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Marketable Securities and Other Investments (Details) - USD ($) | 12 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Gain (Loss) on Securities [Line Items] |  |  |
Unrealized gain (loss) on investments | $ 317,000 | $ (296,000) | $ (370,000)
Debt and equity securities, realized gain | 212,000 | 0 | 0
Dividend received from equity method investment | 144,000 | 313,000 | $ 324,000
Accounts receivable | 171,186,000 | 151,451,000 |
Related Party | EMC |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Accounts receivable | $ 10,300,000 | $ 5,083,000 |
EMC |  |  |
Gain (Loss) on Securities [Line Items] |  |  |
Equity method investment, ownership percentage | 49.00% | 49.00% |
Equity method investments | $ 3,377,000 | $ 2,752,000 |
Investment income, net | 890,000 | 365,000 |
Foreign currency transaction gain (loss), unrealized | (18,000) | (67,000) |
Dividend received from equity method investment | $ 247,000 | $ 313,000 |

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