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International Revenues - Additional Information (Detail)
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12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Percentage of revenue related to fabricated structures for delivery outside U.S | 9.00% | 16.00% | 3.00% |
| X | ||||||||||
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- Definition
Entity Wide Disclosure On Geographic Areas Percent Of Revenue From External Customers Attributed To Foreign Countries No definition available.
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| X | ||||||||||
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- Details
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