Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail)

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Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 28, 2013
Dec. 31, 2012
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 95,695 $ 87,267
Less Accumulated Depreciation 36,091 33,730
Property, Plant and Equipment Net 59,604 53,537
Land [Member]
    
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 5,424 5,424
Buildings and Improvements [Member]
    
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 37,742 37,045
Machinery and Equipment [Member]
    
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 50,149 43,342
Construction in Progress [Member]
    
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 2,380 $ 1,456