Consolidated Statements of Stockholders' Equity - 3 months ended Mar. 31, 2016 - USD ($) shares in Thousands, $ in Thousands	Total	Series A Preferred Stock	Series B Preferred Stock	Preferred Stock Series A Preferred Stock	Preferred Stock Series B Preferred Stock	Additional Paid-in Capital	Additional Paid-in Capital Series A Preferred Stock	Additional Paid-in Capital Series B Preferred Stock	Additional Paid-in Capital Common Stock	Common Stock	Accumulated Deficit	Accumulated Deficit Series A Preferred Stock	Accumulated Deficit Series B Preferred Stock	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2015				2,181	5,650					36,682
Beginning balance at Dec. 31, 2015	$ 1,225,166			$ 2	$ 6	$ 2,559,361	$ 53,172	$ 136,547	$ 2,369,642	$ 37	$ (1,266,938)			$ (67,302)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred stock dividends		$ (1,124)	$ (2,781)									$ (1,124)	$ (2,781)
Common stock dividends	(36,393)										(36,393)
Stock based compensation, net of withholding requirements (in shares)										10
Stock based compensation, net of withholding requirements	221					221			221
Net loss	(279,475)										(279,475)
Other comprehensive income	190,021													190,021
Ending balance (in shares) at Mar. 31, 2016				2,181	5,650					36,692
Ending balance at Mar. 31, 2016	$ 1,095,635			$ 2	$ 6	$ 2,559,582	$ 53,172	$ 136,547	$ 2,369,863	$ 37	$ (1,586,711)			$ 122,719