Annual report pursuant to Section 13 and 15(d)

Uncompleted Contracts Included in Accompanying Consolidated Balance Sheets (Detail)

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Uncompleted Contracts Included in Accompanying Consolidated Balance Sheets (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Long-term Contracts or Programs Disclosure [Line Items]    
Costs and estimated earnings in excess of billings on uncompleted contracts $ 26,317 $ 12,982
Billings in excess of costs and estimated earnings on uncompleted contracts (28,498) (49,363)
Costs and Estimated Earnings in Excess of Billings $ (2,181) $ (36,381)