Income Taxes (Summary of Income Tax Benefit (Provision)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Taxes [Abstract]
Total current income tax (provision) benefit	$ (617)	$ 496	$ (1,830)	$ (772)
Total deferred income tax (provision) benefit	(1,662)	(9,976)	(4,203)	(19,380)
Income tax (provision) benefit	$ (2,279)	$ (9,480)	$ (6,033)	$ (20,152)