Stock-based Compensation Stock-based Compensation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense before income taxes	$ 6,597	$ 5,437	$ 19,997	$ 19,313
Income tax benefit	(2,005)	(1,574)	(6,067)	(5,565)
Total stock-based compensation expense after income taxes	4,592	3,863	13,930	13,748
Cost of goods sold
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	895	941	2,516	2,462
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	1,297	1,152	3,771	3,997
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 4,405	$ 3,344	$ 13,710	$ 12,854