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Debt Obligations - Debt Information (Details) - USD ($)
1 Months Ended 12 Months Ended
Mar. 31, 2009
Dec. 28, 2014
Dec. 29, 2013
Dec. 27, 2015
Nov. 30, 2010
Dec. 31, 2005
Notes Due 2015 [Member]            
Debt Information            
Debt instrument, face amount           $ 250,000,000
Interest rate on debt   5.00%       5.00%
Debt repaid   $ 20,400,000        
Premium (charge) on debt redemption   $ (300,000)        
Notes Due 2016 [Member]            
Debt Information            
Debt instrument, face amount         $ 225,000,000  
Interest rate on debt   6.625%   6.625% 6.625%  
Premium (charge) on debt redemption   $ (2,200,000) $ (2,100,000)      
Redemption of long-term debt   $ 18,400,000 $ 17,400,000      
Percentage of principle available for debt redemption         100.00%  
Option To Repurchase Headquarters Building 2019 [Member]            
Debt Information            
Sale leaseback transaction, sale price for the Condo Interest $ 225,000,000          
Sale leaseback purchase option price $ 250,000,000          
Sale leaseback financing, lease term 15 years          
Sale leaseback financing, lease renewal term 20 years          
Proceeds from sale-leaseback financing $ 211,000,000          
Debt instrument, fee amount $ 39,000,000          
Sale leaseback financing, amortization period 10 years          
Debt instrument, interest rate, effective percentage 13.00% 13.00%   13.00%