Note 4 - Disaggregation of Revenue - Disaggregated Revenue From External Customers (Details) - USD ($)	3 Months Ended
	Feb. 29, 2024	Feb. 28, 2023
Revenue	$ 5,723,000	$ 7,087,000
Agricultural Products [Member]
Revenue	4,236,000	5,445,000
Modular Buildings [Member]
Revenue	1,487,000	1,642,000
Farm Equipment [Member]
Revenue	3,528,000	4,732,000
Farm Equipment [Member] | Agricultural Products [Member]
Revenue	3,528,000	4,732,000
Farm Equipment [Member] | Modular Buildings [Member]
Revenue	0	0
Farm Equipment Service Parts [Member]
Revenue	642,000	630,000
Farm Equipment Service Parts [Member] | Agricultural Products [Member]
Revenue	642,000	630,000
Farm Equipment Service Parts [Member] | Modular Buildings [Member]
Revenue	0	0
Modular Buildings [Member]
Revenue	1,392,000	1,601,000
Modular Buildings [Member] | Agricultural Products [Member]
Revenue	0	0
Modular Buildings [Member] | Modular Buildings [Member]
Revenue	1,392,000	1,601,000
Modular Buildings Lease Income [Member]
Revenue	36,000	32,000
Modular Buildings Lease Income [Member] | Agricultural Products [Member]
Revenue	0	0
Modular Buildings Lease Income [Member] | Modular Buildings [Member]
Revenue	36,000	32,000
Product and Service, Other [Member]
Revenue	125,000	92,000
Product and Service, Other [Member] | Agricultural Products [Member]
Revenue	66,000	83,000
Product and Service, Other [Member] | Modular Buildings [Member]
Revenue	$ 59,000	$ 9,000