Consolidated Statements of Changes in Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2009	$ 11,103	$ 33,459	$ (1,924)	$ 42,638
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	3,667	0	3,667
Other comprehensive income (loss) net of tax	0	0	(141)	(141)
Cash dividends	0	(2,615)	0	(2,615)
Amortization of unearned compensation, restricted stock awards	0	247	0	247
Issuance of common stock - nonvested shares	90	(90)	0	0
Issuance of common stock - vested shares	21	69	0	90
Exercise of stock options	63	156	0	219
Balance at Dec. 31, 2010	11,277	34,893	(2,065)	44,105
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	4,117	0	4,117
Other comprehensive income (loss) net of tax	0	0	748	748
Cash dividends	0	(1,761)	0	(1,761)
Amortization of unearned compensation, restricted stock awards	0	136	0	136
Issuance of common stock - nonvested shares	34	(34)	0	0
Issuance of common stock - vested shares	15	53	0	68
Exercise of stock options	58	100	0	158
Balance at Dec. 31, 2011	11,384	37,504	(1,317)	47,571
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0	2,053	0	2,053
Other comprehensive income (loss) net of tax	0	0	(395)	(395)
Cash dividends	0	(1,774)	0	(1,774)
Amortization of unearned compensation, restricted stock awards	0	140	0	140
Issuance of common stock - nonvested shares	41	(41)	0	0
Issuance of common stock - vested shares	42	111	0	153
Balance at Dec. 31, 2012	$ 11,467	$ 37,993	$ (1,712)	$ 47,748