Consolidated Statements of Shareholders' Equity Statement - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Total	Preferred Stock	Preferred Stock Including Additional Paid in Capital	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive (Loss) Income	Accumulated Deficit
Balance, Preferred stock, Shares outstanding at Dec. 31, 2016	4,571,937	4,571,937
Balance, Common stock, shares outstanding at Dec. 31, 2016	49,153,463			49,153,463
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Shares, New Issues		325,201		18,680
Stock Issued During Period, Shares, Restricted Stock Award, Gross				108,446
Shares Paid for Tax Withholding for Share Based Compensation				(77,567)
Balance, Preferred stock, Shares outstanding at Mar. 31, 2017	4,897,138	4,897,138
Balance, Common stock, shares outstanding at Mar. 31, 2017	49,203,022			49,203,022
Balance at Dec. 31, 2016	$ 467,184		$ 110,005	$ 492	$ 727,369	$ (32,609)	$ (338,073)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock issuance	7,631		7,504	0	127
Restricted stock granted, net of amortization	537			1	536
Adjustments for tax withholding on share-based compensation	(521)			(1)	(520)
Stock issuance costs	(45)		(36)		(9)
Net income	9,051						9,051
Dividends on preferred stock	(2,435)						(2,435)
Dividends on common stock	(8,857)						(8,857)
Other comprehensive income	19,977					19,977
Balance at Mar. 31, 2017	$ 492,522		$ 117,473	$ 492	$ 727,503	$ (12,632)	$ (340,314)