0001304492-24-000103 | 10-Q | XBRL Viewer

Escrow Deposits	3 Months Ended
Escrow Deposits	Jun. 30, 2024
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Escrow Deposits	Escrow Deposits Escrow deposits are considered restricted cash as the deposits are restricted from use until the terms of the escrow agreement are met. Escrow deposits are classified as current assets on the Company’s Consolidated Balance Sheets. In connection with the Lower Colorado River Authority Agreement (the “LCRA Agreement”), the Company and Lower Colorado River Authority (“LCRA”) entered into an escrow agreement. Pursuant to the escrow agreement, the escrow funds shall be held and invested in a money market deposit account. All interest and other income earned shall be allocated to the Company, payable with the final distribution of the escrow funds. The escrow funds shall be distributed upon written request by both the Company and LCRA pursuant to the terms within the LCRA Agreement. In December 2023, the Company received $15.0 million, of which $7.5 million was deposited in an escrow account. As of June 30, 2024, the Company’s escrow deposit balance on the Consolidated Balance Sheets is $7.6 million.

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Pay vs Performance Disclosure
Net loss	$ (15,524)	$ (2,118)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

Net Income (Loss) Per Share of Common Stock - Narrative (Details) - shares	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	215,423	193,948

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Current assets
Cash and cash equivalents	$ 51,715	$ 60,578
Spectrum receivable	10,999	8,521
Prepaid expenses and other current assets	2,972	3,912
Total current assets	65,686	73,011
Escrow deposits	7,577	7,546
Property and equipment, net	1,836	2,062
Right of use assets, net	4,493	4,432
Intangible assets	219,776	216,743
Deferred broadband costs	20,458	19,772
Other assets	1,312	1,328
Total assets	321,138	324,894
Current liabilities
Accounts payable and accrued expenses	7,748	8,631
Operating lease liabilities	1,807	1,850
Contingent liability	1,000	1,000
Deferred revenue	5,968	6,470
Total current liabilities	16,523	17,951
Operating lease liabilities	3,453	3,446
Contingent liability	25,000	15,000
Deferred revenue	114,719	115,742
Deferred gain on sale of intangible assets	4,911	4,911
Deferred income tax	7,338	6,281
Other liabilities	411	531
Total liabilities	172,355	163,862
Commitments and contingencies
Stockholders’ equity
Preferred stock, $0.0001 par value per share, 10,000,000 shares authorized and no shares outstanding at June 30, 2024 and March 31, 2024	0	0
Common stock, $0.0001 par value per share, 100,000,000 shares authorized and 18,581,297 shares issued and outstanding at June 30, 2024 and 18,452,892 shares issued and outstanding at March 31, 2024	2	2
Additional paid-in capital	538,505	533,203
Accumulated deficit	(389,724)	(372,173)
Total stockholders’ equity	148,783	161,032
Total liabilities and stockholders’ equity	$ 321,138	$ 324,894

Nature of Operations and Basis of Presentation (Policies)	3 Months Ended
	Jun. 30, 2024
Accounting Policies [Abstract]
Basis of Presentation and Use of Estimates	Basis of Presentation and Use of Estimates The consolidated financial statements and accompanying notes are prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. 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 U.S. GAAP 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, 2024, filed with the SEC on June 26, 2024 (the “2024 Annual Report”). 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 and assumptions that affect the reported amounts. These 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. All significant intercompany accounts and transactions have been eliminated in consolidation.

Intangible Assets

3 Months Ended

Jun. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

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 months ended June 30, 2024 and 2023.

Intangible assets consist of the following activity for the three months ended June 30, 2024 and 2023 (in thousands):


	2024		2023
Balance at the beginning of period	$	216,743	$	202,044
Acquisitions and transfers	2,940		2,966

Exchanges - licenses received	126		13,292
Exchanges - licenses surrendered	(33)		(2,507)
Balance at the end of period	$	219,776	$	215,795

Purchases of intangible assets, including refundable deposits, retuning costs and swaps

During the three months ended June 30, 2024 and 2023, the Company entered into agreements with several third parties in multiple U.S. markets to acquire, retune or swap wireless licenses for cash consideration (“deals”) and made Anti-Windfall Payments to the US Treasury Department. The initial deposits to incumbents are recorded as spectrum receivable on the Company’s Consolidated Balance Sheets and are refundable if the FCC does not approve the sale, retuning or swap of the spectrum. The initial deposits are transferred to deferred broadband cost or intangible assets in the Company’s Consolidated Balance Sheets, as applicable, upon meeting the relevant deal milestones. The final payments related to closed retuning or swap deals are recorded as deferred broadband costs on the Company’s Consolidated Balance Sheets. The final payments for license purchases or Anti-Windfall Payments are recorded as intangible assets on the Company’s Consolidated Balance Sheets.

Broadband License Exchanges

During the three months ended June 30, 2024, the Company was granted by the FCC, a broadband license for 1 county. The Company recorded the new broadband license at its estimated accounting cost basis of approximately $0.1 million. In connection with receiving the broadband license, the Company disposed of a de minimis amount related to the value ascribed to the narrowband license it relinquished to the FCC for the same 1 county. The total carrying value of the narrowband license included the cost to acquire the original narrowband license, Anti-Windfall Payments paid to cover the shortfall in this county and the clearing costs. As a result of the exchange of the narrowband license for the broadband license, the Company recorded a gain on disposal of intangible assets of $0.1 million for the three months ended June 30, 2024.

