Income Taxes (Details Textuals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Income tax (benefit) provision	$ (1,896)	$ 17,606	$ 29,182	$ 39,236
Effective tax rate	(2.70%)	25.00%	14.50%	23.50%
Federal Statutory Income Tax Rate	35.00%
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	$ 17,400
Unrecognized tax benefits	11,300		$ 11,300
Accrued interest and penalties	$ 1,100		$ 1,100