Consolidated Statements of Changes in Shareholders' Equity - 9 months ended Sep. 30, 2015 - USD ($) $ in Thousands	Total	7.625% Series A Cumulative Redeemable Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income
Balance at Dec. 31, 2014	$ 2,420,796	$ 278,252	$ 97	$ 2,454,718	$ (518,036)	$ 205,765
Repurchase of common stock	(6,280)			(6,280)
Share based compensation expense	3,045			3,045
Dividends declared on preferred stock	(16,441)				(16,441)
Dividends declared on common stock	(140,338)				(140,338)
Net loss	(93,871)				(93,871)
Other comprehensive income	25,531					25,531
Balance at Sep. 30, 2015	$ 2,192,442	$ 278,252	$ 97	$ 2,451,483	$ (768,686)	$ 231,296