2019
Lease, Cost [Abstract]
Operating lease cost (cost resulting from lease payments)	$ 662	$ 1,952
Short term lease cost	10	42
Sublease income	(4)	(13)
Net lease cost	$ 668	$ 1,981

Stock Acquisition Rights, Stock Options and Warrants (Tables)

9 Months Ended

Dec. 31, 2019

Stock Acquisition Rights, Stock Options and Warrants [Abstract]

Summary of Restricted Stock and Restricted Stock Units Activity



		Weighted
		Average
	Restricted	Grant Day
	Stock	Fair Value
Non-vested restricted stock outstanding at March 31, 2019	279,212	$	28.71
Granted	175,068		42.10
Forfeited	(2,163)		(22.85)
Vested	(99,533)		(28.51)
Non-vested restricted stock outstanding at December 31, 2019	352,584	$	35.45

Summary of Performance Stock Activity



		Weighted
		Average
	Performance	Grant Day
	Stock	Fair Value
Performance stock outstanding at March 31, 2019	109,138	$	23.80
Granted	11,307		38.67
Forfeited	—		—
Vested	—		—
Performance stock outstanding at December 31, 2019	120,445	$	25.19

Summary of Stock Option Activity



	Options	Weighted Average Exercise Price
Options outstanding at March 31, 2019	1,923,634	$	23.64
Options granted	—		—
Options exercised	(97,323)		(21.78)
Options forfeited/expired	(10,875)		(48.23)
Options outstanding at December 31, 2019	1,815,436	$	23.54

Summary of Performance Stock Options



	Performance Options	Weighted Average Exercise Price
Performance Options outstanding at March 31, 2019	179,945	$	25.83
Performance Options granted	—		—
Performance Options exercised	—		—
Performance Options forfeited/expired	—		—
Performance Options outstanding at December 31, 2019	179,945	$	25.83

Impairment and Restructuring Charges (Tables)

9 Months Ended

Dec. 31, 2019

Restructuring Cost and Reserve [Line Items]

Schedule of Accrued Restructuring Charges


	Restructuring Activities
Balance at March 31, 2019	$	2,655
Cash payments		(1,577)
Balance at December 31, 2019 (classified as current liabilities - restructuring reserve)	$	1,078

Cost-Reduction Actions [Member]

Restructuring Cost and Reserve [Line Items]

Schedule of Accrued Restructuring Charges


	Restructuring Activities
Balance at March 31, 2019	$	679
Severance costs		206
Facility exit		(28)
Cash payments		(699)
Balance at December 31, 2019		158
Less amount classified as current liabilities - restructuring reserve		101
Noncurrent liabilities - included in other liabilities	$	57

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (25,900)	$ (32,432)
Adjustments to reconcile net loss to net cash used by operating activities
Depreciation and amortization	2,412	2,140
Non-cash compensation expense attributable to stock awards	4,393	8,936
Deferred income taxes	594
Bad debt expense	45	280
Loss on disposal of assets	75	31
Loss on disposal of capitalized patent costs	140
Impairment of long-lived assets	33	730
Equity method investment	8
Changes in operating assets and liabilities
Accounts receivable	439	72
Inventory		173
Prepaid expenses and other assets	(176)	(530)
Right of use assets	1,063
Accounts payable and accrued expenses	(511)	354
Restructuring reserve	(2,098)	3,305
Due to related parties	(77)	347
Operating lease liabilities	(1,044)
Deferred revenue	(595)	(611)
Other liabilities	(72)	245
Net cash used by operating activities	(21,271)	(16,960)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of intangible assets	(792)	(937)
Purchases of equipment	(413)	(497)
Net cash used by investing activities	(1,205)	(1,434)
CASH FLOWS FROM FINANCING ACTIVITIES
Net proceeds from July 2019 follow-on offering	94,244
Proceeds from stock option exercises	2,220	2,564
Payments of withholding tax on net issuance of restricted stock	(467)	(139)
Net cash provided by financing activities	95,997	2,425
Net change in cash and cash equivalents	73,521	(15,969)
CASH AND CASH EQUIVALENTS
Beginning of the year	76,722	98,318
End of the year	150,243	82,349
Cash paid during the period:
Taxes paid	25	$ 12
Non-cash investing activity:
Capitalized change in estimated asset retirement obligations	503
Contribution of capital equipment to TeamConnect LLC	14
Contribution of patent to TeamConnect LLC	$ 34

Equity Method Investment (Equity Method Investment) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Share of net loss from LLC	$ (23)		$ (8)
Equity method investment carrying value	40		40
TeamConnect LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment carrying value
Contribution		$ 14	48
Share of net loss from LLC			(8)
Equity method investment carrying value	$ 40		$ 40

