Consolidated Statements of Changes in Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Preferred Stock [Member]	Common Stock [Member]	Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2010	$ 0	$ 6,128	$ 27,268	$ 74,850	$ (159)	$ 108,087
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	0	11,571		11,571
Other comprehensive income (loss)	0	0	0	0	6,989	6,989
Issuance of common stock	0	1,626	28,279	0	0	29,905
Issuance of preferred stock	5,000	0	0	0	0	5,000
Issuance of replacement options	0	0	132	0	0	132
Retirement of preferred stock	(5,000)	0	0	1,900	0	(3,100)
Stock options exercised	0	11	162	0	0	173
Stock-based compensation expense	0	0	63	0	0	63
Equity-based compensation	0	42	491	0	0	533
Dividends on preferred stock	0	0	0	(103)	0	(103)
Cash dividends declared	0	0	0	(6,421)		(6,421)
Balance at Dec. 31, 2011	0	7,807	56,395	81,797	6,830	152,829
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	0	16,006	0	16,006
Other comprehensive income (loss)	0	0	0	0	767	767
Stock options exercised	0	7	111	0	0	118
Equity-based compensation	0	33	705	0	0	738
Dividends on preferred stock						0
Cash dividends declared	0	0	0	(7,212)		(7,212)
Balance at Dec. 31, 2012	0	7,847	57,211	90,591	7,597	163,246
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	0	0	15,747	0	15,747
Other comprehensive income (loss)	0	0	0	0	(5,077)	(5,077)
Stock options exercised	0	18	291	0	0	309
Equity-based compensation	0	26	548	0	0	574
Dividends on preferred stock						0
Cash dividends declared	0	0	0	(7,248)	0	(7,248)
Balance at Dec. 31, 2013	$ 0	$ 7,891	$ 58,050	$ 99,090	$ 2,520	$ 167,551