Capital Requirements (Details) - USD ($)	Jul. 01, 2022	Jun. 30, 2022	Jan. 03, 2022	Dec. 31, 2021
MSCO [Member]
Minimum net capital required		$ 1,600,000		$ 2,100,000
Net capital in excess of minimum requirement		$ 28,500,000		$ 34,300,000
Percentage of aggregate debit balance to net capital		37.10%		34.90%
Cash and securities deposits		$ 321,700,000		$ 326,800,000
Minimum cash deposits required		293,000,000.0		294,900,000
Cash deposits in excess of minimum requirement	$ 28,400,000	28,700,000	$ 1,900,000	31,900,000
RISE [Member]
Minimum net capital required		$ 250,000		$ 250,000