Acquisitions - Pro Forma Financial Information (Details) (Composite Engineering, Inc., USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 24, 2012	Jun. 24, 2012
Composite Engineering, Inc.
Business Acquisition [Line Items]
Pro forma revenues	$ 245.6	$ 478.0
Pro forma net loss before tax	(15.4)	(24.5)
Net loss attributable to the registrant	(22.0)	(27.0)
Net income (loss) attributable to the registrant	$ (14.9)	$ (17.4)
Basic and diluted pro forma loss per share	$ (0.33)	$ (0.44)

Business Acquisition Pro Forma Income (Loss) From Continuing Operations Before Income Taxes

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- Definition

Business Acquisition, Pro Forma Net Income (Loss) Attributable to Parent

+ References

No definition available.

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- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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