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 Tax Contingency [Line Items]
U.S. Federal tax rate			35.00%	35.00%
Income tax expense (benefit)	$ 7,652	$ 7,668	$ 5,117	$ 382
Effective tax rate	(40.10%)	33.20%	(20.80%)	189.60%
Goodwill write-off	$ 42,000	$ 0	$ 42,000	$ 0
Discrete tax charges related to state income taxes percent				174.70%
State and Local Jurisdiction
Income Tax Contingency [Line Items]
Decrease in reserve for unrecognized state income tax benefits under appeal	300
Current state income tax payable	$ 300		$ 300