Revenue Recognition (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue Recognition (Details) [Line Items]
Aggregate unrealized loss on portfolio			$ 2,400,000
Gross revenue from stock borrow/ Stock loan	$ 4,513,000	$ 4,148,000	7,955,000	$ 7,726,000
Maximum [Member]
Revenue Recognition (Details) [Line Items]
Expenses from stock borrow/stock loan	11,524,000	8,836,000	21,300,000	16,301,000
Minimum [Member]
Revenue Recognition (Details) [Line Items]
Expenses from stock borrow/stock loan	$ 7,011,000	$ 4,688,000	$ 13,345,000	$ 8,575,000