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Note 4 - Taxes on Income (Detail) - Reconciliation of income taxes computed at the federal statutory tax rate to actual income tax expense from continuing operations: (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 25, 2011
Dec. 26, 2010
Income taxes computed at federal statutory tax rate $ (9,214) $ (12,850) $ (9,976)
Increase (reduction) in income taxes resulting from:      
"Naked credit" related to amortization of intangible assets 13,631 14,218 14,641
State income taxes, net of federal income tax benefit (1,049) (1,463) (1,136)
Increase in deferred tax valuation allowance 3,181 13,328 7,891
Change in reserve for uncertain tax positions   (25) (1,667)
Interest rate swap maturity   (1,975)  
Non-deductible debt discount 6,571    
Other 511 985 290
Income tax expense $ 13,631 $ 12,218 $ 10,043