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 (loss)	$ (302)	$ 10,354
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	12,980	12,658
Deferred income taxes	(129)	(3,213)
Non-cash interest	179	711
Amortization of syndication contracts	240	231
Payments on syndication contracts	(241)	(234)
Non-cash stock-based compensation	10,021	5,209
(Gain) loss on marketable securities	61
(Gain) loss on disposal of property and equipment	18	(638)
(Gain) loss on debt extinguishment	1,556
Change in fair value of contingent consideration	(2,942)	6,076
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	17,480	17,588
(Increase) decrease in prepaid expenses and other current assets, operating leases right of use asset and other assets	(3,297)	(1,252)
Increase (decrease) in accounts payable, accrued expenses and other liabilities	11,467	15,416
Net cash provided by operating activities	47,091	62,906
Cash flows from investing activities:
Proceeds from sale of property and equipment and intangibles	50	2,671
Purchases of property and equipment	(14,858)	(3,209)
Purchase of a business, net of cash acquired	(6,930)
Purchases of marketable securities	(10,172)	(87,239)
Proceeds from sale of marketable securities	28,093	10,499
Purchases of investments	(200)
Issuance of loan receivable	(8,086)
Net cash used in investing activities	(12,103)	(77,278)
Cash flows from financing activities:
Proceeds from stock option exercises	554	218
Tax payments related to shares withheld for share-based compensation plans	(95)	(267)
Payments on debt	(213,245)	(1,500)
Dividends paid	(8,782)	(4,291)
Distributions to noncontrolling interest	(3,380)
Repurchase of Class A common stock		(11,280)
Payment of contingent consideration	(31,710)	(43,606)
Pricipal payments under finance lease obligation	(76)	(39)
Proceeds from borrowings on debt	212,419
Payments for debt issuance costs	(1,777)
Net cash used in financing activities	(46,092)	(60,765)
Effect of exchange rates on cash, cash equivalents and restricted cash	1	(6)
Net increase (decrease) in cash, cash equivalents and restricted cash	(11,103)	(75,143)
Cash, cash equivalents and restricted cash:
Beginning	111,444	185,843
Ending	100,341	110,700
Cash payments for:
Interest	8,155	3,459
Income taxes	3,582	7,438
Supplemental disclosures of non-cash investing and financing activities:
Capital expenditures financed through accounts payable, accrued expenses and other liabilities	2,097	$ 1,150
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