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Operating Leases (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 01, 2012
Dec. 03, 2011
Nov. 27, 2010
Griffin Land's leases
     
Operating leases of lessor, future minimum rentals to be received      
2013 $ 17,270    
2014 14,142    
2015 11,437    
2016 8,395    
2017 7,794    
Later years 28,065    
Total 87,103    
Rental revenue 17,906 17,964 17,352
Imperial Nurseries, Inc. | Florida Farm Lease
     
Operating leases of lessor, future minimum rentals to be received      
2013 600    
2014 600    
2015 400    
Total 1,600    
Rental revenue 467 474 482
Term of operating lease 6 years    
Percentage of rental payments made during fourth, fifth and sixth years of lease applied to purchase price 50.00%    
Corporate headquarters
     
Operating leases of lessee, future minimum rental payments      
2013 224    
2014 179    
2015 174    
2016 145    
Total minimum lease payments 722    
Rental expense $ 247 $ 249 $ 246