Note 4 - Disaggregation of Revenue - Disaggregated Revenue From External Customers (Details) - USD ($)	3 Months Ended
	Feb. 28, 2025	Feb. 29, 2024
Revenue	$ 5,141,000	$ 5,723,000
Agricultural Products [Member]
Revenue	2,948,000	4,236,000
Modular Buildings [Member]
Revenue	2,193,000	1,487,000
Farm Equipment [Member]
Revenue	1,994,000	3,528,000
Farm Equipment [Member] | Agricultural Products [Member]
Revenue	1,994,000	3,528,000
Farm Equipment [Member] | Modular Buildings [Member]
Revenue	0	0
Farm Equipment Service Parts [Member]
Revenue	883,000	642,000
Farm Equipment Service Parts [Member] | Agricultural Products [Member]
Revenue	883,000	642,000
Farm Equipment Service Parts [Member] | Modular Buildings [Member]
Revenue	0	0
Modular Buildings [Member]
Revenue	2,119,000	1,392,000
Modular Buildings [Member] | Agricultural Products [Member]
Revenue	0	0
Modular Buildings [Member] | Modular Buildings [Member]
Revenue	2,119,000	1,392,000
Modular Buildings Lease Income [Member]
Revenue	46,000	36,000
Modular Buildings Lease Income [Member] | Agricultural Products [Member]
Revenue	0	0
Modular Buildings Lease Income [Member] | Modular Buildings [Member]
Revenue	46,000	36,000
Product and Service, Other [Member]
Revenue	99,000	125,000
Product and Service, Other [Member] | Agricultural Products [Member]
Revenue	71,000	66,000
Product and Service, Other [Member] | Modular Buildings [Member]
Revenue	$ 28,000	$ 59,000