Earnings Per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Basic:
Net income	$ 1,941	$ 1,877	$ 5,730	$ 5,520
Less: Preferred stock dividend and amortization of discount	(163)	(561)	(633)	(1,094)
Net income available to common shareholders	1,778	1,316	5,097	4,426
Average shares outstanding	3,364,334	3,319,094	3,360,224	3,313,212
Net income per common share, basic (in dollars per share)	$ 0.53	$ 0.40	$ 1.52	$ 1.34
Diluted:
Net income available to common shareholders	$ 1,778	$ 1,316	$ 5,097	$ 4,426
Average shares:
Common shares outstanding for basic	3,364,334	3,319,094	3,360,224	3,313,212
Add: Dilutive effect of outstanding warrants	0	99,413	0	116,131
Average shares and dilutive potential common shares	3,364,334	3,418,507	3,360,224	3,429,343
Net income per common share, diluted (in dollars per share)	$ 0.53	$ 0.38	$ 1.52	$ 1.29