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Property and Equipment - Summary of Property and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 231,895 $ 250,119
Less accumulated depreciation and amortization (88,834) (97,574)
Property and equipment, net 143,061 152,545
Land and Improvements [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 24,240 23,651
Buildings [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 42,763 39,834
Machinery and Equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 136,581 155,276
Equipment Under Capital Lease [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 14,196 21,452
Construction in Progress [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 14,115 $ 9,906