During the three months ended June 30, 2023, the Company was granted by the FCC, broadband licenses for 9 counties. The Company recorded the new broadband licenses at their estimated accounting cost basis of approximately $13.3 million. In connection with receiving the broadband licenses, the Company disposed of $2.5 million, related to the value ascribed to the narrowband licenses it relinquished to the FCC for the same 9 counties. The total carrying value of narrowband licenses included the cost to acquire the original narrowband licenses, Anti-Windfall Payments paid to cover the shortfall in each county and the clearing costs. As a result of the exchange of narrowband licenses for broadband licenses, the Company recorded a gain on disposal of intangible assets of $10.8 million for the three months ended June 30, 2023.

Intangible Assets (Tables)

3 Months Ended

Jun. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Indefinite-Lived Intangible Assets

Intangible assets consist of the following activity for the three months ended June 30, 2024 and 2023 (in thousands):


	2024		2023
Balance at the beginning of period	$	216,743	$	202,044
Acquisitions and transfers	2,940		2,966

Exchanges - licenses received	126		13,292
Exchanges - licenses surrendered	(33)		(2,507)
Balance at the end of period	$	219,776	$	215,795

Nature of Operations and Basis of Presentation	3 Months Ended
Nature of Operations and Basis of Presentation	Jun. 30, 2024
Accounting Policies [Abstract]
Nature of Operations and Basis of Presentation	Nature of Operations and Basis of Presentation Anterix Inc (the “Company”) is the utility industry’s partner, empowering enhanced visibility, control and security for a modern grid. The Company’s vision is to deliver secure, scalable solutions enabled by private wireless broadband connectivity, for the benefit of utilities and the communities that they serve. As the largest holder of licensed spectrum in the 900 MHz band (896-901/935-940 MHz) throughout the contiguous United States, plus Hawaii, Alaska and Puerto Rico, the Company is uniquely positioned to deliver solutions that support secure, resilient and customer-controlled operations. The Company is focused on commercializing its spectrum assets and expanding the benefits and solutions it offers to enable the Company’s targeted utility and critical infrastructure customers to deploy private broadband networks. Business Developments In June 2024, the Company entered into a license purchase agreement with Oncor Electric Delivery Company LLC (“Oncor”) for total estimated consideration of $102.5 million under which Oncor will purchase 900 MHz spectrum licenses covering 95 counties to deploy a private wireless broadband network in its transmission and distribution service area (the “Oncor Agreement”).The total payment of $102.5 million comprises an initial payment of $10.0 million received in June 2024 and remaining payments that are due to the Company for each county, at closing. The timing and rights to milestone payments could vary as 900 MHz broadband licenses are granted by the FCC, broadband licenses are assigned to Oncor and incumbents are cleared by the Company. Oncor operates more than 143,000 circuit miles of transmission and distribution lines in Texas, delivering electricity to more than four million homes and businesses across a service territory that has an estimated population of approximately 13 million people. See Note 10 Contingencies and Guaranty for further discussion on the Oncor Agreement. Basis of Presentation and Use of Estimates The consolidated financial statements and accompanying notes are prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. 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 U.S. GAAP 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, 2024, filed with the SEC on June 26, 2024 (the “2024 Annual Report”). 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 and assumptions that affect the reported amounts. These 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. All significant intercompany accounts and transactions have been eliminated in consolidation.

Leases

3 Months Ended

Jun. 30, 2024

Leases [Abstract]

Leases

All 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 31, 2024 through January 31, 2029, which includes lease extensions for its corporate headquarters ranging from three to ten years. The Company entered into multiple lease agreements for tower space. The lease expiration dates range from November 30, 2024 to June 12, 2031.

Substantially all of the Company’s leases are classified as operating leases. Operating lease agreements are required to be recognized on the Company’s Consolidated Balance Sheets as right of use (“ROU”) assets and corresponding lease liabilities. 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.

Weighted-average remaining lease term and incremental borrowing rate for the Company’s operating leases are as follows:


	Three months ended June 30,
	2024	2023
Weighted average term - operating lease liabilities	3.66 years	2.77 years
Weighted average incremental borrowing rate - operating lease liabilities	9%	12%

Total lease cost amounted to approximately $0.5 million and $0.5 million, respectively, for the three months ended June 30, 2024 and 2023. Total lease cost is included in general and administrative expenses on the Company’s Consolidated Statements of Operations.

The following table presents total lease cost for the three months ended June 30, 2024 and 2023 (in thousands):


	Three months ended June 30,
	2024		2023
Lease cost
Operating lease cost	$	501	$	507


Total lease cost	$	501	$	507

The following table presents supplemental balance sheet information as of June 30, 2024 and March 31, 2024 (in thousands):


	June 30, 2024		March 31, 2024
Non-current assets - right of use assets, net	$	4,493	$	4,432
Current liabilities - operating lease liabilities	$	1,807	$	1,850
Non-current liabilities - operating lease liabilities	$	3,453	$	3,446

Future minimum payments under existing 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 three months ended June 30, 2024, are as follows (in thousands):


Fiscal Year	Operating Leases
2025 (excluding the three months ended June 30, 2024)	$	1,688
2026	1,562
2027	1,158
2028	815
2029	558
After 2029	249
Total future minimum lease payments	6,030
Amount representing interest	(770)
Present value of net future minimum lease payments	$	5,260

Stockholders’ Equity

3 Months Ended

Jun. 30, 2024

Equity [Abstract]

