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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 6 Months Ended
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Jun. 30, 2014
Significant Accounting Policies [Line Items] |
Ownership interest rate | 70.00%
Ownership interest description | Investments in non-wholly-owned companies are generally consolidated or accounted for under the equity method of accounting when the Company has a 20% to 50% ownership interest or exercises significant influence over the venture. If the Company’s interest exceeds 50%, or if the Company has the power to direct the economic activities of the entity and the obligation to absorb losses, the results of the non-wholly-owned company are consolidated herein. All other investments are generally accounted for under the cost method.
Unapproved change orders on open projects | $ 27.7
Schuff [Member] |
Significant Accounting Policies [Line Items] |
Minority interest rate | 70.00%
Genovel [Member] |
Significant Accounting Policies [Line Items] |
Minority interest rate | 80.00%
Minimum [Member] |
Significant Accounting Policies [Line Items] |
Ownership interest rate | 20.00%
Maximum [Member] |
Significant Accounting Policies [Line Items] |
Ownership interest rate | 50.00%
Buildings and Improvements [Member] | Minimum [Member] |
Significant Accounting Policies [Line Items] |
Estimated useful lives of property, plant and equipment | 5 years
Buildings and Improvements [Member] | Maximum [Member] |
Significant Accounting Policies [Line Items] |
Estimated useful lives of property, plant and equipment | 40 years
Machinery and Equipment [Member] | Minimum [Member] |
Significant Accounting Policies [Line Items] |
Estimated useful lives of property, plant and equipment | 3 years
Machinery and Equipment [Member] | Maximum [Member] |
Significant Accounting Policies [Line Items] |
Estimated useful lives of property, plant and equipment | 15 years

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- Definition A description of the principal activities of an investee accounted for under the equity method. + References No definition available. + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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- Definition The amount of costs incurred on unapproved change orders when it is probable that the cost will be recovered through a change in the contract price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Subparagraph c(3) -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 910 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6471523&loc=d3e50000-109363 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 910 -SubTopic 310 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6471494&loc=d3e49324-109356 + Details
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