Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2011	$ 97,474	$ 15,021	$ (728)	$ 9,000	$ 73,526	$ 655
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,364				4,364
Other comprehensive income (loss), net of taxes	191					191
Common stock shares issued	141	24		117
Cash dividends declared	(2,260)				(2,260)
Ending Balance at Jun. 30, 2012	99,910	15,045	(728)	9,117	75,630	846
Beginning Balance at Dec. 31, 2012	101,264	15,070	(728)	9,246	77,888	(212)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,740				4,740
Other comprehensive income (loss), net of taxes	(2,208)					(2,208)
Common stock shares issued	268	39		229
Cash dividends declared	(2,268)				(2,268)
Ending Balance at Jun. 30, 2013	$ 101,796	$ 15,109	$ (728)	$ 9,475	$ 80,360	$ (2,420)