Stockholders’ Equity

On August 8, 2023 (the “Effective Date”), the Company adopted a new equity-based compensation plan known as the Anterix Inc. 2023 Stock Plan (the “2023 Stock Plan”). The 2023 Stock Plan permits the Company to grant equity compensation awards to employees, consultants and non-employee directors of the Company. As of the Effective Date, no additional awards may be granted under the Anterix Inc. 2014 Stock Plan (the “2014 Stock Plan”). The 2023 Stock Plan authorizes 250,000 shares of common stock of the Company (“Shares”) for grant. Additionally, 388,151 Shares remaining for grant under the 2014 Stock Plan immediately prior to the Effective Date, Shares subject to outstanding stock awards granted under the 2014 Stock Plan that, following the Effective Date, expire or are terminated or cancelled without having been exercised or settled in full, and Shares acquired pursuant to an award subject to forfeiture or repurchase that are forfeited or repurchased by the Company for an amount not greater than the recipient’s purchase price, are issuable under the 2023 Stock Plan. As of June 30, 2024, under the 2023 Stock Plan, 239,900 shares are available for future issuance of which up to 151,838 shares which may be granted upon meeting certain performance levels above 100% for performance stock unit awards.

During the three months ended June 30, 2024 and the year ended March 31, 2024, a total of 190,860 and 266,539 shares, respectively, were issued in connection with the vesting, conversion and or exercise of grants under the Company’s 2014 and 2023 Stock Plan.

Cumulative Spectrum Proceeds Monetized

The performance-based restricted units were to vest on a determination date of June 24, 2024 (“Determination Date”), based on the Cumulative Spectrum Proceeds Monetized (“CSPM”) metric over a four-year measurement period commencing on June 24, 2020, with 15,025 units vesting if the minimum CSPM level is achieved, 30,049 units vesting if the target CSPM metric is achieved and up to 60,098 vesting if the maximum CSPM metric is achieved. Due to the timing of the execution of the Oncor Agreement, the Company entered into an amendment agreement, effectively extending the Determination Date to June 27, 2024. The amendment resulted in 15,800 shares vesting based on the CSPM level achieved.

Share Repurchase Program

In September 2023, the Board authorized the 2023 Share Repurchase Program (the “2023 Share Repurchase Program”) pursuant to which the Company may repurchase up to $250.0 million of the Company’s common stock on or before September 21, 2026. The Company may repurchase shares of its common stock via the open market and/or privately negotiated transactions. Repurchases will be made in accordance with applicable securities laws and may be effected pursuant to Rule 10b5-1 trading plans. The manner, timing and amount of any share repurchases will be determined by the Company based on a variety of factors, including proceeds from customer contracts, the timing of which is unpredictable, as well as general business and market conditions, the Company’s capital position, and other strategic considerations. The 2023 Share Repurchase Program does not obligate the Company to repurchase any particular amount of its common stock.

The Inflation Reduction Act of 2022, which was enacted into law on August 16, 2022, imposed a nondeductible 1% excise tax on the net value of certain stock repurchases made after December 31, 2022. Excise tax accrued for the three months ended June 30, 2024 was approximately $0.1 million.

The following table presents the share repurchase activity for the three months ended June 30, 2024 and 2023 (in thousands, except per share data):


	Three months ended June 30,
	2024		2023

Number of shares repurchased and retired	63		—
Average price paid per share*	$	32.47	$	—
Total cost to repurchase	$	2,027	$	—

*Average price paid per share includes costs associated with the repurchases.

As of June 30, 2024, $234.0 million is remaining under the share repurchase program.

Cover - shares	3 Months Ended
Cover - shares	Jun. 30, 2024	Aug. 02, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	001-36827
Entity Registrant Name	Anterix Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	33-0745043
Entity Address, Address Line One	3 Garret Mountain Plaza
Entity Address, Address Line Two	Suite 401
Entity Address, City or Town	Woodland Park
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	07424
City Area Code	973
Local Phone Number	771-0300
Title of 12(b) Security	Common Stock, $0.0001 par value
Trading Symbol	ATEX
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		18,594,802
Entity Central Index Key	0001304492
Current Fiscal Year End Date	--03-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false

Consolidated Statements of Stockholders’ Equity - USD ($) $ in Thousands	Total	Common ‎stock	Additional ‎paid-in ‎capital	Accumulated ‎deficit
Beginning balance (in shares) at Mar. 31, 2023		18,922,000
Beginning balance at Mar. 31, 2023	$ 179,793	$ 2	$ 518,160	$ (338,369)
Stock compensation expense	4,265		4,265
Restricted shares issued (in shares)		148,000
Stock option exercises	7		7
Shares withheld for taxes (in shares)		(23,000)
Shares withheld for taxes	(752)		(752)
Net loss	(2,118)			(2,118)
Ending balance (in shares) at Jun. 30, 2023		19,047,000
Ending balance at Jun. 30, 2023	181,195	$ 2	521,680	(340,487)
Beginning balance (in shares) at Mar. 31, 2024		18,453,000
Beginning balance at Mar. 31, 2024	161,032	$ 2	533,203	(372,173)
Stock compensation expense	4,346		4,346
Restricted shares issued (in shares)		129,000
Stock option exercises (in shares)		81,000
Stock option exercises	1,617		1,617
Shares withheld for taxes (in shares)		(19,000)
Shares withheld for taxes	(661)		(661)
Retirement of common stock (in shares)		(63,000)
Retirement of common stock	(2,027)			(2,027)
Net loss	(15,524)			(15,524)
Ending balance (in shares) at Jun. 30, 2024		18,581,000
Ending balance at Jun. 30, 2024	$ 148,783	$ 2	$ 538,505	$ (389,724)

Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Spectrum revenue	$ 1,525	$ 608
Spectrum revenue \| Ameren Corporation
Disaggregation of Revenue [Line Items]
Spectrum revenue	156	152
Spectrum revenue \| Evergy
Disaggregation of Revenue [Line Items]
Spectrum revenue	386	274
Spectrum revenue \| Xcel Energy
Disaggregation of Revenue [Line Items]
Spectrum revenue	801	0
Spectrum revenue \| Motorola
Disaggregation of Revenue [Line Items]
Spectrum revenue	$ 182	$ 182

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Jun. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Escrow Deposits (Details) - USD ($) $ in Thousands	1 Months Ended
Escrow Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Increase in deposit assets	$ 7,500
Escrow deposits		$ 7,577	$ 7,546	$ 0	$ 0
Lower Colorado River Authority (LCRA) \| Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Initial payment received	$ 15,000

Revenue - Schedule of Contract Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Revenue from Contract with Customer [Roll Forward]
Beginning balance	$ 1,027	$ 870
Additions	26	28
Amortization	(30)	(10)
Ending balance	1,023	888
Capitalized Contract Cost, Net, Classified [Abstract]
Balance	1,023	888
Less amount classified as current assets	(586)	(445)
Noncurrent assets	$ 437	$ 443

Leases - Future Minimum Payments (Details) $ in Thousands	Jun. 30, 2024 USD ($)
Leases [Abstract]
2025 (excluding the three months ended June 30, 2024)	$ 1,688
2026	1,562
2027	1,158
2028	815
2029	558
After 2029	249
Total future minimum lease payments	6,030
Amount representing interest	(770)
Present value of net future minimum lease payments	$ 5,260

Stockholders’ Equity - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Jun. 24, 2020	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Aug. 08, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available (in shares)		239,900
Awards issued (in shares)		190,860	266,539
Stock repurchase program, authorized amount				$ 250,000
Excise taxes accrued		$ 100
Stock repurchase program, remaining repurchase amount		$ 234,000
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested in period (in shares)		15,800
Cumulative Spectrum Proceeds Monetized \| Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Measurement period	4 years
Vesting if target metric achieved (in shares)	30,049
Cumulative Spectrum Proceeds Monetized \| Performance Stock Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting if target metric achieved (in shares)	15,025
Cumulative Spectrum Proceeds Monetized \| Performance Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting if target metric achieved (in shares)	60,098
2023 Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized and reserved for issuance (in shares)					250,000
2023 Stock Plan \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance threshold, percentage		100.00%
2014 Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available (in shares)		388,151
2014 Stock Plan \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized and reserved for issuance (in shares)		151,838

Intangible Assets - Schedule of Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Indefinite-Lived Intangible Assets [Roll Forward]
Beginning balance	$ 216,743	$ 202,044
Acquisitions and transfers	2,940	2,966
Exchanges - licenses received	126	13,292
Exchanges - licenses surrendered	(33)	(2,507)
Ending balance	$ 219,776	$ 215,795

