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Intangible Assets (Tables) | 12 Months Ended
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Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Indefinite-Lived Intangible Assets | Intangible assets consist of the following at March 31, 2023 and 2022 (in thousands):
| Wireless Licenses
Balance at March 31, 2021 | $ | 122,117 |
Acquisitions | 17,843 |
Exchanges - licenses received | 15,341 |
Exchanges - licenses surrendered | (4,132) |
Balance at March 31, 2022 | 151,169 |
Acquisitions | 12,476 |
Exchanges - licenses received | 46,174 |
Exchanges - licenses surrendered | (7,775) |
Balance at March 31, 2023 | $ | 202,044 |
Schedule of Acquired Finite-Lived Intangible Assets by Major Class | The purchases of intangible assets, including refundable deposits, consisted of the following activity during the years March 31, 2023, 2022 and 2021 (in thousands):
| 2023 |  | 2022 |  | 2021
Refundable deposits * | $ | 6,492 |  |  | $ | 5,621 |  |  | $ | (1,986) |
Retuning cost and Swaps | 6,036 |  |  | 2,894 |  |  | 290 |
Purchases and Anti-Windfall Payments | 12,476 |  |  | 17,843 |  |  | 15,640 |
Total | $ | 25,004 |  |  | $ | 26,358 |  |  | $ | 13,944 |
* The decrease in refundable deposits during the year end 2021 was related to the exchange of narrowband license discussed below.

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- Definition Tabular disclosure of the characteristics, including initial carrying value, residual amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance and exist in perpetuity, by either major class or business segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b),(d) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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