Cash and Cash Equivalents and Restricted Cash (Tables)

9 Months Ended

Sep. 30, 2024

Cash and Cash Equivalents [Abstract]

Summary of Reconciliation of Cash and Cash Equivalents with Restricted or Segregated Cash

The following table provides a reconciliation of cash and cash equivalents together with restricted or segregated cash as reported within the Consolidated Statements of Financial Condition to the sum of the same such amounts shown in the Consolidated Statements of Cash Flows:

		As of
	Statement of Financial Condition Location	September 30, 2024		December 31, 2023
		(In thousands)
Cash and cash equivalents	Cash and cash equivalents	$	446,347	$	451,280
Cash segregated for regulatory    purposes	Cash segregated under federal    regulations		46,657		45,122
Cash deposits with clearing organizations    and broker-dealers	Receivables from broker-dealers,    clearing organizations    and customers		106,829		115,151
Other cash deposits	Prepaid expenses and other assets		172		119
Total		$	600,005	$	611,672