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Property and Equipment, Net (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 166,832 $ 150,207
Accumulated depreciation and amortization (104,117) (96,727)
Property and equipment, net 62,715 53,480
Land    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 820 853
Buildings and Improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 69,675 58,915
Machinery, vehicles and equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 43,150 43,124
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 14,311 14,001
Computer Hardware and Software    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 38,876 $ 33,314