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Other Balance Sheet Captions (Detail) - Components of Accrued Expenses - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Components of Accrued Expenses [Abstract]    
Employee benefit plans $ 820 $ 1,027
Salaries and wages 5,641 6,790
Restructuring and severance charges 124 517
Property taxes 824 784
Other accrued expenses 1,536 1,282
Total $ 8,945 $ 10,400