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Intangible Assets | 12 Months Ended
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Mar. 31, 2026
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets | 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 years ended March 31, 2026 and 2025. Intangible assets consist of the following at March 31, 2026 and 2025 (in thousands):
| 2026 |  | 2025
Balance at the beginning of the year | $ | 228,983 |  | $ | 216,743
Acquisitions | 30,655 |  |  | 12,082 |
Sale of intangible assets | (54,345) |  | (22,641)
Exchanges - licenses received | 139,608 |  |  | 27,030 |
Exchanges - licenses surrendered | (34,189) |  |  | (4,231) |
Balance at the end of the year | $ | 310,712 |  | $ | 228,983
Purchases of intangible assets, including refundable deposits, retuning costs and swaps During the years ended March 31, 2026 and 2025, 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 U.S. 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 costs or intangible assets on 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 year ended March 31, 2026, the FCC granted the Company broadband licenses for 219 counties. The Company recorded the new broadband licenses received in the amount of $139.6 million. In connection with receiving the broadband licenses, the Company disposed of $34.2 million related to the value ascribed to the narrowband licenses it relinquished to the FCC for the same 219 counties. The total carrying value of the 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 (including additional clearing cost for previously exchanged narrowband licenses). As a result of the exchange of narrowband licenses for broadband licenses, the Company recorded a gain on exchange of intangible assets of $105.4 million, for the year ended March 31, 2026. During the year ended March 31, 2025, the FCC granted the Company broadband licenses for 67 counties. The Company recorded the new broadband licenses received in the amount of $27.0 million. In connection with receiving the broadband licenses, the Company disposed of $4.2 million related to the value ascribed to the narrowband licenses it relinquished to the FCC for the same 67 counties. The total carrying value of the 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 (including additional clearing cost for previously exchanged narrowband licenses). As a result of the exchange of narrowband licenses for broadband licenses, the Company recorded a gain on exchange of intangible assets of $22.8 million, for the year ended March 31, 2025. Broadband License Sale During the year ended March 31, 2026, the Company transferred to LCRA the 900 MHz Broadband Spectrum and associated broadband licenses related to 64 counties for the total consideration of $29.5 million. The total consideration included milestone payments of $14.1 million received as of March 31, 2026 and $15.4 million reduction of contingent liability. As a result, the Company recognized a reduction in intangible assets of $16.6 million and recorded a $12.8 million gain on sale of intangible assets on the Company’s Consolidated Statements of Operations. During the year ended March 31, 2026, the Company transferred to Oncor Electric Delivery Company LLC (“Oncor”) the 900 MHz Broadband Spectrum and associated broadband licenses related to 91 counties for the total consideration of $59.7 million received as of March 31, 2026. The total consideration included milestone payments of $53.7 million received as of March 31, 2026, inclusive of reimbursable clearing costs and Anti-Windfall Payments and $6.0 million reduction of contingent liability. As a result, the Company recognized a reduction in intangible assets of $37.7 million and recorded a $22.0 million gain on sale of intangible assets on the Company’s Consolidated Statements of Operations. During the year ended March 31, 2025, the Company transferred to Oncor the 900 MHz Broadband Spectrum and the associated broadband licenses related to four counties for the total consideration of $40.9 million. The total consideration included a $34.0 million milestone payment received in January 2025, $4.0 million allocated from the previously received $10.0 million deposit and $2.9 million non-trade receivable on the Company’s Consolidated Balance Sheets related to reimbursable clearing costs and Anti-Windfall Payments. As a result, the Company recognized a reduction in intangible assets of $22.6 million and recorded a $18.3 million gain on sale of intangible assets on the Company’s Consolidated Statements of Operations.

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