Capital Requirements (Details) - USD ($)	Oct. 02, 2023	Sep. 30, 2023	Dec. 31, 2022
Capital Requirements (Details) [Line Items]
Net capital		$ 1,000,000
Percentage of aggregate debit balance to net capital		2.00%	44.49%
Net capital in excess of minimum requirement		$ 52,300,000
Net capital in excess amount			$ 1,400,000
Reserve account excess amount			11,900,000
Excess deposit requirements amount		1,000,000	264,300,000
Maximum [Member]
Capital Requirements (Details) [Line Items]
Reserve account excess amount		1,200,000
Minimum [Member]
Capital Requirements (Details) [Line Items]
Reserve account excess amount		200,000
MSCO [Member]
Capital Requirements (Details) [Line Items]
Net capital		$ 54,100,000
Percentage of aggregate debit balance to net capital		60.50%
Net capital in excess of minimum requirement			29,200,000
Minimum net capital required		$ 1,800,000
Net capital in excess amount			30,600,000
Cash and securities deposits		236,200,000	276,200,000
Cash deposits in excess of minimum requirement		118,100,000	135,200,000
Minimum cash deposits required		118,100,000	141,000,000
Reserve account excess amount		26,100,000
Excess deposit requirements amount		210,100,000
MSCO [Member] | Subsequent Event [Member]
Capital Requirements (Details) [Line Items]
Cash deposits in excess of minimum requirement	$ 2,000,000
RISE [Member]
Capital Requirements (Details) [Line Items]
Minimum net capital required		250,000	250,000
RISE [Member] | Maximum [Member]
Capital Requirements (Details) [Line Items]
Net capital in excess amount		1,200,000	1,200,000
RISE [Member] | Minimum [Member]
Capital Requirements (Details) [Line Items]
Net capital in excess amount		$ 1,000,000	$ 900,000