Revenue Recognition (Details) - Schedule of Principal Transactions and Proprietary Trading - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Principal transactions and proprietary trading
Realized and unrealized gain on primarily riskless principal transactions	$ 3,480,000	$ 2,186,000	$ 6,923,000	$ 3,985,000
Realized and unrealized gain on primarily riskless principal transactions, Year over Year Increase	1,294,000		2,938,000
Realized and unrealized gain on portfolio of U.S. government securities	94,000	468,000	157,000	1,469,000
Realized and unrealized gain on portfolio of U.S. government securities, Year over Year Decrease	(374,000)		(1,312,000)
Total Principal transactions and proprietary trading	3,574,000	$ 2,654,000	7,080,000	$ 5,454,000
Total Principal transactions and proprietary trading, Year over Year Increase	$ 920,000		$ 1,626,000