Stock, Stock Options and Rights (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stock-Based Compensation Expense Allocation [Line Items]
Total stock-based compensation expense included in income from operations	$ 29,225	$ 25,082	$ 17,560
Stock-based compensation expense included in cost of goods sold
Stock-Based Compensation Expense Allocation [Line Items]
Total stock-based compensation expense included in income from operations	9,021	6,918	4,652
Operating expenses:
Stock-Based Compensation Expense Allocation [Line Items]
Total stock-based compensation expense included in income from operations	20,204	18,164	12,908
Research, development and engineering
Stock-Based Compensation Expense Allocation [Line Items]
Total stock-based compensation expense included in income from operations	9,261	8,492	6,337
Selling, general and administrative
Stock-Based Compensation Expense Allocation [Line Items]
Total stock-based compensation expense included in income from operations	$ 10,943	$ 9,672	$ 6,571