Contingencies and Guaranty	3 Months Ended
Contingencies and Guaranty	Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Contingencies and Guaranty	Contingencies and Guaranty Contingent Liabilities SDG&E Refund Obligations In February 2021, the Company entered into an agreement with SDG&E, San Diego Gas & Electric Company, a subsidiary of Sempra Energy (“SDG&E”), to sell 900 MHz Broadband Spectrum throughout SDG&E’s California service territory, including San Diego and Imperial Counties and portions of Orange County (the “SDG&E Agreement,”), for a total payment of $50.0 million. The total payment of $50.0 million is comprised of an initial payment of $20.0 million received in February 2021 and the remaining payments which are due as the Company delivers the relevant cleared 900 MHz Broadband Spectrum and the associated broadband licenses to SDG&E. As the Company is required to refund payments it has received from SDG&E in the event of termination or non-delivery of the specific county’s full 900 MHz Broadband Spectrum, it recorded the initial payments as contingent liability on the Company’s Consolidated Balance Sheets. A reduction in the contingent liability and a gain or loss on the sale of spectrum will be recognized for each county once the Company delivers the full cleared 900 MHz Broadband Spectrum and the associated broadband license(s) to SDG&E. LCRA Refund Obligation In April 2023, the Company entered into the LCRA Agreement for a total payment of $30.0 million, to be paid through fiscal year 2026 pursuant to the terms of the agreement. In December 2023, the Company received $15.0 million in milestone payments, of which $7.5 million was deposited in an escrow account. The remaining payments are due as the Company delivers the relevant cleared 900 MHz Broadband Spectrum and the associated broadband licenses to LCRA. As the Company is required to refund the deposit it has received from LCRA in the event of termination or non-delivery of the specific county’s full cleared 900 MHz Broadband Spectrum, it recorded the initial payments as contingent liability on the Company’s Consolidated Balance Sheets. A reduction in the contingent liability and a gain or loss on the sale of spectrum will be recognized for each county once the Company delivers the full cleared 900 MHz Broadband Spectrum and the associated broadband license(s) to LCRA. See Note 3 Escrow Deposits for further discussion on the escrow deposit. Oncor Refund Obligation In June 2024, the Company entered into the Oncor Agreement for a total payment of $102.5 million, to be paid through fiscal year 2026 pursuant to the terms of the agreement. In June 2024, the Company received an initial payment of $10.0 million with remaining payments due to the Company for each county, at closing. The timing and rights to milestone payments could vary as 900 MHz broadband licenses are granted by the FCC, broadband licenses are assigned to Oncor and incumbents are cleared by the Company. As the Company is required to refund the deposit it has received from Oncor in the event of termination or non-delivery of the specific county’s full cleared 900 MHz Broadband Spectrum, it recorded the initial payment as contingent liability on the Company’s Consolidated Balance Sheets. A reduction in the contingent liability and a gain or loss on the sale of spectrum will be recognized for each county once the Company delivers the full cleared 900 MHz Broadband Spectrum and the associated broadband license(s) to Oncor. Xcel Energy Guaranty In October 2022, the Company entered into an agreement with Xcel Energy Services Inc. (“Xcel Energy”) providing Xcel Energy dedicated long-term usage of the Company’s 900 MHz Broadband Spectrum for a term of 20 years throughout Xcel Energy’s service territory in eight states (the “Xcel Energy Agreement”). In connection with Xcel Energy Agreement, the Company entered into a guaranty agreement, under which the Company guaranteed the delivery of the relevant 900 MHz Broadband Spectrum and the associated broadband licenses in Xcel Energy’s service territory in eight states along with other commercial obligations. In the event of default or non-delivery of the specific territory’s 900 MHz Broadband Spectrum, the Company is required to refund payments it has received. In addition, to the extent Anterix has performed any obligations, the Company’s liability and remaining obligations under the Xcel Energy Agreement will extend only to the remaining unperformed obligations. The Company recorded $67.1 million in deferred revenue in connection with the prepayments received as of June 30, 2024. The Company commenced delivery of the relevant cleared 900 MHz Broadband Spectrum and the associated broadband leases in the first quarter of fiscal year 2024 and will continue through 2029. As of June 30, 2024, the maximum potential liability of future undiscounted payments under this agreement is approximately $64.4 million. 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. Pandemic and Macroeconomic Conditions Recent macroeconomic events, inflation and geopolitical matters, have increased operating costs or resulted in delays in customer contracting or impacted the availability of equipment necessary for the deployment of the Company’s target customers’ planned PLTE projects. The Company continues to closely monitor these risks. Although difficult to quantify, the Company believes the current macroeconomic environment, including inflation, may have an adverse effect on the Company’s target customers’ businesses, which may harm the Company’s commercialization efforts and negatively impact the Company’s revenues and liquidity. If the Company is not able to control its operating costs or if the Company’s commercialization efforts are slowed or negatively impacted, continued periods of high inflation could have a material adverse effect on the Company’s business, operating results and financial condition.

Leases (Tables)

3 Months Ended

Jun. 30, 2024

Leases [Abstract]

Schedule of Additional Lease Cost Information

Weighted-average remaining lease term and incremental borrowing rate for the Company’s operating leases are as follows:


	Three months ended June 30,
	2024	2023
Weighted average term - operating lease liabilities	3.66 years	2.77 years
Weighted average incremental borrowing rate - operating lease liabilities	9%	12%

Schedule of Lease Cost

The following table presents total lease cost for the three months ended June 30, 2024 and 2023 (in thousands):


	Three months ended June 30,
	2024		2023
Lease cost
Operating lease cost	$	501	$	507


Total lease cost	$	501	$	507

Schedule of Supplemental Lease Information

The following table presents supplemental balance sheet information as of June 30, 2024 and March 31, 2024 (in thousands):


	June 30, 2024		March 31, 2024
Non-current assets - right of use assets, net	$	4,493	$	4,432
Current liabilities - operating lease liabilities	$	1,807	$	1,850
Non-current liabilities - operating lease liabilities	$	3,453	$	3,446

Schedule of Future Minimum Payments


Fiscal Year	Operating Leases
2025 (excluding the three months ended June 30, 2024)	$	1,688
2026	1,562
2027	1,158
2028	815
2029	558
After 2029	249
Total future minimum lease payments	6,030
Amount representing interest	(770)
Present value of net future minimum lease payments	$	5,260

Stockholders’ Equity (Tables)

3 Months Ended

Jun. 30, 2024

Equity [Abstract]

Schedule of Share Repurchase Program

The following table presents the share repurchase activity for the three months ended June 30, 2024 and 2023 (in thousands, except per share data):


	Three months ended June 30,
	2024		2023

Number of shares repurchased and retired	63		—
Average price paid per share*	$	32.47	$	—
Total cost to repurchase	$	2,027	$	—

*Average price paid per share includes costs associated with the repurchases.

