Note 11. Financing arrangements (Details) - Debt (USD $)
In Thousands, unless otherwise specified
Dec. 29, 2013
Dec. 30, 2012
Nov. 09, 2010
Feb. 09, 2010
Note 11. Financing arrangements (Details) - Debt [Line Items]        
Term Loan $ 296,135 $ 216,295   $ 450,000
Debt     200,000  
Total debt 501,932 416,295    
Less: current portion 97,320 5,382    
Long-term debt 404,612 410,913    
Senior Convertible Notes [Member]
       
Note 11. Financing arrangements (Details) - Debt [Line Items]        
Debt 111,733      
Senior Unsecured Notes [Member]
       
Note 11. Financing arrangements (Details) - Debt [Line Items]        
Debt $ 94,064 $ 200,000