Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Preferred Shares	Preferred Shares Paid-In Capital	Common Shares	Common Shares Paid-In Capital	Accumulated Deficit	Noncontrolling interests
Balance at Dec. 31, 2014	$ 2,488,048		$ 378,983		$ 2,385,078	$ (376,182)	$ 100,169
Balance (in shares) at Dec. 31, 2014		14,950,000		100
Increase (Decrease) in Shareholders' Equity
Capital contributions	2,455						2,455
Net income (loss)	(8,268)					508	(8,776)
Distributions declared on preferred shares	(13,782)					(13,782)
Distributions to Parent	(89,453)					(89,453)
Balance at Jun. 30, 2015	2,377,123		378,983		2,385,078	(480,786)	93,848
Balance (in shares) at Jun. 30, 2015		14,950,000		100
Increase (Decrease) in Shareholders' Equity
Cumulative effect adjustment from adoption of accounting guidance	(1,877)					(1,877)
Balance at Dec. 31, 2015	1,950,990		378,983		2,385,078	(895,950)	82,879
Balance (in shares) at Dec. 31, 2015		14,950,000		100
Increase (Decrease) in Shareholders' Equity
Capital contributions	5,049						5,049
Capital distributions	(6,849)						(6,849)
Net income (loss)	(170,649)					(153,833)	(16,816)
Distributions declared on preferred shares	(13,782)					(13,782)
Distributions to Parent	(194,851)					(194,851)
Balance at Jun. 30, 2016	$ 1,569,908		$ 378,983		$ 2,385,078	$ (1,258,416)	$ 64,263
Balance (in shares) at Jun. 30, 2016		14,950,000		100