Consolidated Statements of Shareholders' Equity Statement - 9 months ended Sep. 30, 2015 - USD ($) $ in Thousands	Total	Preferred Stock Including Additional Paid in Capital [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Deficit [Member]	Total Shareholders' Equity [Member]
Balance as of December 31, 2014 at Dec. 31, 2014	$ 607,302	$ 109,658	$ 547	$ 763,935	$ 21,316	$ (288,154)	$ 607,302
Stock issuance		0	0	129			129
Stock Issued During Period, Shares, Restricted Stock Award, Gross			3	2,217
Restricted stock, net of forfeitures							2,220
Adjustments for tax withholding on share-based compensation			1	556			(557)
Amortization of stock issuance costs				(28)			(28)
Common stock repurchased			(43)	(31,008)			(31,051)
Net loss	(15,987)					(15,987)	(15,987)
Dividends on preferred stock						(6,882)	(6,882)
Dividends on common stock						(38,179)	(38,179)
Other comprehensive income	10,793				10,793		10,793
Balance as of September 30, 2015 at Sep. 30, 2015	$ 527,760	$ 109,658	$ 506	$ 734,689	$ 32,109	$ (349,202)	$ 527,760