Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net (loss) income	$ (145,784)	$ 331,698
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization	15,809	12,924
Provision for doubtful accounts	1,276	755
Share-based compensation	31,215	14,134
Fair value adjustments, non-cash	(13,572)	(10,046)
Non-cash interest and other	(1,237)	(9,091)
Effect of foreign currency on operations	298	(1,486)
Income from equity investments	(3,376)	(23)
Dividends from equity investments	1,908	610
Deferred income taxes	(95,342)	51,242
Loss on disposal of fixed assets	122	0
Gain on extinguishment of loan	(1,102)	(6,509)
Loss on extinguishment of debt	0	919
Gain on equity investment	(6,790)	(3,544)
Income allocated and fair value adjustment for mandatorily redeemable noncontrolling interests	436	347
Change in operating assets and liabilities:
Amounts due to/from clearing brokers	(65,644)	(424,062)
Securities and other investments owned	390,147	(316,181)
Securities borrowed	(323,108)	(374,565)
Accounts receivable and advances against customer contracts	5,308	808
Prepaid expenses and other assets	(12,598)	(25,870)
Accounts payable, accrued payroll and related expenses, accrued expenses and other liabilities	(138,605)	(22,983)
Amounts due to/from related parties and partners	1,876	155
Securities sold, not yet purchased	(23,220)	261,476
Deferred revenue	6,568	(3,158)
Securities loaned	325,516	374,549
Net cash used in operating activities	(49,899)	(147,901)
Cash flows from investing activities:
Purchases of loans receivable	(199,109)	(87,309)
Repayments of loans receivable	241,695	95,522
Repayment of loan participations sold	0	(10,772)
Acquisition of businesses, net of $27,740 and $34,924 cash acquired for 2022 and 2021, respectively	(38,383)	(390)
Purchases of property, equipment and intangible assets	(896)	(288)
Proceeds from sale of property, equipment and intangible assets	2	0
Investment of subsidiaries initial public offering proceeds into trust account	0	(345,000)
Purchase of equity and other investments	(2,786)	(10,485)
Net cash provided by (used in) investing activities	523	(358,722)
Cash flows from financing activities:
Repayment of notes payable	(357)	(37,610)
Repayment of term loan	(54,316)	(11,484)
Proceeds from term loan	75,000	200,000
Proceeds from issuance of senior notes	35,874	475,698
Redemption of senior notes	0	(128,156)
Payment of debt issuance and offering costs	(450)	(15,661)
Payment of contingent consideration	(451)	(411)
Payment of employment taxes on vesting of restricted stock	(6,440)	(10,370)
Common dividends paid	(62,039)	(181,269)
Preferred dividends paid	(4,004)	(3,538)
Distributions to noncontrolling interests	(2,414)	(14,792)
Contributions from noncontrolling interests	8,527	10,650
Proceeds from initial public offering of subsidiaries	0	345,000
Proceeds from issuance of common stock	0	64,713
Proceeds from issuance of preferred stock	639	8,281
Net cash (used in) provided by financing activities	(10,431)	701,051
(Decrease) increase in cash, cash equivalents and restricted cash	(59,807)	194,428
Effect of foreign currency on cash, cash equivalents and restricted cash	(3,027)	(534)
Net (decrease) increase in cash, cash equivalents and restricted cash	(62,834)	193,894
Cash, cash equivalents and restricted cash, beginning of period	279,860	104,837
Cash, cash equivalents and restricted cash, end of period	217,026	298,731
Supplemental disclosures:
Interest paid	83,102	66,359
Taxes paid	$ 45,343	$ 63,987