Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Basic and diluted earnings per common share [Abstract]
Net income	$ 1,240	$ 1,404	$ 2,736	$ 2,182
Weighted average number of basic common shares outstanding (B) (in shares)	8,901,618	8,847,870	8,888,702	8,849,042
Dilutive effect of stock options and awards computed based on the treasury stock method using average market price (in shares)	224,709	204,844	210,996	199,143
Weighted average number of diluted common shares outstanding (C) (in shares)	9,126,327	9,052,714	9,099,698	9,048,185
Basic earnings per common share (A/B) (in dollars per share)	$ 0.14	$ 0.16	$ 0.31	$ 0.25
Diluted earnings per common share (A/C) (in dollars per share)	$ 0.14	$ 0.16	$ 0.30	$ 0.24