Capital Requirements (Details) - USD ($)	Oct. 03, 2022	Sep. 30, 2022	Jan. 03, 2022	Dec. 31, 2021
Net capital in excess amount		$ 1,700,000
Percentage of aggregate debit balance to net capital		38.70%
Net capital		$ 1,000,000
MSCO [Member]
Net capital in excess amount		32,900,000
Minimum net capital required				$ 2,100,000
Net capital in excess of minimum requirement		$ 31,200,000		$ 34,300,000
Percentage of aggregate debit balance to net capital		2.00%		34.90%
Cash and securities deposits		$ 295,100,000		$ 326,800,000
Minimum cash deposits required		265,900,000		294,900,000
Cash deposits in excess of minimum requirement	$ 13,300,000	29,200,000	$ 1,900,000	31,900,000
Net capital				36,400,000
RISE [Member]
Minimum net capital required		250,000		250,000
RISE [Member] | Minimum [Member]
Net capital in excess amount		900,000		1,400,000
RISE [Member] | Maximum [Member]
Net capital in excess amount		$ 1,100,000		$ 1,700,000