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v3.23.3

Marketable Securities (Narratives) (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | May 18, 2023 | Mar. 31, 2023
Gain (Loss) on Securities [Line Items] |  |  |  |  |  |
Marketable Securities, Realized Gain (Loss) | $ 0 | $ 0 | $ 0 | $ 0 |  |
Unrealized Gain (Loss) on Investments | 349,000 | 372,000 | 270,000 | 920,000 |  |
Proceeds from Equity Method Investment, Distribution, Return of Capital |  |  | 144,000 | 313,000 |  |
Proceeds from Equity Method Investment, Distribution |  |  | 247,000 |  |  |
EMC [Member] |  |  |  |  |  |
Gain (Loss) on Securities [Line Items] |  |  |  |  |  |
Increase (Decrease) in Accounts Receivable, Related Parties |  |  | 5,833,000 | 5,083,000 |  |
Equity Method Investments | 2,996,000 |  | 2,996,000 |  |  | $ 2,752,000
Investment Income, Net | $ 183,000 | $ 1,000 | $ 559,000 | $ 62,000 |  |
EMC [Member] | EMC [Member] |  |  |  |  |  |
Gain (Loss) on Securities [Line Items] |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  | 49.00% |

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