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Capital Requirements (Details) - USD ($) | Apr. 01, 2024 | Mar. 31, 2024 | Jan. 02, 2024 | Dec. 31, 2023
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Capital Requirements (Details) [Line Items] |  |  |  |
Net capital |  | $ 1,000,000 |  |
Percentage of aggregate debit balance to net capital |  | 2.00% |  | 63.42%
Net capital in excess of minimum requirement |  | $ 59,300,000 |  |
Net capital in excess amount |  |  |  | $ 1,800,000
Reserve account excess amount |  |  |  | 26,200,000
Excess deposit requirements amount |  | 1,000,000 |  | 1,000,000
MSCO [Member] |  |  |  |
Capital Requirements (Details) [Line Items] |  |  |  |
Net capital |  | $ 61,000,000 |  |
Percentage of aggregate debit balance to net capital |  | 70.81% |  |
Net capital in excess of minimum requirement |  |  |  | 54,300,000
Minimum net capital required |  | $ 1,700,000 |  |
Net capital in excess amount |  |  |  | 56,100,000
Cash and securities deposits |  | 216,900,000 |  | 273,100,000
Cash deposits in excess of minimum requirement |  | 116,500,000 | $ 3,200,000 | 157,600,000
Minimum cash deposits required |  | 100,400,000 |  | 115,500,000
Reserve account excess amount |  | 26,700,000 |  |
Excess deposit requirements amount |  | 190,200,000 |  | 246,900,000
RISE [Member] |  |  |  |
Capital Requirements (Details) [Line Items] |  |  |  |
Minimum net capital required |  | 250,000 |  | 250,000
Subsequent Event [Member] | MSCO [Member] |  |  |  |
Capital Requirements (Details) [Line Items] |  |  |  |
Cash deposits in excess of minimum requirement | $ 2,700,000 |  |  |
Maximum [Member] |  |  |  |
Capital Requirements (Details) [Line Items] |  |  |  |
Reserve account excess amount |  | 1,200,000 |  | 1,200,000
Maximum [Member] | RISE [Member] |  |  |  |
Capital Requirements (Details) [Line Items] |  |  |  |
Net capital in excess amount |  | 1,300,000 |  | 1,300,000
Minimum [Member] |  |  |  |
Capital Requirements (Details) [Line Items] |  |  |  |
Reserve account excess amount |  | 200,000 |  | 200,000
Minimum [Member] | RISE [Member] |  |  |  |
Capital Requirements (Details) [Line Items] |  |  |  |
Net capital in excess amount |  | $ 1,000,000 |  | $ 1,000,000

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- Definition Minimum amount of net capital required to be maintained by broker-dealer subsidiary to engage in security transaction, calculated under Aggregate Indebtedness Standard. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Rule 15c3-1 -Number 240 -Section 15c3-1 -Publisher SEC + Details
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