Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Data (Unaudited) [Abstract]

Quarterly results of operations for the four quarters

	(In Thousands, except per share data)
	2012								2011								2010
	Fourth		Third		Second		First		Fourth		Third		Second		First		Fourth		Third		Second		First
	Quarter		Quarter		Quarter		Quarter		Quarter		Quarter		Quarter		Quarter		Quarter		Quarter		Quarter		Quarter
Interest income	$	18,263		18,027		18,166		17,905		17,959		18,295		18,181		17,915		18,376		18,919		19,669		19,216
Net interest income		15,079		14,628		14,590		13,957		13,639		13,880		13,725		13,216		13,178		13,077		13,381		12,492
Provision for loan losses		2,655		2,407		2,210		2,256		1,629		2,462		2,618		1,969		4,666		1,989		6,073		2,106
Earnings before income taxes		4,267		5,643		5,122		4,631		3,917		4,365		4,283		4,030		2,827		5,122		2,683		4,223
Net earnings		2,715		3,459		3,149		2,825		2,296		2,663		2,615		2,476		1,687		3,100		1,655		2,585
Basic earnings per common share		0.37		0.47		0.43		0.39		0.31		0.37		0.36		0.34		0.23		0.43		0.23		0.36
Diluted earnings per common share		0.37		0.47		0.43		0.39		0.31		0.36		0.36		0.34		0.23		0.43		0.23		0.36