Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Stock Based Compensation [Abstract]

Assumptions Used To Determine Fair Value of Stock Options

Stock Options:	2012			2011			2010
Grant date fair value	$	4.42		$	4.01		$	4.42
Expected life of options		8 years			8 years			8 years
Risk-free interest rate		1.30	%		1.40	%		2.16	%
Dividend yield rate		2.80	%		2.83	%		2.65	%
Price volatility		28.51	%		28.56	%		28.86	%

Stock Options Activity

		Weighted		Weighted average
	Number of	Average		Remaining Contractual
	Shares	Exercise Price		Life,  in Years
Outstanding at January 1, 2012	248,515	$	18.86
Granted	19,885		20.35
Forfeited	(1,498)		22.30
Exercised	(63,777)		13.17
Outstanding at December 31, 2012	203,125	$	20.76	5.04

Restricted Stock Unit Activity

		Weighted		Weighted average
	Number of	Average Grant		Remaining Contractual
	Shares	Date Fair Value		Life,  in Years
Outstanding at January 1, 2012	72,271	$	17.49
Granted	21,643		20.35
Vested	(27,738)		16.28
Forfeited	(1,999)		18.22
Outstanding at December 31, 2012	64,177	$	18.96	1.84