Stock-Based Compensation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stock-based compensation costs
Total employee stock-based recognized in income (loss)	$ 20,913	$ 15,539	$ 10,579
Amount capitalized in inventory		10	19
Total stock-based compensation expense	20,913	15,549	10,597
Cost of Revenue [Member]
Stock-based compensation costs
Total employee stock-based recognized in income (loss)	3,075	2,197	1,517
Research and Development Expense [Member]
Stock-based compensation costs
Total employee stock-based recognized in income (loss)	6,926	5,013	3,846
Selling general and administrative expense [Member]
Stock-based compensation costs
Total employee stock-based recognized in income (loss)	$ 10,912	$ 8,329	$ 5,215