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Organization and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
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12 Months Ended | 12 Months Ended | ||||||||
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Dec. 31, 2012
Project
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2012
Louisiana
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Nov. 01, 2012
Louisiana
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Dec. 31, 2012
Texas
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Dec. 31, 2012
Minimum
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Dec. 31, 2012
Maximum
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Dec. 31, 2012
Houma, Louisiana
Entity
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Dec. 31, 2012
San Patricio County, Texas
Entity
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| Significant Accounting Policies [Line Items] | ||||||||||
| Number of major subsidiaries | 5 | 1 | ||||||||
| Workers compensation liability | $ 1,600,000 | $ 983,000.0 | ||||||||
| Insurance policy deductible per occurrence | 500,000 | 300,000 | 300,000 | |||||||
| Estimated life of Property, plant and equipment | 3 years | 25 years | ||||||||
| Total revenue recorded in relation to orders change in projects | 5,200,000 | |||||||||
| Total revenue recorded in relation to re-measure units and quantities within customer construction contract | 7,700,000 | |||||||||
| Number of projects orders changed | 4 | |||||||||
| Recognized contract losses from uncompleted contracts | $ (12,500,000) | $ (3,000,000) | $ (1,300,000) | |||||||