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Marketable Securities and Other Investments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Mar. 31, 2025
Gain (Loss) on Securities [Line Items] |  |  |  |  |
Unrealized gain (loss) on investments | $ 133 | $ 234 | $ 331 | $ 236 |
Net realized gains (losses) on sale of marketable securities | 178 | 57 | 178 | 57 |
Accounts receivable balance | 179,267 |  | 179,267 |  | $ 165,481
Related Party | EMC |  |  |  |  |
Gain (Loss) on Securities [Line Items] |  |  |  |  |
Accounts receivable balance | 5,690 |  | 5,690 |  | 4,250
Amount of transactions | $ 2,560 | 2,476 | $ 4,197 | 6,597 |
EMC |  |  |  |  |
Gain (Loss) on Securities [Line Items] |  |  |  |  |
Ownership interest | 49.00% |  | 49.00% |  |
Carrying values of investments | $ 5,417 |  | $ 5,417 |  | $ 4,318
Investment income | $ 82 | $ 236 | $ 733 | $ 362 |

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