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Contingencies (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 0 Months Ended
--- | --- | ---
Mar. 31, 2013 | Apr. 22, 2013 Patent Infringement [Member]
Loss Contingencies [Line Items] |  |
Litigation Settlement (charge) | $ (1.5) | $ (1.5)
Litigation settlement amount (charge), net of tax | $ (1.0) | $ (1.0)
Litigation settlement amount, impact on diluted earnings per share |  | $ 0.04

X
- Definition Litigation settlement amount, impact on diluted earnings per share + References No definition available. + Details
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- Definition Litigation settlement amount, net of taxes + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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X
- Definition Amount of judgment or settlement awarded to (against) the entity in respect of litigation. + References No definition available. + Details
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X
- Details
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