Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net income (loss)	$ 8,077	$ (98,486)	$ 10,757
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	29,561	32,414	35,769
Equity-based compensation expense	18,855	19,536	22,044
Bad debt expense	1,359	6,784	2,581
Deferred income tax expense (benefit)	(2,102)	49,387	(183)
Fair value adjustments to contingent consideration	(225)	(533)	(133)
Settlement charge	5,483	55,150
Impairment charge - goodwill		18,633	7,100
Impairment charge - leased assets			6,248
Loss on sale or disposition of assets, net	190	406	1,320
Non-cash lease benefit	(2,928)	(2,847)	(2,108)
Non-cash loss on lease termination			1,175
Non-cash debt charges	863	860	861
Payment of contingent consideration in excess of acquisition date fair value	(360)
Change in estimated tax receivable agreement liability	1,219	(25,298)	(702)
Other, net	(220)	62	47
Changes in operating assets and liabilities
Accounts and notes receivable, current portion	7,505	(8,442)	2,789
Other current and noncurrent assets	712	6,461	5,163
Other current and noncurrent liabilities	1,542	(20,249)	(17,533)
Payments pursuant to tax receivable agreements	(504)	(440)	(3,240)
Income taxes receivable/payable	(6,505)	298	(871)
Deferred revenue, current and noncurrent	(2,870)	(5,432)	58
Net cash provided by operating activities	59,652	28,264	71,142
Cash flows from investing activities:
Purchases of property, equipment and capitalization of software	(6,622)	(6,419)	(9,932)
Other	746	776	(1,568)
Net cash used in investing activities	(5,876)	(5,643)	(11,500)
Cash flows from financing activities:
Payments on debt	(4,600)	(4,600)	(4,600)
Distributions paid to non-controlling unitholders		(8,655)	(13,832)
Dividends and dividend equivalents paid to Class A common stockholders	(599)	(13,553)	(18,186)
Payments related to tax withholding for share-based compensation	(3,075)	(4,367)	(6,524)
Common shares repurchased		(3,408)	(34,101)
Payment of contingent consideration		(1,234)	(1,120)
Other financing	1
Net cash used in financing activities	(8,273)	(35,817)	(78,363)
Effect of exchange rate changes on cash	(1,979)	831	(1,550)
Net increase (decrease) in cash, cash equivalents and restricted cash	43,524	(12,365)	(20,271)
Cash, cash equivalents and restricted cash, beginning of period	125,763	138,128	158,399
Cash, cash equivalents and restricted cash, end of period	169,287	125,763	138,128
Supplemental disclosures of cash flow information:
Cash paid for interest	35,549	34,732	19,826
Net cash paid for income taxes	6,662	$ 7,107	6,530
Cash paid for lease termination	$ 33		$ 1,285