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2024
Income Tax Disclosure [Line Items]
Income tax expense (benefit)	$ 1,222	$ (240)
Effective income tax rate, percentage	26.50%	24.90%
Federal
Income Tax Disclosure [Line Items]
Deferred tax liability	$ 3,300		$ 3,100
State
Income Tax Disclosure [Line Items]
Deferred tax liability	4,100		$ 3,200
Federal and state
Income Tax Disclosure [Line Items]
Income tax expense (benefit)	$ 1,200	$ (200)

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
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-Section 50
-Paragraph 32
-Subparagraph (ee)
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.7)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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-Publisher FASB
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Subparagraph (a)
-SubTopic 20
-Topic 740
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482659/740-20-45-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h))
-SubTopic 10
-Topic 235
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

+ Details

Income Taxes	3 Months Ended
Income Taxes	Jun. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company used a discrete effective tax rate method to calculate taxes for the three months ended June 30, 2024 and 2023, which were a result of its inability to use some portion of its federal and state net operating losses (“NOLs”) carryforwards against the deferred tax liability created by the amortization of indefinite-lived intangible assets and the change in the state effective tax rate. 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 could result in significant changes in the estimated annual effective tax rate. Accordingly, for the three months ended June 30, 2024, the Company recorded a total tax expense of $1.2 million. For the three months ended June 30, 2023, the Company recorded a total tax benefit of $0.2 million. The effective income tax rates for the three months ended June 30, 2024 and 2023 were 26.5% and 24.9%, respectively. The increase in the effective tax rate was the result of higher state effective tax rate due to taxable income related to customer milestone payments. The Company’s NOLs generated after March 31, 2018 may be used as an indefinite-lived asset to offset its deferred tax liability but are limited to 80% of future taxable income. The deferred tax liabilities as of June 30, 2024 are approximately $3.3 million for federal and $4.1 million for state. The deferred tax liabilities as of March 31, 2024 were approximately $3.1 million for federal and $3.2 million for state.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12C

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12B

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477891/740-270-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.5.Q1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-13

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/740/tableOfContent

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-17

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482603/740-30-50-2

+ Details

Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Leases [Abstract]
Non-current assets - right of use assets, net	$ 4,493	$ 4,432
Current liabilities - operating lease liabilities	1,807	1,850
Non-current liabilities - operating lease liabilities	$ 3,453	$ 3,446

Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
Leases - Lease Cost (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Lease, Cost [Abstract]
Operating lease cost	$ 501	$ 507
Total lease cost	$ 501	$ 507

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2024	Mar. 31, 2024
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	18,581,297	18,452,892
Common stock, shares outstanding (in shares)	18,581,297	18,452,892

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (15,524)	$ (2,118)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	179	246
Stock compensation expense	4,346	4,265
Deferred income taxes	1,057	(272)
Right of use assets	434	283
Gain on disposal of intangible assets, net	(93)	(10,785)
Gain on disposal of long-lived assets, net	0	(31)
Changes in operating assets and liabilities
Prepaid expenses and other assets	974	563
Accounts payable and accrued expenses	(1,558)	1,169
Due to related parties	0	(533)
Operating lease liabilities	(531)	(388)
Contingent liability	10,000	0
Deferred revenue	(1,525)	(608)
Other liabilities	(120)	0
Net cash used in operating activities	(2,361)	(8,209)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of intangible assets, including refundable deposits, retuning costs and swaps	(5,400)	(5,170)
Purchases of equipment	0	(25)
Net cash used in investing activities	(5,400)	(5,195)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from stock option exercises	1,617	7
Repurchases of common stock	(2,027)	0
Payments of withholding tax on net issuance of restricted stock	(661)	(752)
Net cash used in financing activities	(1,071)	(745)
Net change in cash and cash equivalents and restricted cash	(8,832)	(14,149)
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH
Cash and cash equivalents and restricted cash at beginning of the period	68,124	43,182
Cash and cash equivalents and restricted cash at end of the period	59,292	29,033
Cash paid during the period:
Taxes paid	0	1
Operating leases paid	593	574
Non-cash investing activity:
Network equipment provided in exchange for wireless licenses	47	438
Right of use assets new leases	248	65
Right of use assets modifications and renewals	247	0
Reconciliation of Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	51,715	29,033
Escrow deposits	7,577	0
Total cash and cash equivalents and restricted cash	$ 59,292	$ 29,033

Related Party Transactions	3 Months Ended
Related Party Transactions	Jun. 30, 2024
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Refer to the Company’s 2024 Annual Report for a more complete description of the nature of its related party transactions prior to March 31, 2024. During the three months ended June 30, 2024, the Company did not have any related party transactions.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-6

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(g)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(e))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/850/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-6

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

+ Details

Nature of Operations and Basis of Presentation (Details) circuitMile in Thousands, people in Millions, home in Millions, $ in Millions	1 Months Ended	3 Months Ended
	Jun. 30, 2024 USD ($) county circuitMile home people	Jun. 30, 2024 county	Jun. 30, 2023 county
Conversion of Stock [Line Items]
Broadband licenses granted, number of counties \| county		1	9
Licensing Agreements \| Oncor Electric Delivery Company LLC
Conversion of Stock [Line Items]
Broadband licenses granted estimated consideration \| $	$ 102.5
Broadband licenses granted, number of counties \| county	95
Initial consideration received \| $	$ 10.0
Number of transmission and distribution lines \| circuitMile	143
Number of homes served \| home	4
Population served \| people	13

Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
Leases - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Lease [Line Items]
Net lease cost	$ 501	$ 507
Minimum
Lease [Line Items]
Lease extension	3 years
Maximum
Lease [Line Items]
Lease extension	10 years

