CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Preferred Stock	Common Stock	Warrants	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balances at Dec. 31, 2009	$ 373,586	$ 80,095	$ 16,488	$ 3,699	$ 87,334	$ 188,622	$ (2,652)
Net income	23,520	0	0	0	0	23,520	0
Other comprehensive income, net of tax	32						32
Redemption of preferred stock - 83,094 shares	(83,094)	(83,094)	0	0	0	0	0
Common stock dividends - $0.46 per share in 2012, $0.34 per share in 2011, $0.04 per share in 2010	(893)	0	0	0	0	(893)	0
Preferred stock dividends - $50.00 per share	(3,151)	0	0	0	0	(3,151)	0
Stock compensation expense	904	0	0	0	904	0	0
Discount accretion	0	2,999	0	0	0	(2,999)	0
Common stock issued pursuant to:
Common stock issuance	95,634	0	7,475	0	88,159	0	0
Stock option plan - 3,906 shares in 2012, 2,037 shares in 2011, 30,498 shares in 2010	465	0	31	0	434	0	0
Employee stock purchase plan - 30,795 shares in 2012, 33,284 shares in 2011, 33,826 shares in 2010	420	0	34	0	386	0	0
Director stock purchase plan - 1,083 shares in 2012, 1,833 shares in 2011, 3,709 shares in 2010	55	0	4	0	51	0	0
Restricted stock - 46,512 shares in 2012, 30,853 shares in 2011, 15,477 shares in 2010	87	0	15	0	72	0	0
DRIP plan - 265 shares	4	0	0	0	4	0	0
Balances at Dec. 31, 2010	407,569	0	24,047	3,699	177,344	205,099	(2,620)
Net income	34,102	0	0	0	0	34,102	0
Other comprehensive income, net of tax	15,868						15,868
Common stock dividends - $0.46 per share in 2012, $0.34 per share in 2011, $0.04 per share in 2010	(8,259)	0	0	0	0	(8,259)	0
Stock compensation expense	1,207	0	0	0	1,207	0	0
Stock warrant redemption	(4,449)	0	0	(3,699)	(750)	0	0
Common stock issued pursuant to:
Stock option plan - 3,906 shares in 2012, 2,037 shares in 2011, 30,498 shares in 2010	25	0	2	0	23	0	0
Employee stock purchase plan - 30,795 shares in 2012, 33,284 shares in 2011, 33,826 shares in 2010	500	0	33	0	467	0	0
Director stock purchase plan - 1,083 shares in 2012, 1,833 shares in 2011, 3,709 shares in 2010	32	0	2	0	30	0	0
Restricted stock - 46,512 shares in 2012, 30,853 shares in 2011, 15,477 shares in 2010	(152)	0	31	0	(183)	0	0
Purchase of treasury shares - 23,592 shares	(334)	0	(24)	0	(310)	0	0
Balances at Dec. 31, 2011	446,109	0	24,091	0	177,828	230,942	13,248
Net income	36,554	0	0	0	0	36,554	0
Other comprehensive income, net of tax	(1,936)	0	0	0	0	0	(1,936)
Common stock dividends - $0.46 per share in 2012, $0.34 per share in 2011, $0.04 per share in 2010	(11,890)	0	0	0	0	(11,890)	0
Stock compensation expense	1,451	0	0	0	1,451	0	0
Common stock issued pursuant to:
Common stock issuance	13,023	0	732	0	12,291	0	0
Stock option plan - 3,906 shares in 2012, 2,037 shares in 2011, 30,498 shares in 2010	51	0	4	0	47	0	0
Employee stock purchase plan - 30,795 shares in 2012, 33,284 shares in 2011, 33,826 shares in 2010	478	0	31	0	447	0	0
Director stock purchase plan - 1,083 shares in 2012, 1,833 shares in 2011, 3,709 shares in 2010	19	0	1	0	18	0	0
Restricted stock - 46,512 shares in 2012, 30,853 shares in 2011, 15,477 shares in 2010	(347)	0	46	0	(393)	0	0
Balances at Dec. 31, 2012	$ 483,512	$ 0	$ 24,905	$ 0	$ 191,689	$ 255,606	$ 11,312