Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ (30,240)	$ 18,319
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	22,236	19,154
Impairment charge - leased assets		7,902
Impairment charge - goodwill	5,123
Bad debt expense	(208)	4,024
Loss on early extinguishment of debt	264
Equity-based compensation expense	27,315	8,347
Deferred income tax expense (benefit)	(1,869)	1,889
Fair value adjustments to contingent consideration	330	(105)
Non-cash lease expense (benefit)	(984)
Other, net	453	209
Changes in operating assets and liabilities	(5,776)	(16,268)
Net cash provided by operating activities	16,644	43,471
Cash flows from investing activities:
Purchases of property, equipment and capitalization of software	(12,069)	(4,575)
Acquisitions, net of cash, cash equivalents and restricted cash acquired of $14.1 million and $0.9 million, respectively	(180,402)	(10,627)
Net cash used in investing activities	(192,471)	(15,202)
Cash flows from financing activities:
Proceeds from the issuance of debt	458,850
Payments on debt	(226,240)	(1,986)
Capitalized debt amendment costs	(3,871)
Distributions paid to non-controlling unitholders	(10,780)	(10,566)
Dividends and dividend equivalents paid to Class A common stockholders	(13,488)	(12,250)
Payments related to tax withholding for share-based compensation	(5,329)	(2,268)
Net cash provided by (used in) financing activities	199,142	(27,070)
Effect of exchange rate changes on cash	54	(30)
Net increase in cash, cash equivalents and restricted cash	23,369	1,169
Cash, cash equivalents and restricted cash, beginning of period	121,227	103,601
Cash, cash equivalents and restricted cash, end of period	144,596	104,770
Supplemental disclosures of cash flow information:
Cash paid for interest	3,962	6,638
Net cash paid for income taxes	$ 11,452	3,963
Schedule of non-cash investing activities:
Class A shares issued as consideration for acquisitions		$ 8,800