Consolidated Statements of Changes in Shareholders' Equity - 3 months ended Mar. 31, 2016 - 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, 2015	$ 2,143,357	$ 278,252	$ 96	$ 2,438,223	$ (671,872)	$ 98,658
Repurchase of common stock	(14,776)		(1)	(14,775)
Share-based compensation expense	1,293			1,293
Dividends declared on preferred stock	(5,480)				(5,480)
Dividends declared on common stock	(42,538)				(42,538)
Net loss	(71,165)				(71,165)
Other comprehensive income	34,680					34,680
Balance at Mar. 31, 2016	$ 2,045,371	$ 278,252	$ 95	$ 2,424,741	$ (791,055)	$ 133,338