Divestitures - Summarizes the Assets and Liabilities of the Disposal Group Classified (Details) - Disposal Group, Disposed of by Sale, Not Discontinued Operations - Joint Venture $ in Thousands	Apr. 01, 2024 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	$ 338,226
Investments	9,555
Furniture and equipment, net	5,472
Other assets	44,751
Right-of-use assets	4,422
Intangible assets	3,850
Goodwill	159,826
Total assets sold	615,065
Brokers and dealers	15,271
Brokerage clients	14,110
AP and Accrued Expenses	134,979
Other liabilities	10,370
Accrued compensation and benefits	42,069
Debt	86,200
Liabilities held for sale	302,999
Brokers and Dealers
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Brokers and dealers	31,427
Brokerage Clients
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Brokers and dealers	2,817
Other Fees
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Brokers and dealers	$ 14,719