Note 3 - Disaggregation of Revenue - Disaggregated Revenue From External Customer (Details) - USD ($)	3 Months Ended
	Feb. 28, 2023	Feb. 28, 2022
Farm equipment	$ 7,895,000	$ 5,613,000
Farm Equipment [Member]
Farm equipment	4,732,000	3,515,000
Farm Equipment Service Parts [Member]
Farm equipment	630,000	558,000
Steel Cutting Tools and Inserts [Member]
Farm equipment	799,000	574,000
Modular Buildings [Member]
Farm equipment	1,601,000	851,000
Modular Buildings Lease Income [Member]
Farm equipment	32,000	0
Product and Service, Other [Member]
Farm equipment	101,000	115,000
Agricultural Products [Member]
Farm equipment	5,445,000	4,161,000
Agricultural Products [Member] | Farm Equipment [Member]
Farm equipment	4,732,000	3,515,000
Agricultural Products [Member] | Farm Equipment Service Parts [Member]
Farm equipment	630,000	558,000
Agricultural Products [Member] | Steel Cutting Tools and Inserts [Member]
Farm equipment	0	0
Agricultural Products [Member] | Modular Buildings [Member]
Farm equipment	0	0
Agricultural Products [Member] | Modular Buildings Lease Income [Member]
Farm equipment	0	0
Agricultural Products [Member] | Product and Service, Other [Member]
Farm equipment	83,000	88,000
Modular Buildings [Member]
Farm equipment	1,642,000	868,000
Modular Buildings [Member] | Farm Equipment [Member]
Farm equipment	0	0
Modular Buildings [Member] | Farm Equipment Service Parts [Member]
Farm equipment	0	0
Modular Buildings [Member] | Steel Cutting Tools and Inserts [Member]
Farm equipment	0	0
Modular Buildings [Member] | Modular Buildings [Member]
Farm equipment	1,601,000	851,000
Modular Buildings [Member] | Modular Buildings Lease Income [Member]
Farm equipment	32,000	0
Modular Buildings [Member] | Product and Service, Other [Member]
Farm equipment	9,000	17,000
Tools [Member]
Farm equipment	808,000	584,000
Tools [Member] | Farm Equipment [Member]
Farm equipment	0	0
Tools [Member] | Farm Equipment Service Parts [Member]
Farm equipment	0	0
Tools [Member] | Steel Cutting Tools and Inserts [Member]
Farm equipment	799,000	574,000
Tools [Member] | Modular Buildings [Member]
Farm equipment	0	0
Tools [Member] | Modular Buildings Lease Income [Member]
Farm equipment	0	0
Tools [Member] | Product and Service, Other [Member]
Farm equipment	$ 9,000	$ 10,000