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Note 9 - Assets Available for Sale and Assets Held for Lease (Tables)
9 Months Ended
Aug. 31, 2017
Notes Tables  
Disclosure of Long Lived Assets Held-for-sale [Table Text Block]
   
August 31, 2017
   
November 30, 2016
 
Ames, Iowa powder coat paint system
  $
70,000
    $
70,000
 
    $
70,000
    $
70,000
 
Schedule of Property Subject to or Available for Operating Lease [Table Text Block]
   
August 31, 2017
   
November 30, 2016
 
West Union Facility
  $
1,124,715
    $
-
 
Modular Buildings
   
108,225
     
-
 
    $
1,232,940
    $
-