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Real Estate Assets (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 6 Months Ended 6 Months Ended
May 31, 2014
Jun. 01, 2013
May 31, 2014
Jun. 01, 2013
Nov. 30, 2013
May 31, 2014
Imperial's landscape nursery business
Connecticut farm
Jan. 08, 2014
Imperial's landscape nursery business
Connecticut farm
May 31, 2014
Held for Sale
Nov. 30, 2013
Held for Sale
May 31, 2014
Land
Nov. 30, 2013
Land
May 31, 2014
Land
Windsor undeveloped land sale
May 31, 2014
Land
Windsor undeveloped land sale
Nov. 30, 2013
Land
Windsor undeveloped land sale
acre
May 31, 2014
Land
Held for Sale
Nov. 30, 2013
Land
Held for Sale
May 31, 2014
Land improvements
Nov. 30, 2013
Land improvements
May 31, 2014
Land improvements
Minimum
May 31, 2014
Land improvements
Maximum
May 31, 2014
Buildings and improvements
Nov. 30, 2013
Buildings and improvements
May 31, 2014
Buildings and improvements
Minimum
May 31, 2014
Buildings and improvements
Maximum
May 31, 2014
Tenant improvements
Nov. 30, 2013
Tenant improvements
May 31, 2014
Machinery and equipment
Nov. 30, 2013
Machinery and equipment
May 31, 2014
Machinery and equipment
Minimum
May 31, 2014
Machinery and equipment
Maximum
May 31, 2014
Development costs
Nov. 30, 2013
Development costs
May 31, 2014
Development costs
Held for Sale
Nov. 30, 2013
Development costs
Held for Sale
Real estate assets                                                                    
Estimated Useful Lives                                     10 years 30 years     10 years 40 years         3 years 20 years        
Real estate assets, gross $ 213,870   $ 213,870   $ 192,268     $ 1,104 $ 1,104 $ 18,224 $ 17,507       $ 30 $ 30 $ 17,090 $ 15,529     $ 123,711 $ 122,057     $ 16,296 $ 16,126 $ 11,810 $ 4,188     $ 26,739 $ 16,861 $ 1,074 $ 1,074
Accumulated depreciation (73,330)   (73,330)   (61,078)                                                          
Real estate assets, net 140,540   140,540   131,190 1,547                                                        
Property and Equipment, gross 1,220   1,220   15,998   11,485                                                      
Accumulated depreciation 964   964   14,048   9,850                                                      
Depreciation expense 1,374 1,368 2,798 2,748                                                            
Capitalized interest 251   375                                                              
Sales                                                                    
Number of acres sold                           90                                        
Sale price                           9,000                                        
Number of acres of undeveloped land                           268                                        
Proceeds from land sale deposited in escrow         8,860                 8,860                                        
Percentage of cost incurred on sale of land                       34.00% 34.00%                                          
Percentage of total revenue and pretax gain on sale have been recognized                         34.00%                                          
Revenue from sale of land                       277 370                                          
Pretax gain on land sale                       207 276 1,990                                        
Deferred revenue that will be recognized as the construction of roadways connecting the land with existing town roads 7,472   7,472   8,467             5,930 5,930                                          
Estimated pretax gain on sale that would be recognized after incurring total costs and recognizing total revenue                         $ 6,688