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Taxes on Income - Deferred Tax Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 30, 2012
Jan. 01, 2012
Deferred Tax Assets And Liabilities [Line Items]    
Deferred income taxes (current asset) $ 10,271 $ 9,699
Deferred tax asset (non-current asset) 62,856 47,290
Deferred income taxes (non-current liabilities) (7,339) (8,391)
Total $ 65,788 $ 48,598