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Accounts Payable and Accrued Liabilities - Accounts Payable and Accrued Liabilities (Detail) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Payables And Accruals [Abstract]    
Accounts payable $ 3,207 $ 2,671
Accrued liabilities:    
Employee benefits 5,114 7,652
Taxes other than on income 389 253
Customer tooling 408 320
Professional 20 75
Insurance 156 244
Other 674 403
Total accounts payable and accrued liabilities $ 9,968 $ 11,618