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Other - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Other [Line Items]      
Depreciation and amortization expense $ 7,200 $ 7,700 $ 7,700
Machinery, furniture and equipment 88,914 85,556  
Accumulated Depreciation and amortization 96,273 89,623  
Assets Held under Capital Leases      
Other [Line Items]      
Machinery, furniture and equipment 2,300 2,100  
Accumulated Depreciation and amortization $ 2,100 $ 2,000