Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

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

Income Tax Benefit Recognized for our Share-Based Compensation Arrangements

Compensation cost charged against income, primarily SG&A expense, and the income tax benefit recognized for our share-based compensation arrangements is included below:

	Years Ended December 31,
	2014		2013		2012
			(In thousands)
Total share-based compensation cost	$	18,858	$	14,854	$	12,374
Income tax benefit		7,334		5,777		4,812

Fair Values for SARs and Stock Options Estimated on Grant Date Using Black-Scholes-Merton Option-Pricing Formula Which Incorporates Assumptions

We recognize compensation cost for all awards based on their fair values. The fair values for SARs and stock options are estimated on the grant date using the Black-Scholes-Merton option-pricing formula which incorporates the assumptions noted in the following table. Expected volatility is based on historical volatility, and expected term is based on historical exercise patterns of option holders. The fair value of restricted stock units is the closing market price of our common stock on the date of grant. Compensation costs for awards with service conditions are amortized to expense using the straight-line method. Compensation costs for awards with performance conditions and graded vesting are amortized to expense using the graded attribution method.

	Years Ended December 31,
	2014			2013			2012
	(In thousands, except weighted average fair
	value and assumptions)
Weighted-average fair value of SARs and options granted	$	35.46		$	24.63		$	19.53
Total intrinsic value of SARs converted and options exercised		24,023			47,058			8,898
Cash received for options exercised		48			14,030			2,372
Tax benefit related to share-based compensation		6,859			10,734			4,119
Weighted-average fair value of restricted stock shares and units granted		72.46			50.38			35.85
Total fair value of restricted stock shares and units vested		7,888			9,032			9,017
Expected volatility		52.63	%		53.94	%		54.26	%
Expected term (in years)		5.8			6.1			6.1
Risk-free rate		1.79	%		1.04	%		1.11	%
Dividend yield		0.28	%		0.40	%		0.50	%

Fair Value of Restricted Stock Shares and Units is Market Price of our Common Stock on Date of Grant

SARs and Stock Options										Restricted Shares and Units
	Number			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value			Number			Weighted- Average Grant-Date Fair Value
				(In thousands, except exercise prices, fair values, and contractual terms)
Outstanding at January 1, 2014		1,668		$	36.37							442		$	41.32
Granted		204			72.55							192			72.46
Exercised or converted		(542	)		29.52							(110	)		33.54
Forfeited or expired		(25	)		51.52							(31	)		52.08
Outstanding at December 31, 2014		1,305		$	44.60		7.1	$	44,675			493		$	54.76
Vested or expected to vest at December 31, 2014		1,279		$	44.28		7.1	$	44,159
Exercisable or convertible at December 31, 2014		739			36.68		6.3		31,127