Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income (loss)	$ (98,486)	$ 10,757	$ (24,620)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	32,414	35,769	31,333
Equity-based compensation expense	19,536	22,044	34,298
Bad debt expense	6,784	2,581	(1,345)
Deferred income tax expense (benefit)	49,387	(183)	(2,528)
Fair value adjustments to contingent consideration	(533)	(133)	309
Settlement charge	55,150
Impairment charge - goodwill	18,633	7,100	5,123
Impairment charge - leased assets		6,248
Loss (gain) on sale or disposition of assets, net	406	1,320	(6)
Non-cash lease benefit	(2,847)	(2,108)	(1,335)
Non-cash loss on lease termination		1,175
Non-cash debt charges	860	861	905
Gain on reduction in tax receivable agreement liability	(25,298)	(702)	382
Other, net	62	47	(113)
Changes in operating assets and liabilities
Accounts and notes receivable, current portion	(8,442)	2,789	3,329
Other current and noncurrent assets	6,461	5,163	(2,090)
Other current and noncurrent liabilities	(20,249)	(17,533)	11,882
Payments pursuant to tax receivable agreements	(440)	(3,240)	(3,444)
Income taxes receivable/payable	298	(871)	(9,775)
Deferred revenue, current and noncurrent	(5,432)	58	137
Net cash provided by operating activities	28,264	71,142	42,442
Cash flows from investing activities:
Purchases of property, equipment and capitalization of software	(6,419)	(9,932)	(15,239)
Acquisitions, net of cash, cash equivalents and restricted cash acquired in 2021 of $14.1 million			(180,002)
Other	776	(1,568)	319
Net cash used in investing activities	(5,643)	(11,500)	(194,922)
Cash flows from financing activities:
Proceeds from the issuance of debt			458,850
Payments on debt	(4,600)	(4,600)	(227,390)
Capitalized debt amendment costs			(3,871)
Distributions paid to non-controlling unitholders	(8,655)	(13,832)	(14,206)
Dividends and dividend equivalents paid to Class A common stockholders	(13,553)	(18,186)	(17,833)
Payments related to tax withholding for share-based compensation	(4,367)	(6,524)	(5,329)
Common shares repurchased	(3,408)	(34,101)
Payment of contingent consideration	(1,234)	(1,120)	(869)
Net cash used in financing activities	(35,817)	(78,363)	189,352
Effect of exchange rate changes on cash	831	(1,550)	300
Net decrease in cash, cash equivalents and restricted cash	(12,365)	(20,271)	37,172
Cash, cash equivalents and restricted cash, beginning of period	138,128	158,399	121,227
Cash, cash equivalents and restricted cash, end of period	125,763	138,128	158,399
Supplemental disclosures of cash flow information:
Cash paid for interest	34,732	19,826	10,794
Net cash paid for income taxes	$ 7,107	6,530	$ 14,908
Cash paid for lease termination		$ 1,285