XML 63 R30.htm IDEA: XBRL DOCUMENT
v3.26.1

Revenue (Tables) | 12 Months Ended
--- | ---
Mar. 31, 2026
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 years ended March 31, 2026 and 2025 (in thousands):
| 2026 |  | 2025 |  |
Spectrum revenue |  |  |  |  |
900 MHz Broadband Spectrum Revenue |  |  |  |  |
Ameren Corporation | $ | 824 |  |  | $ | 737 |  |  |
Evergy | 1,541 |  |  | 1,542 |  |  |
Xcel Energy | 3,524 |  |  | 3,205 |  |  |
TECO (1) | 612 |  |  | — |  |  |
Narrowband Spectrum Revenue |  |  |  |  |
Motorola (2) | — |  |  | 547 |  |  |
Total spectrum revenue | $ | 6,501 |  |  | $ | 6,031 |  |  |
1.The Company commenced revenue recognition in connection with the delivery of cleared 900 MHz Broadband Spectrum and the associated broadband licenses to TECO in June 2025. 2.As of December 31, 2024, the Company recognized all the revenue associated with the 2014 Motorola spectrum agreement.
Schedule of Lessor, Operating Lease Agreements | The following table provides information regarding the Company’s spectrum lease agreements (as defined in the table below and collectively referred to as the “Spectrum Lease Agreements”) as of March 31, 2026:
Spectrum Lease Agreements (1) | Agreement Date | Initial Term | Renewal Options | Total Consideration (2) | Payments Received | Payments Remaining
Ameren Corporation (“Ameren”) | December 2020 | 30 - years | 10 - years | $47.7 million | $31.4 million | $16.3 million (3)
Evergy Services, Inc. (“Evergy”) | September 2021 | 20 - years | 2 x 10 - years | $30.2 million | $30.2 million | $—
Xcel Energy Services Inc. (“Xcel Energy”) | October 2022 | 20 - years | 2 x 10 - years | $80.0 million | $76.0 million | $4.0 million (4)
Tampa Electric Company (“TECO”) | November 2023 | 20 - years | 2 x 10 - years | $34.5 million | $34.5 million | $—
1.The Spectrum Lease Agreements are subject to customary provisions regarding remedies for non-delivery, including termination rights and refund of amounts paid, if the Company fails to perform its other contractual obligations, including failure to deliver the relevant cleared 900 MHz Broadband Spectrum in accordance with the terms of the Agreements. 2.In accordance with ASC 606, the payments of prepaid fees under the spectrum lease agreements will be accounted for as deferred revenue on the Company’s Consolidated Balance Sheets. Revenue is recognized over time as the performance obligations of clearing the 900 MHz Broadband Spectrum and the associated broadband leases are delivered by the respective county, over the contractual term. 3.The remaining payments of $16.3 million, excluding potential penalties, for the 30-year initial term are due by mid-2026, per the terms of the Ameren Agreements and as the Company delivers the relevant cleared 900 MHz Broadband Spectrum and the associated broadband leases. 4.The remaining payments of $4.0 million, excluding potential penalties, for the 20-year initial term are due by mid-2028, per the terms of the Xcel Energy Agreement and as the Company delivers the relevant cleared 900 MHz Broadband Spectrum and the associated broadband leases.
Schedule of Spectrum Sale Agreements | The following table provides information regarding the Company’s spectrum sale agreements entered into after December 2025 (as defined in the table below and collectively referred to as the “Spectrum Sale Agreements”) as of March 31, 2026:
Spectrum Sale Agreements (1) | Agreement Date | Total Consideration (2) | Payments Received | Payments remaining | Broadband license(s) delivered | Broadband license(s) remaining
CPS Energy (“CPS”) | January 2026 | $13.0 million | $6.5 million | $6.5 million | — | 1
Texas-New Mexico Power Company (“TNMP”) | March 2026 | $3.2 million | $— | $3.2 million | — | 2
NorthWestern Energy (“NWE”) | March 2026 | $7.7 million | $— | $7.7 million | — | 65
1.The Spectrum Sale Agreements are subject to customary provisions regarding remedies for non-delivery, including termination rights and refund of amounts paid, if the Company fails to perform its other contractual obligations, including failure to deliver the relevant cleared 900 MHz Broadband Spectrum in accordance with the terms of the Agreements. 2.In accordance with ASC 606, the payments of prepaid fees under the spectrum sale agreements will be accounted for as deferred revenue on the Company’s Consolidated Balance Sheets. Revenue will be recognized for each county once we deliver the cleared 900 MHz Broadband Spectrum and the associated broadband licenses. The following table provides information regarding the Company’s spectrum sale agreements entered into prior to December 2025 (as defined in the table below and collectively referred to as the “Spectrum Sale Agreements”) as of March 31, 2026:
Spectrum Sale Agreements (1) | Agreement Date | Total Consideration | Payments Received | Payments remaining | Broadband license(s) delivered | Broadband license(s) remaining
