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
Jun. 29, 2013
Dec. 31, 2012
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 89,494 $ 87,267
Less Accumulated Depreciation 34,753 33,730
Property, Plant and Equipment Net 54,741 53,537
Land [Member]
    
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 5,424 5,424
Building and Building Improvements [Member]
    
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 37,019 37,045
Machinery and Equipment [Member]
    
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross 44,391 43,342
Construction in Progress [Member]
    
Depreciation and Amortization Expenses For Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 2,660 $ 1,456