Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (918)	$ 919	$ (1,389)	$ 1,462
Income tax expense increase (decrease)	$ 1,800		$ (2,900)
Effective tax rate	20.20%	21.30%	21.50%	18.40%
Effective tax rate, increase for period (as a percent)			3.10%