San Diego Gas & Electric (“SDG&E”) Agreement | February 2021 | $50.0 million | $45.6 million (2) | $3.1 million | 2 | 1
LCRA Agreement | April 2023 | $30.0 million | $29.3 million | $0.7 million | 64 | 4
LCRA Expansion Agreement | January 2025 | $13.5 million | $6.0 million | $6.5 million (3) | — | 34
Oncor Agreement | June 2024 | $102.5 million (4) | $100.6 million (4) | $— | 95 | —
1.The Spectrum Sale Agreements are subject to customary provisions regarding remedies for non-delivery, including termination rights and refund of amounts paid, if the Company fails to perform its other contractual obligations, including failure to deliver the relevant cleared 900 MHz Broadband Spectrum in accordance with the terms of the Agreements. A gain or loss on the sale of spectrum will be recognized for each county once we deliver the cleared 900 MHz Broadband Spectrum and the associated broadband licenses. 2.Net of delivery delay adjustments. 3.Includes a $1.0 million credit, which was applied against the remaining balance pursuant to the LCRA Expansion Agreement in recognition of their contributions to our business efforts. 4.Includes reimbursable clearing costs and Anti-Windfall Payments made in connection with the transfer of the associated broadband licenses. Total consideration included $7.5 million in estimated reimbursable clearing costs and Anti-Windfall Payments of which $5.6 million was realized. The following table summarizes the Company’s short-term and long-term contingent liabilities related to certain spectrum sale agreements based on the estimated timing of license deliveries (in thousands) as of March 31, 2026:
|  | 2026 |  | 2025 |
Spectrum Sale Agreements |  | Current |  | Long Term |  | Current |  | Long Term |
SDG&E |  | $ | 1,000 |  |  | $ | — |  |  | $ | 1,000 |  |  | $ | — |  |
LCRA Agreement |  | 1,220 |  |  | — |  |  | 1,093 |  |  | 15,336 |  |
LCRA Expansion Agreement |  | — |  |  | 6,000 |  |  | — |  |  | — |  |
Oncor |  | — |  |  | — |  |  | 6,000 |  |  | — |  |
Total contingent liabilities (1) |  | $ | 2,220 |  |  | $ | 6,000 |  |  | $ | 8,093 |  |  | $ | 15,336 |  |
1.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 900 MHz Broadband Spectrum and the associated broadband licenses.
Schedule of Contract Assets | The Company capitalizes incremental costs associated with obtaining a spectrum agreement with a customer, which generally includes sales commissions. Capitalized incremental costs are amortized over the contractual term beginning on the first delivery of a broadband lease. The Company’s capitalized contract costs consisted of the following activity (in thousands):
| 2026 |  | 2025
Balance at the beginning of the year | $ | 1,241 |  |  | $ | 1,027 |
Additions | 226 |  |  | 339 |
Amortization (1) | (962) |  |  | (125) |
Balance at the end of the year | 505 |  |  | 1,241 |
Less amount classified as current assets (2) | (24) |  |  | (132) |
Noncurrent assets (2) | $ | 481 |  |  | $ | 1,109 |
1.Due to the change in commission plan and the Company’s approach to monetizing its spectrum, the Company accelerated the amortization of approximately $0.9 million of certain outstanding capitalized assets as of March 31, 2026. 2.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 | 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 (in thousands):
| 2026 |  | 2025
Balance at the beginning of the year | $ | 124,672 |  |  | $ | 122,212 |
Net additions (1) | 43,007 |  |  | 8,491 |
Revenue recognized | (6,501) |  |  | (6,031) |
Balance at the end of the year | 161,178 |  |  | 124,672 |
Less amount classified as current liabilities (2) | (14,513) |  |  | (6,095) |
Noncurrent liabilities (2) | $ | 146,665 |  |  | $ | 118,577 |
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.

X
- Definition Contract with Customer, Contract Asset [Table Text Block] + References No definition available. + Details
Name: | atex_ContractWithCustomerContractAssetTableTextBlock
Namespace Prefix: | atex_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contract with Customer, Contract Liabilities [Table Text Block] + References No definition available. + Details
Name: | atex_ContractWithCustomerContractLiabilitiesTableTextBlock
Namespace Prefix: | atex_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule Of Lessor, Operating Lease Agreements + References No definition available. + Details
Name: | atex_ScheduleOfLessorOperatingLeaseAgreementsTableTextBlock
Namespace Prefix: | atex_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
Name: | us-gaap_DisaggregationOfRevenueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 808 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479402/808-10-50-1 + Details
Name: | us-gaap_ScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration