Income Taxes - Components (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
Components of income tax expense (benefit)
Income Tax Expense (Benefit)	$ 6,985	$ 2,017	$ 10,927	$ 3,074
Effective tax rate (as a percent)	35.10%	35.70%	35.20%	36.00%
Deferred Tax Assets, Net	$ 12,467		$ 12,467		$ 11,266