Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings Per Share [Abstract]

Computation of basic and diluted earnings per share

	Three months ended September 30,						Nine months ended September 30,
	2012			2011			2012			2011
Net income per consolidated statements of income	$	4,563		$	4,067		$	13,246		$	11,235
Net earnings allocated to participating securities		(17	)		(12	)		(50	)		(34	)
Net earnings allocated to common stock	$	4,546		$	4,055		$	13,196		$	11,201
Basic earnings per common share computation:
Distributed earnings allocated to common stock	$	2,045		$	2,025		$	6,130		$	6,064
Undistributed earnings allocated to common stock		2,501			2,030			7,066			5,137
Net earnings allocated to common stock	$	4,546		$	4,055		$	13,196		$	11,201
Weighted average common shares outstanding, including shares considered participating securities		12,448			12,315			12,430			12,290
Less: Average participating securities		(41	)		(31	)		(42	)		(35	)
Weighted average shares		12,407			12,284			12,388			12,255
Basic earnings per common share	$	0.37		$	0.33		$	1.07		$	0.91
Diluted earnings per common share computation:
Net earnings allocated to common stock	$	4,546		$	4,055		$	13,196		$	11,201
Weighted average common shares outstanding for basic earnings per common share		12,407			12,284			12,388			12,255
Add: Dilutive effects of assumed exercises of stock options		4			6			4			7
Weighted average shares and dilutive potential common shares		12,411			12,290			12,392			12,262
Diluted earnings per common share	$	0.37		$	0.33		$	1.06		$	0.91