Summary of Significant Accounting Policies (Summary of Changes in Liability For Asset Retirement Obligations) (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2019
Summary of Significant Accounting Policies [Abstract]
Balance	$ 328
Revision of estimate	503
Balance	831
Asset Retirement Obligation [Abstract]
Asset retirement obligationsl	$ 328	$ 831
Less amount classified as current – included in accounts payable and accrued expenses		164
Noncurrent liabilities - included in other liabilities		$ 667

Impairment and Restructuring Charges (Narrative) (Details)			1 Months Ended	3 Months Ended		9 Months Ended		21 Months Ended
	Dec. 31, 2018 USD ($) employee	Jun. 01, 2018 employee	Aug. 31, 2018 employee	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Impairment of long-lived assets				$ 33,000	$ 200,000	$ 33,000	$ 730,000
Property and equipment, net				8,088,000		8,088,000				$ 9,830,000
Positions eliminated \| employee		20	7
Percentage of positions eliminated		20.00%
Cost-Reduction Actions [Member]
Restructuring Cost and Reserve [Line Items]
Positions eliminated \| employee	20
Percentage of positions eliminated	30.00%
Severance costs				34,000		206,000
Facility exit costs						28,000
Forecast [Member] \| Cost-Reduction Actions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges incurred								$ 57,000
TeamConnect LLC [Member]
Restructuring Cost and Reserve [Line Items]
Property and equipment, net									$ 72,000
TeamConnect LLC [Member] \| Radios And Related Accessories [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of long-lived assets					200,000		700,000
Property and equipment, net	$ 0				$ 0		$ 0
Property, Plant and Equipment [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of long-lived assets						22,000
Right Of Use Asset [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of long-lived assets				11,000		11,000
Property and equipment, net				$ 0		$ 0

Property and Equipment (Components of Property and Equipment) (Details) - USD ($)	9 Months Ended
	Dec. 31, 2019	Mar. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 17,335,000	$ 17,499,000
Less accumulated depreciation	9,333,000	7,952,000
Property and equipment, net before construction work in progress	8,002,000	9,547,000
Construction in process	86,000	283,000
Property and equipment, net	8,088,000	9,830,000
Network Sites and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	16,187,000	15,954,000
Property and equipment, net	$ 0
Network Sites and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	5 years
Network Sites and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	10 years
Furniture and Fixtures and Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 291,000	1,026,000
Furniture and Fixtures and Other Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	2 years
Furniture and Fixtures and Other Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	5 years
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 143,000	140,000
Computer Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	5 years
Computer Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	7 years
Computer Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 480,000	28,000
Computer Software [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	1 year
Computer Software [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	7 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Estimated useful life	10 years
Property and equipment, gross	$ 234,000	$ 351,000

Stock Acquisition Rights, Stock Options and Warrants (Summary of Restricted Stock and Restricted Stock Units Activity) (Details) - Restricted Stock [Member]	9 Months Ended
	Dec. 31, 2019 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Outstanding \| shares	279,212
Stock, Granted \| shares	175,068
Stock, Forfeited \| shares	(2,163)
Stock, Vested \| shares	(99,533)
Stock Outstanding \| shares	352,584
Weighted Average Grant Date Fair Value, Stock Outstanding \| $ / shares	$ 28.71
Weighted Average Grant Date Fair Value, Stock, Granted \| $ / shares	42.10
Weighted Average Grant Date Fair Value, Stock, Forfeited \| $ / shares	(22.85)
Weighted Average Grant Date Fair Value, Stock, Vested \| $ / shares	(28.51)
Weighted Average Grant Date Fair Value, Stock Outstanding \| $ / shares	$ 35.45

Property and Equipment

9 Months Ended

Dec. 31, 2019

Property and Equipment [Abstract]

Property and Equipment

4.Property and Equipment

Property and equipment consists of the following at December 31, 2019 and March 31, 2019 (in thousands):



	Estimated	December 31,		March 31,
	useful life	2019		2019
Network sites and equipment	5-10 years	$	16,187	$	15,954
Furniture and fixture and other equipment	2-5 years		291		1,026
Computer equipment	5-7 years		143		140
Computer software	1-7 years		480		28
Leasehold improvements	Shorter of the lease term or 10 years		234		351
			17,335		17,499
Less accumulated depreciation			9,333		7,952
			8,002		9,547
Construction in process			86		283
Property and equipment, net		$	8,088	$	9,830

Depreciation expense for the three months ended December 31, 2019 and 2018 amounted to $1.1 million and $0.7 million, respectively. The depreciation expense for the nine months ended December 31, 2019 and 2018 amounted to $2.4 million and $2.1 million, respectively. During the three months ended December 31, 2019, the Company adjusted the estimated asset retirement obligations and useful life for its network sites, resulting in additional non-cash capitalized costs in network sites amounting to $0.5 million and depreciation expense of $0.5 million for the three and nine months ended December 31, 2019.

During the nine months ended December 31, 2018, the Company recorded a $0.7 million non-cash charge for long-lived asset impairment of its radio assets to reduce the carrying value to the estimated recoverable amount. During the three and nine months ended December 31, 2019, the Company recorded a $22,000 non-cash impairment charge for network sites and equipment to reduce the carrying values to zero.

