CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands	Total	Series A Preferred Stock [Member]	Series B Preferred Stock [Member]	Series C Preferred Stock [Member]	Series D Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Shareholders' Equity [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2010	$ 131,033					$ 9,570	$ 89,446	$ 13,327	$ (1,062)	$ 129,386	$ 1,647
Beginning Balance at Dec. 31, 2010		17,244	861
Net income	19,440							19,440		19,440
Other comprehensive income	2,857								2,857	2,857
Restricted stock and share-based compensation	919					64	855			919
Issuance of common stock	30,226					2,519	27,707			30,226
Issuance (redemption) of preferred stock	39,832	(17,796)	(889)	20,582	37,935					39,832
Conversion of preferred stock to common stock
Issuance of common stock	30,226					2,519	27,707			30,226
Preferred stock dividends and discount accretion	(792)	552	28					(1,372)		(792)
Equity contribution for noncontrolling interest	1						2			2	(1)
Ending Balance at Dec. 31, 2011	223,516					12,153	118,010	31,395	1,795	221,870	1,646
Ending Balance at Dec. 31, 2011				20,582	37,935
Net income	28,940							28,940		28,940
Other comprehensive income	(4,721)								(4,721)	(4,721)
Share-based compensation	1,102					20	1,082			1,102
Issuance of common stock	1,420					116	1,304			1,420
Conversion of preferred stock to common stock	(1,644)			(9,351)		763	8,588				(1,644)
Issuance of common stock	1,420					116	1,304			1,420
Preferred stock dividends and discount accretion	(510)							(510)		(510)
Distribution to noncontrolling interest	(1)										(1)
Ending Balance at Dec. 31, 2012	248,102					13,052	128,984	59,825	(2,926)	248,101	1
Ending Balance at Dec. 31, 2012				11,231	37,935
Net income	40,911							40,911		40,911
Other comprehensive income	(13,589)								(13,589)	(13,589)
Share-based compensation	1,202						1,202			1,202
Issuance of common stock	104,163					4,792	99,371			104,163
Conversion of preferred stock to common stock				(6,760)		552	6,208
Stock option and director plans	965					87	878			965
Issuance of common stock	104,163					4,792	99,371			104,163
Warrants	125					31	94			125
Net tax benefit related to stock option plans	326						326			326
Preferred stock dividends and discount accretion	(347)							(347)		(347)
Equity contribution for noncontrolling interest	1										1
Ending Balance at Dec. 31, 2013	381,859					18,514	237,063	100,389	(16,515)	381,857	2
Ending Balance at Dec. 31, 2013				$ 4,471	$ 37,935