Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Loss and Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail)

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Accumulated Other Comprehensive Loss and Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($)
$ in Thousands
Apr. 02, 2016
Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Total Shareholders’ Equity $ 310,973 $ 300,225
Foreign Currency Translation Adjustments    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Total Shareholders’ Equity (6,155) (7,971)
Retirement Liability Adjustment    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Retirement Liability Adjustment – Before Tax 10,711 10,912
Tax Benefit 3,749 3,819
Total Shareholders’ Equity 6,962 7,093
Accumulated Other Comprehensive Loss    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Total Shareholders’ Equity $ (13,117) $ (15,064)