Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Stock-Based Compensation [Abstract]

Fair value assumptions for stock options

The risk-free rate is the U.S. Treasury note rate that corresponds to the expected option term at the date of grant.

	For the Years Ended December 31
	2012	2011	2010
Expected dividend yield	2.10%	2.40%	2.70%
Expected volatility	43.19%	43.60%	41.79%
Expected life	7.4 years	6.5 years	6.5 years
Risk-free interest rate	1.41%	2.91%	2.87%

Summary of stock option activity

A summary of stock option activity for the year ended December 31, 2012 is presented below:

	Shares			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value ($000)
Options
Outstanding at January 1, 2012		1,203,296		$	18.79
Granted		65,246			42.82
Exercised		(582,730	)		15.11
Forfeited		(1,702	)		39.20
Outstanding at December 31, 2012		684,110			24.15		4.52		21,471
Vested or expected to vest at December 31, 2012		680,852			24.07		4.50		21,430
Exercisable at December 31, 2012		498,660			18.52		3.54		18,463

Summary of stock award activity

A summary of stock award activity for the year ended December 31, 2012, is presented below:

	Shares			Weighted-Average Grant Date Fair Value
Unvested Stock Awards
Unvested at January 1, 2012		271,624		$	29.11
Granted		118,916			41.00
Vested		(61,051	)		24.18
Forfeited		(86,633	)		24.48
Unvested at December 31, 2012		242,856		$	37.83

Summary of SARs activity

A summary of SARs activity for the year ended December 31, 2012 is presented below.

	Shares		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value ($000)
SARs
Granted		65,246	$	42.82
Forfeited		546		42.77
Outstanding at December 31, 2012		64,700		42.82		9.13		823