v3.26.3
Note 3 - Disaggregation of Revenue - Disaggregated Revenue From External Customers (Details) - USD ($)
 3 Months Ended 9 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Aug. 31, 2026
Aug. 31, 2025
Revenue $ 5,616,000 $ 6,432,000 $ 20,109,000 $ 17,910,000
Agricultural Products [Member]        
Revenue 3,065,000 2,983,000 11,193,000 9,956,000
Modular Buildings [Member]        
Revenue 2,551,000 3,449,000 8,916,000 7,954,000
Farm Equipment [Member]        
Revenue 2,257,000 1,874,000 8,772,000 7,192,000
Farm Equipment [Member] | Agricultural Products [Member]        
Revenue 2,257,000 1,874,000 8,772,000 7,192,000
Farm Equipment [Member] | Modular Buildings [Member]        
Revenue 0 0 0 0
Farm Equipment Service Parts [Member]        
Revenue 728,000 1,039,000 2,188,000 2,550,000
Farm Equipment Service Parts [Member] | Agricultural Products [Member]        
Revenue 728,000 1,039,000 2,188,000 2,550,000
Farm Equipment Service Parts [Member] | Modular Buildings [Member]        
Revenue 0 0 0 0
Modular Buildings [Member]        
Revenue 2,541,000 3,438,000 8,872,000 7,784,000
Modular Buildings [Member] | Agricultural Products [Member]        
Revenue 0 0 0 0
Modular Buildings [Member] | Modular Buildings [Member]        
Revenue 2,541,000 3,438,000 8,872,000 7,783,000
Modular Buildings Lease Income [Member]        
Revenue 0 3,000 0 75,000
Modular Buildings Lease Income [Member] | Agricultural Products [Member]        
Revenue 0 0 0 0
Modular Buildings Lease Income [Member] | Modular Buildings [Member]        
Revenue 0 3,000 0 75,000
Product and Service, Other [Member]        
Revenue 90,000 78,000 277,000 309,000
Product and Service, Other [Member] | Agricultural Products [Member]        
Revenue 80,000 70,000 233,000 214,000
Product and Service, Other [Member] | Modular Buildings [Member]        
Revenue $ 10,000 $ 8,000 $ 44,000 $ 96,000