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Revenue Recognition (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Revenue Recognition (Details) [Line Items] |  |  |  |
Aggregate unrealized loss on portfolio |  |  | $ 1,300,000 |
Gross revenue from stock borrow/ Stock loan | $ 4,008,000 | $ 4,183,000 | 11,963,000 | $ 11,909,000
Maximum [Member] |  |  |  |
Revenue Recognition (Details) [Line Items] |  |  |  |
Expenses from stock borrow/stock loan | 13,000,000 | 9,921,000 | 34,300,000 | 26,222,000
Minimum [Member] |  |  |  |
Revenue Recognition (Details) [Line Items] |  |  |  |
Expenses from stock borrow/stock loan | $ 8,992,000 | $ 5,738,000 | $ 22,337,000 | $ 14,313,000

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