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Quarterly Data (Details Textual) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012
Quarterly Data (Textual) [Abstract] |  |  |  |
Net sales recognized under percentage of completion accounting |  | $ 0.8 |  |
Cost of sales reduction | $ 0.2 | $ 0.1 | $ 0.1 | $ 0.4

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- Definition Out of period adjustment to cost of sales. + References No definition available. + Details
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- Definition Out of period adjustment to net sales using percentage of completion accounting. + References No definition available. + Details
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- Details
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