CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities
Net income	$ 4,896	$ 5,058
Non-cash items included in net income:
Depreciation and amortization of furniture, equipment and leasehold improvements	3,897	3,806
Deferred income taxes	2,485	3,026
Amortization of notes receivable	7,570	6,995
Amortization of debt issuance costs	110	126
Write-off of debt issuance costs	5	0
Provision for (reversal of) credit losses	(1)	94
Share-based compensation	7,773	(2,589)
Amortization of right-of-use lease assets	13,945	13,170
Gain on repurchase of senior secured notes	(51)	0
Decrease (increase) in operating assets:
Deposits with clearing organizations	1,397	(32,600)
Receivable from brokers, dealers and clearing organizations	(128,143)	2,004
Receivable from customers	136,326	(66,723)
Income tax receivable	(17,196)	0
Securities purchased under agreements to resell	0	935
Securities owned	(425,589)	13,232
Notes receivable	(10,948)	(12,111)
Other assets	(8,115)	24,394
Increase (decrease) in operating liabilities:
Drafts payable	21,734	10,020
Payable to brokers, dealers and clearing organizations	(128,603)	(33,590)
Payable to customers	(55,307)	(37,643)
Securities sold under agreements to repurchase	484,306	(106,354)
Securities sold but not yet purchased	18,333	182,694
Accrued compensation	(50,792)	(160,196)
Income tax payable	(4,130)	0
Accounts payable and other liabilities	(24,713)	(45,119)
Cash used in operating activities	(150,811)	(231,371)
Cash flows from investing activities
Purchase of furniture, equipment and leasehold improvements	(9,734)	(2,307)
Proceeds from the settlement of Company-owned life insurance	555	1,191
Cash used in investing activities	(9,179)	(1,116)
Cash flows from financing activities
Cash dividends paid on Class A non-voting and Class B voting common stock	(3,325)	(3,730)
Repurchase of Class A non-voting common stock for cancellation	(7,285)	(46,375)
Payments for employee taxes withheld related to vested share-based awards	(5,907)	(2,251)
Addition to noncontrolling interests	171	0
Redemption of redeemable noncontrolling interests	(83)	0
Repurchase of senior secured notes	(1,000)	0
Increase in bank call loans	94,400	107,800
Cash provided by financing activities	76,971	55,444
Net decrease in cash, cash equivalents and restricted cash	(83,019)	(177,043)
Cash, cash equivalents and restricted cash, beginning of period	137,967	341,524
Cash, cash equivalents and restricted cash, end of period	54,948	164,481
Reconciliation of cash, cash equivalents and restricted cash within the condensed consolidated balance sheets:
Cash and cash equivalents	29,145	36,606
Restricted cash	25,803	127,875
Total cash, cash equivalents and restricted cash	54,948	164,481
Schedule of non-cash financing activities
Employee share plan issuance	9,062	3,809
Supplemental disclosure of cash flow information
Cash paid during the period for interest	30,113	5,776
Cash paid during the period for income taxes, net	$ 20,322	$ 22,750