CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities
Net income	$ 18,676	$ 9,723
Non-cash items included in net income:
Depreciation and amortization of furniture, equipment and leasehold improvements	6,585	5,717
Deferred income taxes	10,460	(5,890)
Amortization of notes receivable	11,600	10,480
Amortization of debt issuance costs	165	189
Write-off of debt issuance costs	5	0
Provision for credit losses	17	61
Share-based compensation	9,662	(1,152)
Amortization of right-of-use lease assets	20,687	20,041
Gain on repurchase of senior secured notes	(51)	0
Decrease (increase) in operating assets:
Deposits with clearing organizations	(11,236)	(28,677)
Receivable from brokers, dealers and clearing organizations	(53,297)	(7,304)
Receivable from customers	115,433	42,676
Income tax receivable	(17,740)	0
Securities purchased under agreements to resell	0	935
Securities owned	(355,351)	(28,173)
Notes receivable	(15,375)	(13,702)
Other assets	(5,733)	34,278
Increase (decrease) in operating liabilities:
Drafts payable	14,521	9,644
Payable to brokers, dealers and clearing organizations	(199,662)	71,389
Payable to customers	(92,636)	(75,846)
Securities sold under agreements to repurchase	519,055	6,710
Securities sold but not yet purchased	(7,191)	22,935
Accrued compensation	(14,462)	(135,341)
Income tax payable	(4,130)	0
Accounts payable and other liabilities	(34,228)	(21,797)
Cash used in operating activities	(84,226)	(83,104)
Cash flows from investing activities
Purchase of furniture, equipment and leasehold improvements	(12,470)	(11,627)
Proceeds from the settlement of Company-owned life insurance	2,161	1,191
Cash used in investing activities	(10,309)	(10,436)
Cash flows from financing activities
Cash dividends paid on Class A non-voting and Class B voting common stock	(4,904)	(5,433)
Issuance of Class A non-voting common stock	54	65
Repurchase of Class A non-voting common stock for cancellation	(31,241)	(59,554)
Payments for employee taxes withheld related to vested share-based awards	(5,907)	(2,283)
Addition (Distribution) to noncontrolling interests	171	(21)
Redemption of redeemable noncontrolling interests	(83)	0
Repurchase of senior secured notes	(1,000)	0
Increase (Decrease) in bank call loans	56,200	(15,900)
Cash provided by (used in) financing activities	13,290	(83,126)
Net decrease in cash, cash equivalents and restricted cash	(81,245)	(176,666)
Cash, cash equivalents and restricted cash, beginning of period	137,967	341,524
Cash, cash equivalents and restricted cash, end of period	56,722	164,858
Reconciliation of cash, cash equivalents and restricted cash within the condensed consolidated balance sheets:
Cash and cash equivalents	30,773	36,578
Restricted cash	25,949	128,280
Total cash, cash equivalents and restricted cash	56,722	164,858
Schedule of non-cash financing activities
Employee share plan issuance	9,376	4,288
Supplemental disclosure of cash flow information
Cash paid during the period for interest	51,685	14,184
Cash paid during the period for income taxes, net	$ 20,666	$ 25,683