Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total
Balance beginning at Dec. 31, 2008	$ 1,751	$ 5,856	$ 36,328	$ 1,450	$ (5,486)	$ 39,899
Net income			3,116			3,116
Unrealized gain on securities available for sale, net of tax				642		642
Reclassification adjustment for net security gain, included in net income, net of tax				(316)		(316)
Total comprehensive income						3,442
Grants of restricted stock		(282)			282	0
Vesting of restricted stock		25				25
Cash dividends declared			(1,082)			(1,082)
Cash dividends declared on unvested restricted stock grants			(14)			(14)
Balance ending at Dec. 31, 2009	1,751	5,599	38,348	1,776	(5,204)	42,270
Net income			4,754			4,754
Unrealized gain on securities available for sale, net of tax				847		847
Amortization of unrealized gain on securities available for sale transferred to securities held to maturity included in net income, net of tax				(92)		(92)
Unrealized loss on interest rate swap, net of tax				(48)		(48)
Reclassification adjustment for net security gain, included in net income, net of tax				12		12
Reclassification of interest rate swap settlements included in earnings, net of tax				33		33
Total comprehensive income						5,506
Grants of restricted stock		(135)			135	0
Vesting of restricted stock		42				42
Cash dividends declared			(1,113)			(1,113)
Cash dividends declared on unvested restricted stock grants			(15)			(15)
Balance ending at Dec. 31, 2010	1,751	5,506	41,974	2,528	(5,069)	46,690
Net income			5,305			5,305
Unrealized gain on securities available for sale, net of tax				109		109
Amortization of unrealized gain on securities available for sale transferred to securities held to maturity included in net income, net of tax				(348)		(348)
Unrealized loss on interest rate swap, net of tax				(447)		(447)
Reclassification adjustment for net security gain, included in net income, net of tax				(19)		(19)
Reclassification of interest rate swap settlements included in earnings, net of tax				111		111
Total comprehensive income						4,711
Proceeds from stock options issued out of treasury		(31)			76	45
Grants of restricted stock		(236)			236	0
Vesting of restricted stock		84				84
Cash dividends declared			(1,147)			(1,147)
Cash dividends declared on unvested restricted stock grants			(21)			(21)
Balance ending at Dec. 31, 2011	$ 1,751	$ 5,323	$ 46,111	$ 1,934	$ (4,757)	$ 50,362