Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Taxes [Abstract]
Effective tax rate	35.70%		36.70%
Income tax expense	$ 9,560	$ 0	$ 18,931	$ 0
Operating Loss Carryforwards [Line Items]
Open tax year			2013
Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	134,800		$ 134,800
State [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 166,500		$ 166,500