Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Assumptions Used To Determine Fair Value of Stock Options

The following assumptions were used to determine the fair value of stock options as of the grant date to determine compensation expense for the years ended December 31, 2014, 2013, and 2012:

Stock Options:	2014			2013			2012
Grant date fair value		$6.73			$5.59			$4.42
Expected life of options	8 years			8 years			8 years
Risk-free interest rate	2.21		%	2.30		%	1.30		%
Dividend yield rate	2.64		%	2.90		%	2.80		%
Price volatility	28.93		%	28.89		%	28.51		%

Stock Options Activity

The following table summarizes stock options activity during 2014: 

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life, in Years
Outstanding at January 1, 2014	205,486			$21.32
Granted	18,321		27.28
Forfeited	(2,206	)	24.60
Exercised	(41,611	)	21.57
Outstanding at December 31, 2014	179,990			$21.83	4.06

Restricted Stock Unit Activity

The following table summarizes restricted stock unit activity during 2014:

	Number of Shares		Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Life, in Years
Outstanding at January 1, 2014	59,118			$21.03
Granted	22,118		27.28
Vested	(15,246	)	18.40
Forfeited	(6,504	)	20.95
Outstanding at December 31, 2014	59,486			$24.03	1.93