Computer software includes software developed or obtained for internal use during the application development stage with an estimated useful life of 5 to 7 years. Leasehold improvements include certain allowances for tenant improvements related to the expansion of the Company’s corporate headquarters.

On September 30, 2019, the Company transferred network, computer and other equipment with a net book value of $72,000 used to support the pdvConnect application services in exchange for a 19.5% ownership interest to the LLC.

Intangible Assets (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
Intangible Assets (Narrative) (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Acquired Indefinite-lived Intangible Assets [Line Items]
impairment charges	$ 0	$ 0	$ 0	$ 0
Acquisitions	$ 800,000
Wireless Licenses [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Acquisitions			$ 792,000

Nature of Operations (Details) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended	9 Months Ended
	Jul. 31, 2019 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) item	Dec. 31, 2019 USD ($) item	Sep. 15, 2014 $ / shares
Conversion of Stock [Line Items]
Percentage of channels in its portion of the 900 MHz band			60.00%
Number of carriers \| item		2
Metropolitan market areas \| item			20
Sale of stock \| shares	2,222,223
Sale of stock, price per share \| $ / shares	$ 45.00
Net proceeds from July 2019 follow-on offering	$ 94,200		$ 94,244
Underwriting discounts	5,500
Offering expenses	$ 300
TeamConnect LLC [Member]
Conversion of Stock [Line Items]
Metropolitan market areas \| item			7
Investment recorded		$ 14	$ 48
PDV Spectrum Holding Company, LLC [Member] \| Common Class B Units [Member]
Conversion of Stock [Line Items]
Sale of stock, price per share \| $ / shares				$ 20.00

Equity Method Investment

9 Months Ended

Dec. 31, 2019

Equity Method Investment [Abstract]

Equity Method Investment

6.Equity Method Investment

In connection with the transfer of its TeamConnect business and support for its pdvConnect business, the Company entered into a memorandum of understanding (“MOU”) with the principals of Goosetown on December 31, 2018. Under the MOU, the Company agreed to assign the intellectual property rights to its pdvConnect application to the LLC, a new entity formed by the principals of Goosetown, in exchange for a 19.5% ownership interest in the LLC, effective April 30, 2019. The Goosetown principals have agreed to fund the future operations of the LLC, subject to certain limitations. The LLC has assumed the Company’s software support and maintenance obligations under the Goosetown and A BEEP Agreements. The LLC has also assumed customer care services related to the Company’s pdvConnect application. The Company provided transition services to the LLC through April 1, 2019 to facilitate an orderly transition of the customer care services.

As of September 30, 2019, the Company transferred network, computer and other equipment with a net book value of $72,000, and recorded an investment in the LLC amounting to $14,000 and loss on disposal of assets amounting to $58,000 relating to the transfer of the assets as of such date. As of December 31, 2019, the Company also completed the transfer of the intellectual property rights with a net book value of $174,000 to the LLC and recorded an investment in the LLC amounting to $34,000 and loss on disposal of capitalized patent costs amounting to $140,000 relating to the transfer of the intellectual property.

During the nine months ended December 31, 2019, the change in the carrying value of the investment in the LLC is summarized as follows (in thousands):


	Equity Method Investment
Equity method investment carrying value at March 31, 2019	$	—
Contribution		48
Share of net loss from LLC		(8)
Equity method investment carrying value at December 31, 2019	$	40

Impairment and Restructuring Charges (Schedule of Accrued Restructuring Charges) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Balance		$ 2,655
Cash payments		(1,577)
Balance	$ 1,078	1,078
Restructuring Reserve [Abstract]
Accrued restructuring charges	1,078	2,655	$ 1,078
Cost-Reduction Actions [Member]
Restructuring Reserve [Roll Forward]
Balance		679
Severance costs	34	206
Facility exit		(28)
Cash payments		(699)
Balance	158	158
Restructuring Reserve [Abstract]
Accrued restructuring charges	$ 158	$ 679	158
Less amount classified as current liabilities - restructuring reserve			101
Noncurrent liabilities - included in other liabilities			$ 57

Stock Acquisition Rights, Stock Options and Warrants (Summary of Performance Stock Options) (Details) - Performance Stock Options [Member]	9 Months Ended
	Dec. 31, 2019 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding \| shares	179,945
Options, Granted \| shares
Options, Exercised \| shares
Options, Forfeited/Expired \| shares
Options Outstanding \| shares	179,945
Weighted Average Exercise Price, Options outstanding \| $ / shares	$ 25.83
Weighted Average Exercise Price, Granted \| $ / shares
Weighted Average Exercise Price, Exercised \| $ / shares
Weighted Average Exercise Price, forfeited/expired \| $ / shares
Weighted Average Exercise Price, Options outstanding \| $ / shares	$ 25.83