Consolidated Statements of Shareholders' Equity (Unaudited) (USD $) In Thousands, except Share data	Preferred Stock [Member]	Common stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Beginning balance at Dec. 31, 2012	$ 70,787	$ 131,877	$ 153,629	$ (176)	$ 356,117
Beginning balance, shares at Dec. 31, 2012		19,669
Net income			8,688		8,688
Cash dividends declared ($0.16 per common share)			(3,147)		(3,147)
Preferred dividends			(462)		(462)
Stock-based compensation		220			220
Stock-based compensation, shares		11
Other comprehensive income (loss)				(1,311)	(1,311)
Ending balance at Jun. 30, 2013	70,787	132,097	158,708	(1,487)	360,105
Ending balance, shares at Jun. 30, 2013		19,680			19,679,659
Beginning balance at Dec. 31, 2013	70,787	132,099	167,136	1,900	371,922
Beginning balance, shares at Dec. 31, 2013		19,680			19,679,659
Net income			12,322		12,322
Cash dividends declared ($0.16 per common share)			(3,153)		(3,153)
Preferred dividends			(434)		(434)
Stock-based compensation		318			318
Stock-based compensation, shares		25
Other comprehensive income (loss)				118	118
Ending balance at Jun. 30, 2014	$ 70,787	$ 132,417	$ 175,871	$ 2,018	$ 381,093
Ending balance, shares at Jun. 30, 2014		19,705			19,705,381