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Accounts Payable and Accrued Liabilities - Accounts Payable and Accrued Liabilities (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Payables And Accruals [Abstract]    
Accounts payable $ 2,911 $ 2,614
Accrued liabilities:    
Employee benefits 6,826 7,644
Customer tooling 378 346
Taxes other than on income 620 300
Other 687 978
Total accounts payable and accrued liabilities $ 11,422 $ 11,882