Annual report pursuant to Section 13 and 15(d)

Property, Plant and Equipment (Detail)

v3.3.1.900
Property, Plant and Equipment (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross $ 437,188 $ 438,128
Less accumulated depreciation 236,804 213,351
Property, plant and equipment, Net 200,384 224,777
Land    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross 10,463 10,463
Buildings    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross $ 64,154 63,837
Property, plant and equipment, estimated useful life 25 years  
Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross $ 223,521 228,284
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross 5,354 5,354
Transportation equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross 3,481 3,748
Improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross $ 127,727 125,265
Property, plant and equipment, estimated useful life 15 years  
Construction in progress    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross $ 2,488 $ 1,177
Minimum    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, estimated useful life 3 years  
Minimum | Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, estimated useful life 3 years  
Minimum | Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, estimated useful life 3 years  
Minimum | Transportation equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, estimated useful life 3 years  
Maximum    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, estimated useful life 25 years  
Maximum | Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, estimated useful life 25 years  
Maximum | Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, estimated useful life 5 years  
Maximum | Transportation equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, estimated useful life 5 years