CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021		Dec. 31, 2020
Cash flows from operating activities
Net income	$ 32,110	$ 158,964		$ 122,986
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation and amortization of furniture, equipment and leasehold improvements	7,605	7,994		8,143
Deferred income taxes	(14,616)	(792)		21,336
Amortization of notes receivable	13,741	13,427		11,763
Amortization of debt issuance costs	248	250		206
Write-off of debt issuance costs	61	0		341
Provision for (reversal of) credit losses	(2,955)	2,896		(41)
Share-based compensation	15,914	31,138		16,220
Amortization of right-of-use lease assets	26,804	26,125		25,150
Gain on repurchase of senior secured notes	(235)	0		(86)
Decrease (increase) in operating assets:
Deposits with clearing organizations	(10,723)	16,375		(34,928)
Receivable from brokers, dealers and clearing organizations	(36,175)	33,592		(40,201)
Receivable from customers	21,641	(113,511)		(313,860)
Income tax receivable	0	0		5,170
Securities purchased under agreements to resell	935	(935)		0
Securities owned	135,910	(23,987)		189,202
Notes receivable	(17,253)	(21,249)		(14,254)
Other assets	16,412	65,814		(105,435)
Increase (decrease) in operating liabilities:
Payable to brokers, dealers and clearing organizations	127,949	162,146		(261,064)
Payable to customers	(483)	(45,849)		168,072
Securities sold under agreements to repurchase	(116,313)	(65,116)		55,173
Securities sold but not yet purchased	(19,190)	(54,213)		25,600
Accrued compensation	(107,350)	23,238		82,367
Income tax payable	(9,406)	3,810		9,726
Accounts payable and other liabilities	(139)	7,669		(25,645)
Cash provided by/(used in) operating activities	64,492	227,786		(54,059)
Cash flows from investing activities
Purchase of furniture, equipment and leasehold improvements	(16,311)	(8,268)		(4,528)
Proceeds from the settlement of Company-owned life insurance	2,174	2,001		587
Cash used in investing activities	(14,137)	(6,267)		(3,941)
Cash flows from financing activities
Cash dividends paid on Class A non-voting and Class B voting common stock	(7,044)	(19,444)		(18,578)
Issuance of Class A non-voting common stock	127	58		56
Repurchase of Class A non-voting common stock for cancellation	(60,636)	(7,737)		(15,048)
Payments for employee taxes withheld related to vested share-based awards	(2,283)	(4,967)		(5,839)
Issuance of senior secured notes		0		125,000
Payment of Company sponsored Initial Public Offering costs	0	(454)		0
Contributions from noncontrolling interests	0	3,147		0
Proceeds from Company sponsored Initial Public Offering	0	126,500		0
Distribution to noncontrolling interests	(90)	0		0
Redemption on redeemable noncontrolling interests	(103,536)	0		0
Redemption of senior secured notes	0	0		(148,574)
Repurchase of senior secured notes	(10,950)	0		(1,426)
Debt issuance costs	0	(22)		(1,210)
Debt redemption costs	0	0		(2,507)
(Decrease)/increase in bank call loans, net	(69,500)	(12,500)		82,000
Cash provided by/(used in) financing activities	(253,912)	84,581		13,874
Net increase/(decrease) in cash and cash equivalents and restricted cash	(203,557)	306,100		(44,126)
Cash and cash equivalents and restricted cash, beginning of year	341,524	35,424		79,550
Cash and cash equivalents and restricted cash, end of year	137,967	341,524		35,424
Reconciliation of cash and cash equivalents and restricted cash within the consolidated balance sheet:
Cash and cash equivalents	112,433	213,759	[1]	35,424
Restricted cash	25,534	127,765	[1]	0
Total cash and cash equivalents and restricted cash	137,967	341,524		35,424
Schedule of non-cash financing activities
Employee share plan issuance	4,288	7,361		12,167
Supplemental disclosure of cash flow information
Cash paid during the year for interest	22,810	10,089		19,013
Cash paid during the year for income taxes, net	$ 37,512	$ 62,378		$ 11,191

[1] (1) Certain prior period reported amounts were reclassified to conform to the current period presentation, See Note 2.