Contingencies and Guaranty (Details) - USD ($) $ in Thousands	1 Months Ended				3 Months Ended
	Dec. 31, 2023	Apr. 30, 2023	Oct. 31, 2022	Feb. 28, 2021	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2024	Mar. 31, 2023
Commitments And Contingencies [Line Items]
Contingent liability				$ 20,000	$ 25,000		$ 15,000
Payments to acquire intangible assets					5,400	$ 5,170
Increase in deposit assets	$ 7,500
Prepayments received					120,687	$ 60,151	$ 122,212	$ 60,759
Lower Colorado River Authority (LCRA) \| Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Commitments And Contingencies [Line Items]
Initial payment received	$ 15,000
Lower Colorado River Authority (LCRA) \| Licensing Agreements
Commitments And Contingencies [Line Items]
Payments to acquire intangible assets		$ 30,000
Xcel Energy \| Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Commitments And Contingencies [Line Items]
Agreement term			20 years
Prepayments received					67,100
Xcel Energy \| Collaborative Arrangement, Transaction with Party to Collaborative Arrangement \| Maximum
Commitments And Contingencies [Line Items]
Prepayments received					$ 64,400
SDG&E
Commitments And Contingencies [Line Items]
Consideration transferred				$ 50,000

Net Income (Loss) Per Share of Common Stock	3 Months Ended
Net Income (Loss) Per Share of Common Stock	Jun. 30, 2024
Earnings Per Share [Abstract]
Net Income (Loss) Per Share of Common Stock	Net Income (Loss) Per Share of Common Stock Basic net income (loss) per common share is calculated by dividing the net income (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 income (loss) per share calculation, stock options and restricted stock units and awards are considered to be potentially dilutive securities. Diluted earnings per share is computed using the treasury stock method. For the three months ended June 30, 2024 and 2023, there were 215,423 and 193,948 potentially dilutive stock options and restricted stock units outstanding, respectively, excluded from the calculation of diluted weighted-average shares as their effects are anti-dilutive because the Company reported a net loss for the three months ended June 30, 2024 and 2023, respectively.

Revenue (Tables)

3 Months Ended

Jun. 30, 2024

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following table provides information regarding the Company’s revenue for each of the services it provides pursuant to its spectrum revenue agreements for the three months ended June 30, 2024 and 2023 (in thousands):


	Three months ended June 30,
	2024		2023
Spectrum revenue
900 MHz Broadband Spectrum Revenue
Ameren Corporation	$	156	$	152
Evergy	386		274
Xcel Energy (1)	801		—
Narrowband Spectrum Revenue
Motorola	182		182
Total spectrum revenue (2)	$	1,525	$	608

1.The Company commenced revenue recognition in connection with the delivery of cleared 900 MHz Broadband Spectrum and the associated broadband leases to Xcel Energy in September 2023.

2.Revenue recognized during the three months ended June 30, 2024 and 2023 was included in deferred revenue at the beginning of the respective periods.

Schedule of Contract Assets

The Company’s capitalized contract costs consisted of the following activity during the three months ended June 30, 2024 and 2023 (in thousands):


	Three months ended June 30,
	2024		2023
Balance at the beginning of the period	$	1,027	$	870
Additions	26		28
Amortization	(30)		(10)

Balance at the end of the period	1,023		888
Less amount classified as current assets (1)	(586)		(445)
Noncurrent assets (1)	$	437	$	443

1.Current assets are recorded as prepaid expenses and other current assets and noncurrent assets are recorded as other assets on the Company’s Consolidated Balance Sheets.

Schedule of Contract Liabilities

The Company’s contract liabilities consisted of the following activity during the three months ended June 30, 2024 and 2023 (in thousands):


	Three months ended June 30,
	2024		2023
Balance at the beginning of the period	$	122,212	$	60,759
Net additions (1)	—		—
Revenue recognized	(1,525)		(608)
Balance at the end of the period	120,687		60,151
Less amount classified as current liabilities (2)	(5,968)		(2,896)
Noncurrent liabilities (2)	$	114,719	$	57,255

1.Represents milestone payments received from customer contracts pursuant to the terms of the associated spectrum revenue agreements, net of delivery delay adjustments.

2.Current liabilities and noncurrent liabilities are recorded as deferred revenue on the Company’s Consolidated Balance Sheets.

Intangible Assets - Narrative (Details)	3 Months Ended
Intangible Assets - Narrative (Details)	Jun. 30, 2024 USD ($) county	Jun. 30, 2023 USD ($) county
Acquired Indefinite-lived Intangible Assets [Line Items]
Impairment	$ 0	$ 0
Broadband licenses granted, number of counties \| county	1	9
Exchanges - licenses received	$ 126,000	$ 13,292,000
Licenses exchanged	33,000	2,507,000
Gain (loss) on disposition of intangible assets	100,000	10,800,000
Licensing Agreements
Acquired Indefinite-lived Intangible Assets [Line Items]
Exchanges - licenses received	100,000	13,300,000
Licenses exchanged	$ 0	$ 2,500,000

Concentrations of Credit Risk and Significant Customer (Details) - USD ($)	Jun. 30, 2024	Mar. 31, 2024
Accounts Receivable \| Customer Concentration Risk
Concentration Risk [Line Items]
Accounts receivable	$ 0	$ 0

Revenue - Narrative (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-07-01 $ in Millions	Jun. 30, 2024 USD ($)
Disaggregation of Revenue [Line Items]
Remaining performance obligation, amount	$ 185.6
Remaining performance obligation, expected timing of satisfaction, period	30 years

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Revenue

3 Months Ended

Jun. 30, 2024

Revenue from Contract with Customer [Abstract]

Revenue


	Three months ended June 30,
	2024		2023
Spectrum revenue
900 MHz Broadband Spectrum Revenue
Ameren Corporation	$	156	$	152
Evergy	386		274
Xcel Energy (1)	801		—
Narrowband Spectrum Revenue
Motorola	182		182
Total spectrum revenue (2)	$	1,525	$	608

1.The Company commenced revenue recognition in connection with the delivery of cleared 900 MHz Broadband Spectrum and the associated broadband leases to Xcel Energy in September 2023.

