Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 3,872	$ 3,059
Effective tax rate (as a percent)	35.40%	37.60%
Federal statutory rate (as a percent)	35.00%
Reduction in effective income tax rate (as a percent)	2.20%
Deferred tax asset, valuation allowance	$ 1,383