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Discontinued Operations (Details) (USD $) In Millions | 6 Months Ended
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Jun. 30, 2011
Discontinued Operations and Disposal Groups [Abstract] |
Increase in warranty reserves associated with discontinued operations | $ 3.8
Discontinued operations expense due to settlement with customer | $ 1.9

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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Increase In Warranty Reserves Associated With Discontinued Operations + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap
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Period Type: | duration