Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income	$ 1,640	$ 5,290
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,937	6,310
Bad debt expense	287	3,435
Equity-based compensation expense	12,054	2,186
Deferred income tax expense	(320)	2,241
Fair value adjustments to contingent consideration	(280)	(505)
Non-cash lease expense (benefit)	(284)
Other, net	87	(504)
Changes in operating assets and liabilities	711	(4,804)
Net cash provided by operating activities	20,832	13,649
Cash flows from investing activities:
Purchases of property, equipment and capitalization of software	(4,381)	(1,965)
Net cash used in investing activities	(4,381)	(1,965)
Cash flows from financing activities:
Payments on debt	(660)	(660)
Distributions paid to non-controlling unitholders	(2,889)	(2,777)
Dividends and dividend equivalents paid to Class A common stockholders	(4,798)	(4,275)
Payments related to tax withholding for share-based compensation	(5,291)	(2,268)
Net cash used in financing activities	(13,638)	(9,980)
Effect of exchange rate changes on cash	92	(205)
Net increase in cash, cash equivalents and restricted cash	2,905	1,499
Cash, cash equivalents and restricted cash, beginning of period	121,227	103,601
Cash, cash equivalents and restricted cash, end of period	124,132	105,100
Supplemental disclosures of cash flow information:
Cash paid for interest	1,970	2,556
Net cash paid for income taxes	$ 926	$ 1,079