Income Taxes (Summary of Income Tax Benefit (Provision)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Taxes [Abstract]
Total current income tax (provision) benefit	$ (742)	$ (617)	$ (1,343)	$ (1,830)
Total deferred income tax (provision) benefit	(7,738)	(1,662)	(20,812)	(4,203)
Income tax (provision) benefit	$ (8,480)	$ (2,279)	$ (22,155)	$ (6,033)