Significant Accounting Policies Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of Significant Accounting Policies [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	$ 1,900,000	$ 2,500,000	$ 900,000
Allowance for Doubtful Accounts Receivable	19,200,000	13,900,000
Percentage of income tax benefit anticipated to be recognized upon ultimate settlement with taxing authority	50.00%
Legal patent defense costs capitalized	7,500,000	7,400,000
Write Off Of Capitalized Patent Costs		5,600,000
Research and development, net	82,488,000	84,384,000	69,547,000
Income Tax Reconciliation, Tax Credits, Research	400,000	300,000	400,000
Preproduction Costs Related to Long-term Supply Arrangements, Costs Capitalized	6,200,000	2,200,000
Reclassed accounts payable to accrued expenses		10,100,000	9,800,000
Cost of service revenues reclassed to cost of product revenues		3,300,000	3,200,000
ReclassificationFromSGAtoGainOnSaleOfAssets			200,000
Cash Surrender Value of Life Insurance	19,000,000	26,100,000
Loans, Gross, Insurance Policy	17,400,000	16,000,000
Cash Surrender Value Of Life Insurance Net Of Policy Loans Payable	$ 1,600,000	$ 10,100,000
Minimum
Schedule of Significant Accounting Policies [Line Items]
Product Revenues, Recognition Period	1 year
Maximum
Schedule of Significant Accounting Policies [Line Items]
Product Revenues, Recognition Period	3 years