Share-Based Employee Compensation (Tables)

9 Months Ended

Sep. 30, 2013

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

Share-Based Compensation Including Expense for Phantom Stock Units and Cash Settled Stock Appreciation Rights Granted to Employees

The table below summarizes the amounts recognized in the financial statements for the three and nine months endedSeptember 30, 2013 and 2012 for share-based compensation, including expense for stock options, restricted stock units, phantom stock units and cash settled stock appreciation rights (in thousands):

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2013		2012		2013		2012
Cost of sales	$	84	$	28	$	229	$	175
Operating expenses	1,804		1,182		4,028		4,911
Total cost of share-based compensation included in income, before income tax	$	1,888	$	1,210	$	4,257	$	5,086

Weighted Average Black-Scholes Fair Value Assumptions used in Valuation of Stock Options Granted

The table below summarizes the weighted average Black-Scholes fair value assumptions used in the valuation of stock options granted during the nine months ended September 30, 2013 and 2012.

	Nine Months Ended   September 30,
	2013		2012
Dividend yield	0.6	%	1.2	%
Expected volatility	48.8	%	50.6	%
Risk free interest rate	0.7	%	0.8	%
Expected life	4.3 years		4.9 years