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 (loss)	$ 2,430	$ 19,444
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	20,336	19,212
Impairment charge	989
Deferred income taxes	(169)	(3,151)
Non-cash interest	264	1,076
Amortization of syndication contracts	358	348
Payments on syndication contracts	(366)	(304)
Non-cash stock-based compensation	17,053	7,995
(Gain) loss on marketable securities	94	473
(Gain) loss on disposal of property and equipment	(11)	(599)
(Gain) loss on debt extinguishment	1,556
Change in fair value of contingent consideration	(8,939)	6,810
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	16,261	22,296
(Increase) decrease in prepaid expenses and other current assets, operating leases right of use asset and other assets	(7,199)	(183)
Increase (decrease) in accounts payable, accrued expenses and other liabilities	26,460	4,725
Net cash provided by operating activities	69,117	78,142
Cash flows from investing activities:
Proceeds from sale of property and equipment and intangibles	83	2,671
Purchases of property and equipment	(19,881)	(7,882)
Purchase of a business, net of cash acquired	(6,930)
Investment in variable interest entities, net of cash consolidated		(5,164)
Purchases of marketable securities	(11,355)	(92,480)
Proceeds from sale of marketable securities	38,093	46,868
Purchases of investments	(300)
Issuance of loan receivable	(13,636)
Net cash used in investing activities	(13,926)	(55,987)
Cash flows from financing activities:
Proceeds from stock option exercises	554	218
Tax payments related to shares withheld for share-based compensation plans	(158)	(267)
Payments on debt	(214,495)	(2,501)
Dividends paid	(13,182)	(6,415)
Distributions to noncontrolling interest	(3,380)
Repurchase of Class A common stock		(11,280)
Payment of contingent consideration	(35,113)	(65,340)
Pricipal payments under finance lease obligation	(113)	(72)
Proceeds from borrowings on debt	212,420
Payments for debt issuance costs	(1,777)
Net cash used in financing activities	(55,244)	(85,657)
Effect of exchange rates on cash, cash equivalents and restricted cash	(2)	(1)
Net increase (decrease) in cash, cash equivalents and restricted cash	(55)	(63,503)
Cash, cash equivalents and restricted cash:
Beginning	111,444	185,843
Ending	111,389	122,340
Cash payments for:
Interest	12,524	6,149
Income taxes	5,929	11,456
Supplemental disclosures of non-cash investing and financing activities:
Capital expenditures financed through accounts payable, accrued expenses and other liabilities	1,064	$ 2,377
Fair value of contingent consideration related to acquisition and purchase of noncontrolling interest	1,854
Fair value of put and call option of redeemable noncontrolling interest	47,300
Dividends payable	$ 100