Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2011

Stock-Based Compensation [Abstract]

Stock Option Valuation Assumptions

	0000000000	0000000000	0000000000	0000000000
	Three Months Ended September 30,		Nine Months Ended September 30,
Stock Option Valuation Assumptions	2011	2010	2011	2010
Expected volatility	47%	52%	47 – 50%	52%
Dividend yield	0.0%	0.0%	0.0%	0.0%
Expected life	6.4 years	6.2 years	6.3 – 6.4 years	6.2 years
Risk-free interest rate	1.3%	1.8%	1.3– 2.7%	1.8 – 2.7%
Weighted average fair value of common stock per share	$29.08	$21.70	$27.54	$21.39

Stock-Based Compensation Expense

		000000000000		000000000000		000000000000		000000000000
	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Cost of sales	$	1,334	$	1,044	$	3,864	$	2,852
Research and development		4,372		3,621		12,070		10,244
Selling, general and administrative		5,912		5,292		16,673		14,578
Total stock-based compensation expense	$	11,618	$	9,957	$	32,607	$	27,674