Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance - at Dec. 31, 2008	$ 14,977	$ (442)	$ 8,787	$ 62,916	$ (1,799)	$ 84,439
Comprehensive income:
Net income				7,219		7,219
Other comprehensive income (loss), net of taxes					1,443	1,443
Total Comprehensive Income						8,662
Tresury stock purchased (27,600 shares)		(286)				(286)
Cash dividends declared				(4,512)		(4,512)
Balance - at Dec. 31, 2009	14,977	(728)	8,787	65,623	(356)	88,303
Comprehensive income:
Net income				8,419		8,419
Other comprehensive income (loss), net of taxes					1,538	1,538
Total Comprehensive Income						9,957
Cash dividends declared				(4,506)		(4,506)
Balance - at Dec. 31, 2010	14,977	(728)	8,787	69,536	1,182	93,754
Comprehensive income:
Net income				8,502		8,502
Other comprehensive income (loss), net of taxes					(527)	(527)
Total Comprehensive Income						7,975
Common stock shares issued (17,466 shares)	44		213			257
Cash dividends declared				(4,512)		(4,512)
Balance - at Dec. 31, 2011	$ 15,021	$ (728)	$ 9,000	$ 73,526	$ 655	$ 97,474