2.Revenue recognized during the three months ended June 30, 2024 and 2023 was included in deferred revenue at the beginning of the respective periods.

Spectrum Revenue Agreements

Refer to the Company’s 2024 Annual Report for a description of the Company’s spectrum revenue agreements entered into prior to March 31, 2024.

Capitalized Contract Costs

The Company capitalizes incremental costs associated with obtaining a spectrum revenue agreement with a customer, which generally includes sales commissions. The Company’s capitalized contract costs consisted of the following activity during the three months ended June 30, 2024 and 2023 (in thousands):


	Three months ended June 30,
	2024		2023
Balance at the beginning of the period	$	1,027	$	870
Additions	26		28
Amortization	(30)		(10)

Balance at the end of the period	1,023		888
Less amount classified as current assets (1)	(586)		(445)
Noncurrent assets (1)	$	437	$	443

1.Current assets are recorded as prepaid expenses and other current assets and noncurrent assets are recorded as other assets on the Company’s Consolidated Balance Sheets.

Contract Liabilities

Contract liabilities primarily relate to advanced consideration received from customers in connection with spectrum revenue agreements, for which revenue is recognized over the term of each delivered broadband lease. The Company’s contract liabilities consisted of the following activity during the three months ended June 30, 2024 and 2023 (in thousands):


	Three months ended June 30,
	2024		2023
Balance at the beginning of the period	$	122,212	$	60,759
Net additions (1)	—		—
Revenue recognized	(1,525)		(608)
Balance at the end of the period	120,687		60,151
Less amount classified as current liabilities (2)	(5,968)		(2,896)
Noncurrent liabilities (2)	$	114,719	$	57,255

1.Represents milestone payments received from customer contracts pursuant to the terms of the associated spectrum revenue agreements, net of delivery delay adjustments.

2.Current liabilities and noncurrent liabilities are recorded as deferred revenue on the Company’s Consolidated Balance Sheets.

Remaining Performance Obligations

Revenue allocated to remaining performance obligations of the Company’s contracts represent contracted revenue that will be recognized in future periods. Total performance obligations include deferred revenue (i.e., contract liabilities) as well as amounts that will be invoiced and recognized in future periods. Revenue allocated to remaining performance obligations was $185.6 million as of June 30, 2024, which will be recognized over the remaining contract terms up to 30 years.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
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+ Details

Leases - Additional Lease Cost Information (Details)	Jun. 30, 2024	Jun. 30, 2023
Lease, Cost [Abstract]
Weighted average term - operating lease liabilities	3 years 7 months 28 days	2 years 9 months 7 days
Weighted average incremental borrowing rate - operating lease liabilities	9.00%	12.00%

Concentrations of Credit Risk and Significant Customer	3 Months Ended
Concentrations of Credit Risk and Significant Customer	Jun. 30, 2024
Risks and Uncertainties [Abstract]
Concentrations of Credit Risk and Significant Customer	Concentrations of Credit Risk and Significant Customer Financial instruments which potentially expose the Company to concentrations of credit risk consist primarily of cash and cash equivalents. The Company places its cash and temporary cash investments with financial institutions for which credit loss is not anticipated. As of June 30, 2024 and March 31, 2024, substantially all of the Company’s cash balance exceeded the federally insured limits. For the three months ended June 30, 2024 and 2023, each of the Company’s customers accounted for greater than 10% of total revenue. As of June 30, 2024 and March 31, 2024, the Company does not have an outstanding accounts receivable balance.

Stockholders’ Equity - Share Repurchase Program (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Equity [Abstract]
Number of shares repurchased and retired (in shares)	63	0
Average price paid per share (in dollars per share)	$ 32.47	$ 0
Total cost to repurchase	$ 2,027	$ 0

Revenue - Schedule of Contract Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2024
Revenue from Contract with Customer [Roll Forward]
Beginning balance	$ 122,212	$ 60,759
Net additions	0	0
Revenue recognized	(1,525)	(608)
Ending balance	120,687	60,151
Contract with Customer, Liability [Abstract]
Balance	120,687	60,151	$ 122,212
Less amount classified as current liabilities	(5,968)	(2,896)	(6,470)
Noncurrent liabilities	$ 114,719	$ 57,255	$ 115,742

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Spectrum revenue	$ 1,525	$ 608
Operating expenses
General and administrative	12,851	11,673
Sales and support	1,850	1,275
Product development	1,750	1,069
Depreciation and amortization	179	246
Operating expenses	16,630	14,263
Gain from disposal of intangible assets, net	(93)	(10,785)
Gain from disposal of long-lived assets, net	0	(31)
Loss from operations	(15,012)	(2,839)
Interest income	694	386
Other income	16	95
Loss before income taxes	(14,302)	(2,358)
Income tax expense (benefit)	1,222	(240)
Net loss	$ (15,524)	$ (2,118)
Net loss per common share basic (in dollars per share)	$ (0.84)	$ (0.11)
Net loss per common share diluted (in dollars per share)	$ (0.84)	$ (0.11)
Weighted-average common shares used to compute basic net loss per share (in shares)	18,486,964	18,951,046
Weighted-average common shares used to compute diluted net loss per share (in shares)	18,486,964	18,951,046