Acquisition (Details 1) (Alumicor Limited [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Aug. 31, 2013	Aug. 31, 2013
Alumicor Limited [Member]
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue	$ 192,446	$ 384,819
Business Acquisition, Pro Forma Net Income (Loss)	$ 7,388	$ 11,918
Business Acquisition, Pro Forma Earnings Per Share, Basic	$ 0.26	$ 0.42
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$ 0.25	$ 0.41

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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- Definition

The pro forma diluted 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.

+ References

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