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Schedule of Realized Gain (loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Schedule of Investments [Abstract] |  |  |  |
Sales proceeds |  | $ 1,878 |  | $ 15,224
Realized gains |  | 33 |  | 1,108
Realized losses |  |  |  |
Net realized gains |  | $ 33 |  | $ 1,108

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