Cash and Cash Equivalents and Restricted Cash (Tables)

9 Months Ended

Sep. 30, 2025

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, 2025		December 31, 2024
		(In thousands)
Cash and cash equivalents	Cash and cash equivalents	$	473,299	$	544,478
Cash segregated for regulatory    purposes	Cash segregated under federal    regulations		48,351		47,107
Restricted cash deposits with clearing    organizations and broker-dealers	Receivables from broker-dealers,    clearing organizations    and customers		119,942		107,652
Other restricted cash deposits	Prepaid expenses and other assets		1,182		1,222
Total		$	642,774	$	700,459