Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [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
	2013	2012	2011
Expected dividend yield	2.01%	2.10%	2.40%
Expected volatility	42.48%	43.19%	43.60%
Expected term	7.4 years	7.4 years	6.5 years
Risk-free interest rate	1.53%	1.41%	2.91%

Summary of Stock Option Activity

A summary of stock option activity for the year ended December 31, 2013 is presented below:

	Shares			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value ($000)
Options
Outstanding at January 1, 2013		684,110		$	24.15
Granted		54,274			62.78
Exercised		(227,410	)		17.89
Forfeited		(5,862	)		51.26
Outstanding at December 31, 2013		505,112			30.80		5.74	$	17,593
Vested or expected to vest at December 31, 2013		504,620			30.77		4.79		17,592
Exercisable at December 31, 2013		392,000			24.69		3.68		16,046

Summary of Stock Award Activity

A summary of stock award activity for the year ended December 31, 2013, is presented below:

	Shares			Weighted-Average Grant Date Fair Value
Unvested Stock Awards
Unvested at January 1, 2013		242,856		$	37.83
Granted		101,924			60.75
Vested		—			—
Forfeited		(123,690	)		37.19
Unvested at December 31, 2013		221,090			48.75

Summary of SARs Activity

A summary of SARs activity for the year ended December 31, 2013 is presented below.

	Shares		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value ($000)
SARs
Outstanding at January 1, 2012		64,700	$	42.82
Granted		92,735		62.92
Forfeited		(9,124)		55.50
Outstanding at December 31, 2013		148,311		54.60		8.74		1,635