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v3.23.1

Intangible Assets - Narrative (Details) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 USD ($) | Aug. 31, 2020 USD ($) | Mar. 31, 2023 USD ($) channel county | Mar. 31, 2022 USD ($) county | Mar. 31, 2021 USD ($) | Jan. 31, 2020 channel | Jan. 31, 2018 USD ($)
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Impairment charges |  |  | $ 0 | $ 0 | $ 0 |  |
Broadband licenses granted, number of countries | county |  |  | 84 | 21 |  |  |
Gain (loss) from disposal of intangible assets, net |  |  | $ 38,399,000 | $ 11,209,000 | (3,849,000) |  |
Prepayments received |  |  | 60,759,000 | 54,678,000 | 2,983,000 |  |
Intangible assets |  |  | $ 202,044,000 | 151,169,000 |  |  |
Number of narrowband 900 MHz channels subject to relocation | channel |  |  | 3 |  |  | 3 |
Reprogramming |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Gain (loss) from disposal of intangible assets, net |  | $ (300,000) |  |  |  |  |
AAR |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Gain (loss) from disposal of intangible assets, net |  |  |  |  | (4,700,000) |  |
Number of narrowband 900 MHz channels licensed | channel |  |  | 6 |  |  |  |
Wireless Licenses |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Licenses received |  |  | $ 46,174,000 | 15,341,000 |  |  |
Licenses exchanged |  |  | 7,775,000 | 4,132,000 |  |  |
Intangible assets |  |  | $ 202,044,000 | $ 151,169,000 | $ 122,117,000 |  |
Spectrum Licenses |  |  |  |  |  |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Gain (loss) from disposal of intangible assets, net | $ 1,100,000 |  |  |  |  |  |
Estimated fair value | 200,000 |  |  |  |  |  |
Proceeds from sale of intangible assets | 1,200,000 |  |  |  |  |  |
Prepayments received | 600,000 |  |  |  |  |  | $ 600,000
Intangible assets | $ 300,000 |  |  |  |  |  |

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