Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense	$ 3,849	$ 6,267
Effective income tax rate	46.10%	37.70%
Additional income tax expense due to implementation of ASU 2016-09	$ 500