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Marketable Securities and Investments (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 29, 2013
Dec. 30, 2012
Jan. 01, 2012
Schedule of Available-for-sale Securities [Line Items]      
Unrealized (losses) gains on securities, net of tax $ 8 $ 30 $ (59)
Marketable securities 1,319 1,149  
Marketable securities and investments 1,319 1,149  
Equity Securities [Member]
     
Schedule of Available-for-sale Securities [Line Items]      
Cost 871 804  
Gross unrealized holding gains 0 0  
Gross unrealized holding losses (131) (147)  
Market value 740 657  
Fixed Income Securities [Member]
     
Schedule of Available-for-sale Securities [Line Items]      
Cost 308 294  
Gross unrealized holding gains 0 0  
Gross unrealized holding losses 0 0  
Market value 308 294  
Available-for-sale Securities, Other [Member]
     
Schedule of Available-for-sale Securities [Line Items]      
Cost 334 261  
Gross unrealized holding gains 0 0  
Gross unrealized holding losses (63) (63)  
Market value 271 198  
Available-for-sale Securities [Member]
     
Schedule of Available-for-sale Securities [Line Items]      
Cost 1,513 1,359  
Gross unrealized holding gains 0 0  
Gross unrealized holding losses (194) (210)  
Market value $ 1,319 $ 1,149