Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 1,415	$ 1,784	$ 1,121	$ 2,535
Effective tax rate	23.20%	21.30%	18.90%	21.30%
Excess tax benefits related to stock-based compensation			$ 400
Unrecognized tax benefits	$ 3,800		3,800
Unrecognized tax benefits that would impact effective rate	3,500		3,500
Decrease in unrecognized tax benefits is reasonably possible in next 12 months	100		100
Accrued interest and penalties	$ 300		$ 300		$ 300