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Restructuring And Impairments (Narrative) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 | Mar. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Reduction in global workforce, percentage |  | 50.00%
Employee severance and benefit costs |  | $ 5.3
Lease rentals discount rate |  | 10.10%
Facility exit costs |  | 2.2
Impairment charge | 1.7 |
Impairment charges of long-lived assets for which there is no remaining future economic benefit |  | 3.6
Klagenfurt And Middleton [Member] |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Facility exit costs |  | $ 0.3
Klagenfurt, Austria [Member] |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Space to be vacated, square feet |  | 8,937
Middleton, WI [Member] |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Space to be vacated, square feet |  | 33,000
Nuremburg, Germany [Member] |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Space to be vacated, square feet |  | 3,300

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