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Note 16 - Segment Information (Tables)
 12 Months Ended
Nov. 30, 2020
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
Twelve Months Ended November 30, 2020
  
   
Agricultural Products
    
Modular Buildings
    
Tools
    
Consolidated
  
Revenue from external customers
   $
13,085,000
     $
6,993,000
     $
2,331,000
     $
22,409,000
  
Income (loss) from operations
   $
(2,318,000
 )   $
(1,295,000
 )   $
(297,000
 )   $
(3,910,000
 )
Income (loss) before tax
   $
(1,723,000
 )   $
(1,058,000
 )   $
(179,000
 )   $
(2,960,000
 )
Total Assets
   $
12,785,000
     $
3,310,000
     $
2,708,000
     $
18,803,000
  
Capital expenditures
   $
499,000
     $
146,000
     $
48,000
     $
693,000
  
Depreciation & Amortization
   $
481,000
     $
205,000
     $
132,000
     $
818,000
  
   
Twelve Months Ended November 30, 2019
  
   
Agricultural Products
    
Modular Buildings
    
Tools
    
Consolidated
  
Revenue from external customers
   $
13,508,000
     $
7,260,000
     $
2,121,000
     $
22,889,000
  
Income (loss) from operations
   $
(1,599,000
 )   $
208,000
     $
(106,000
 )   $
(1,497,000
 )
Income (loss) before tax
   $
(1,843,000
 )   $
220,000
     $
(146,000
 )   $
(1,769,000
 )
Total Assets
   $
13,169,000
     $
3,584,000
     $
2,594,000
     $
19,347,000
  
Capital expenditures
   $
257,000
     $
147,000
     $
43,000
     $
447,000
  
Depreciation & Amortization
   $
503,000
     $
372,000
     $
129,000
     $
1,004,000