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Note 13 - Taxes on Income (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 01, 2017
Jan. 03, 2016
Dec. 28, 2014
Dec. 29, 2013
Operating Loss Carryforwards, Share-based Compensation $ 18,000      
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation 6,300      
Deferred Tax Assets, Operating Loss Carryforwards, Foreign 3,800      
Operating Loss Carryforwards, Valuation Allowance 2,500 $ 4,457    
Increase (Decrease) in Deferred Tax Assets $ (5,000) $ (14,200)    
Effective Income Tax Rate Reconciliation, Percent 31.60% 31.50% 30.60%  
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 35.00%      
Undistributed Earnings of Foreign Subsidiaries $ 279,000      
Deferred Tax Liabilities, Undistributed Foreign Earnings 5,900      
Foreign Earnings to Be Repatriated 4,800      
Unrecognized Tax Benefits 27,888 $ 28,271 $ 27,301 $ 27,361
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 27,900      
Unrecognized Tax Benefits That Would Require To Settle Through Cash 18,300      
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 1,400      
Discontinued Operations [Member]        
Deferred Tax Assets, Operating Loss Carryforwards, State and Local 58,700      
Domestic Tax Authority [Member]        
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration 14,000      
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries $ 1,600      
Domestic Tax Authority [Member] | Earliest Tax Year [Member]        
Open Tax Year 2003      
Domestic Tax Authority [Member] | Deferred Compensation, Share-based Payments [Member]        
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration $ 14,000      
State and Local Jurisdiction [Member]        
Operating Loss Carryforwards, Valuation Allowance $ 40,200      
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]        
Open Tax Year 2011      
State and Local Jurisdiction [Member] | Continuing Operations [Member]        
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration $ 108,900      
Foreign Tax Authority [Member]        
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries $ 200      
Foreign Tax Authority [Member] | Earliest Tax Year [Member]        
Open Tax Year 2006