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Accounts Payable and Accrued Liabilities - Accounts Payable and Accrued Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Payables And Accruals [Abstract]    
Accounts payable $ 2,710 $ 2,797
Accrued liabilities:    
Employee benefits 4,571 6,541
Customer tooling 624 282
Taxes other than on income 383 439
Insurance 233 305
Other 605 697
Total $ 9,126 $ 11,061