Revenue Recognition (Details) - Schedule of represents the loss related to principal transactions - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Principal transactions and proprietary trading
Realized and unrealized gain on primarily riskless principal transactions	$ 2,186,000	$ 1,698,000	$ 3,985,000	$ 3,616,000
Realized and unrealized gain on primarily riskless principal transactions	488,000		369,000
Unrealized gain (loss) on portfolio of U.S. government securities	468,000	(617,000)	1,469,000	(2,802,000)
Unrealized gain (loss) on portfolio of U.S. government securities	1,085,000		4,271,000
Total Principal transactions and proprietary trading	2,654,000	$ 1,081,000	5,454,000	$ 814,000
Total Principal transactions and proprietary trading	$ 1,573,000		$ 4,640,000