Income Taxes - Reconciliation of Income Tax from Statutory Tax Rate to Effective Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Tax provision at federal statutory rate	$ 22,648	$ 39,207	$ (3,923)
Globalization initiative	6,290	9,039	9,244
Acquisition related charges	5,167
State income tax	3,243	4,264	827
Valuation allowance	1,494	(3,739)	793
Income tax reserves	759	2,301	657
Compensation expense	(8,013)	(2,115)	1,428
Income tax credits and incentives	(3,426)	(1,754)	(2,198)
Non-deductible meals and entertainment	1,013	638	521
Foreign earnings taxed as non-United States rates	605	(494)	(199)
Other	(498)	(618)	(864)
Total income tax (benefit) expense	$ 29,282	$ 46,729	$ 6,286