Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Consolidated Statements of Comprehensive Income
Net revenue	$ 174,188	$ 156,241	$ 501,932	$ 457,250
Cost of revenue (exclusive of depreciation and amortization, stated separately below):
Compensation	58,405	58,517	173,563	167,263
Other costs of revenue	6,676	6,658	19,485	17,331
Total cost of revenue	65,081	65,175	193,048	184,594
Selling, general and administrative expenses (exclusive of depreciation and amortization, stated separately below):
Compensation	29,162	32,496	79,419	74,782
Other selling, general and administrative expenses	17,313	13,978	49,492	44,152
Total selling, general and administrative expenses	46,475	46,474	128,911	118,934
Depreciation and amortization of property and equipment	6,070	5,218	17,541	14,864
Amortization of intangible assets	14,747	15,203	45,147	45,618
Transaction-related expenses	773	16	2,165	909
Total operating expenses	133,146	132,086	386,812	364,919
Operating income	41,042	24,155	115,120	92,331
Other expense (income):
Interest expense	9,101	9,625	26,060	40,345
Loss on extinguishment of debt		9,349	3,183	16,417
Other non-operating (income) expense	(449)	(113)	(1,458)	(771)
Total other expense (income)	8,652	18,861	27,785	55,991
Income before income taxes	32,390	5,294	87,335	36,340
Income tax expense	12,918	711	19,800	12,780
Net income	19,472	4,583	67,535	23,560
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	433	14	942	(657)
Change in fair value of derivative instruments	301	(49)	432	(615)
Total other comprehensive income (loss)	734	(35)	1,374	(1,272)
Comprehensive income	$ 20,206	$ 4,548	$ 68,909	$ 22,288
Earnings per share
Basic (in dollars per share)	$ 0.21	$ 0.05	$ 0.74	$ 0.28
Diluted (in dollars per share)	$ 0.20	$ 0.05	$ 0.71	$ 0.27