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Note 16 - Segment Information (Tables)
 6 Months Ended
May 31, 2021
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
Three Months Ended May 31, 2021
  
   
Agricultural Products
    
Modular Buildings
    
Tools
    
Consolidated
  
Revenue from external customers
   $
3,858,000
     $
1,194,000
     $
658,000
     $
5,710,000
  
Income (loss) from operations
   $
188,000
     $
(21,000
 )   $
(18,000
 )   $
149,000
  
Income (loss) before tax
   $
137,000
     $
(28,000
 )   $
(28,000
 )   $
81,000
  
Total Assets
   $
14,271,000
     $
3,725,000
     $
2,674,000
     $
20,670,000
  
Capital expenditures
   $
155,000
     $
-
     $
-
     $
155,000
  
Depreciation & Amortization
   $
87,000
     $
27,000
     $
33,000
     $
147,000
  
   
Three Months Ended May 31, 2020
  
   
Agricultural Products
    
Modular Buildings
    
Tools
    
Consolidated
  
Revenue from external customers
   $
3,071,000
     $
1,799,000
     $
576,000
     $
5,446,000
  
Income (loss) from operations
   $
(722,000
 )   $
(124,000
 )   $
(79,000
 )   $
(925,000
 )
Income (loss) before tax
   $
(784,000
 )   $
(126,000
 )   $
(87,000
 )   $
(997,000
 )
Total Assets
   $
13,948,000
     $
3,772,000
     $
2,660,000
     $
20,380,000
  
Capital expenditures
   $
56,000
     $
85,000
     $
-
     $
141,000
  
Depreciation & Amortization
   $
127,000
     $
71,000
     $
33,000
     $
231,000
  
   
Six Months Ended May 31, 2021
  
   
Agricultural Products
    
Modular Buildings
    
Tools
    
Consolidated
  
Revenue from external customers
   $
7,357,000
     $
2,485,000
     $
1,269,000
     $
11,111,000
  
Income (loss) from operations
   $
(9,000
 )   $
(187,000
 )   $
(24,000
 )   $
(220,000
 )
Income (loss) before tax
   $
(76,000
 )   $
(199,000
 )   $
(44,000
 )   $
(319,000
 )
Total Assets
   $
14,271,000
     $
3,725,000
     $
2,674,000
     $
20,670,000
  
Capital expenditures
   $
310,000
     $
9,000
     $
-
     $
319,000
  
Depreciation & Amortization
   $
185,000
     $
56,000
     $
67,000
     $
308,000
  
   
Six Months Ended May 31, 2020
  
   
Agricultural Products
    
Modular Buildings
    
Tools
    
Consolidated
  
Revenue from external customers
   $
6,023,000
     $
3,256,000
     $
1,193,000
     $
10,472,000
  
Income (loss) from operations
   $
(1,156,000
 )   $
(118,000
 )   $
(120,000
 )   $
(1,394,000
 )
Income (loss) before tax
   $
(1,282,000
 )   $
(120,000
 )   $
(139,000
 )   $
(1,541,000
 )
Total Assets
   $
13,948,000
     $
3,772,000
     $
2,660,000
     $
20,380,000
  
Capital expenditures
   $
298,000
     $
111,000
     $
3,000
     $
412,000
  
Depreciation & Amortization
   $
254,000
     $
139,000
     $
66,000
     $
459,000