CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2010	$ 159,370	$ 16,790	$ 3,098	$ 33,903	$ 104,683	$ 896
Beginning balance (in shares) at Dec. 31, 2010			7,432,295
Comprehensive income
Net income	16,489				16,489
Change in net unrealized gain (loss), net of tax	2,417					2,417
Dividends declared per share	(4,162)				(4,162)
Dividends paid and accrued on preferred stock	(762)				(762)
Preferred stock repurchased	(17,000)	(17,000)
Stock activity under stock based compensation plans	15			15
Stock activity under stock based compensation plans (in shares)			700
Stock-based compensation expense	203			203
Accretion of preferred stock discount	0	210			(210)
Ending balance at Dec. 31, 2011	156,570	0	3,098	34,121	116,038	3,313
Ending balance (in shares) at Dec. 31, 2011			7,432,995
Comprehensive income
Net income	18,145				18,145
Change in net unrealized gain (loss), net of tax	614					614
Dividends declared per share	(5,894)				(5,894)
Stock activity under stock based compensation plans	841			841
Stock activity under stock based compensation plans (in shares)			37,241
Stock-based compensation expense	164			164
Ending balance at Dec. 31, 2012	170,440	0	3,098	35,126	128,289	3,927
Ending balance (in shares) at Dec. 31, 2012			7,470,236
Comprehensive income
Net income	19,765				19,765
Change in net unrealized gain (loss), net of tax	(5,704)					(5,704)
Dividends declared per share	(5,200)				(5,200)
Warrant repurchased	(2,151)			(1,015)	(1,136)
Stock activity under stock based compensation plans	3,552			3,552
Stock activity under stock based compensation plans (in shares)			149,763
Stock-based compensation expense	437			437
Ending balance at Dec. 31, 2013	$ 181,139	$ 0	$ 3,098	$ 38,100	$ 141,718	$ (1,777)
Ending balance (in shares) at Dec. 31, 2013			7,619,999