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Taxes (Narratives) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Dec. 28, 2013
Income tax contingency      
Loss carryforwards $ 63,401    
Deferred income tax (benefit) expense $ (2,425) $ 2,026 $ (2,639)
Tax at statutory rate 35.00% 35.00% 35.00%
Undistributed earnings of certain foreign subsidiaries $ 895,800    
Unrecognized tax benefits that would favorably impact the effective tax rate in future periods if recognized 20,000 $ 12,800 $ 9,600
Unrecognized tax benefits excluding interest and penalties 900    
Accrued income tax-related interest 2,200 1,800  
Penalties accrued 1,800 400  
Accrued interest (benefit) expense 300 700 (1,000)
Foreign income tax      
Income tax contingency      
Loss carryforwards 7,100    
Tax expense reduced from exercise of non-qualified stock options and stock appreciation rights and vesting of restricted stock and restricted stock units 300 400 800
U.S. income tax      
Income tax contingency      
Loss carryforwards 6,400    
Tax expense reduced from exercise of non-qualified stock options and stock appreciation rights and vesting of restricted stock and restricted stock units 2,400 $ 4,700 $ 12,000
U.S. income tax | Internal Revenue Service      
Income tax contingency      
Federal income tax returns refund $ 2,200