Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income	$ 39,299	$ 32,217
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	15,252	15,678
Bad debt expense	1,257	836
(Gain) loss on sale or disposition of assets and sublease, net	(146)	3,859
Equity-based compensation expense	6,141	2,161
Deferred income tax expense	3,503	3,822
Fair value adjustments to contingent consideration	(860)	250
Payments pursuant to tax receivable agreements	(5,047)	(7,296)
Other, net	902	888
Changes in operating assets and liabilities	(3,279)	1,025
Net cash provided by operating activities	57,022	53,440
Cash flows from investing activities:
Purchases of property and equipment and capitalization of developed software and trademark costs	(5,316)	(1,781)
Acquisitions, net of cash acquired of $362 and $0, respectively	(25,888)
Net cash used in investing activities	(31,204)	(1,781)
Cash flows from financing activities:
Payments on debt	(2,382)	(1,772)
Distributions paid to non-controlling unitholders	(11,259)	(14,213)
Dividends and dividend equivalents paid to Class A common stockholders	(10,758)	(9,607)
Payment of payroll taxes related to net settled restricted stock units	(895)	(816)
Payment of contingent consideration	(50)
Net cash used in financing activities	(25,344)	(26,408)
Effect of exchange rate changes on cash	(18)	1,076
Net increase in cash and cash equivalents	456	26,327
Cash and cash equivalents, beginning of year	50,807	57,609
Cash and cash equivalents, end of period	51,263	83,936
Supplemental disclosures of cash flow information:
Cash paid for interest	8,487	7,477
Net cash paid for income taxes	4,802	8,619
Schedule of non-cash investing and financing activities:
Increase in accounts payable for capitalization of trademark costs and purchases of property, equipment and software	$ 522	$ 310