Earnings Per Share Calculation of Basic and Diluted EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Loss from continuing operations, as reported	$ (29,823)	$ (152,628)	$ (131,035)	$ (137,526)
Less: Dividends distributed to Warrants	21	40	46	88
Less: Undistributed earnings allocated to Warrants	0	0	0	0
Net Income (Loss) Available to Common Stockholders, Basic, Continuing Operations	(29,844)	(152,668)	(131,081)	(137,614)
Add: Undistributed earnings allocated to dilutive securities	0	0	0	0
Net Income (Loss) Available to Common Stockholders, Diluted, Continuing Operations	(29,844)	(152,668)	(131,081)	(137,614)
Net Income (Loss) Available to Common Stockholders, Basic and Diluted, Discontinued Operations			15,039	(12,944)
Net loss attributable to common shareholders for basic EPS	(30,423)	(161,603)	(116,042)	(150,558)
Net loss attributable to common shareholders for diluted EPS	$ (30,423)	$ (161,603)	$ (116,042)	$ (150,558)
Weighted average shares outstanding - basic (shares)	87,058	91,676	86,846	92,083
Impact of dilutive securities (shares)	0	0	0	0
Weighted average shares outstanding - diluted (shares)	87,058	91,676	86,846	92,083
Continuing Operations	$ (0.34)	$ (1.66)	$ (1.51)	$ (1.50)
Discontinued Operations	(0.01)	(0.10)	0.17	(0.14)
Net Loss Per Common Share	(0.35)	(1.76)	(1.34)	(1.64)
Continuing Operations	(0.34)	(1.66)	(1.51)	(1.50)
Discontinued Operations	(0.01)	(0.10)	0.17	(0.14)
Net Loss Per Common Share	$ (0.35)	$ (1.76)	$ (1.34)	$ (1.64)