Note 4 - Disaggregation of Revenue - Disaggregated Revenue From External Customers (Details) - USD ($)	3 Months Ended		6 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2024	May 31, 2023
Revenue	$ 6,730,000	$ 8,224,000	$ 12,454,000	$ 15,311,000
Agricultural Products [Member]
Revenue	4,555,000	6,368,000	8,792,000	11,813,000
Modular Buildings [Member]
Revenue	2,175,000	1,856,000	3,662,000	3,498,000
Farm Equipment [Member]
Revenue	3,975,000	5,491,000	7,503,000	10,223,000
Farm Equipment [Member] | Agricultural Products [Member]
Revenue	3,975,000	5,491,000	7,503,000	10,223,000
Farm Equipment [Member] | Modular Buildings [Member]
Revenue	0	0	0	0
Farm Equipment Service Parts [Member]
Revenue	500,000	779,000	1,143,000	1,409,000
Farm Equipment Service Parts [Member] | Agricultural Products [Member]
Revenue	500,000	779,000	1,143,000	1,409,000
Farm Equipment Service Parts [Member] | Modular Buildings [Member]
Revenue	0	0	0	0
Modular Buildings [Member]
Revenue	2,100,000	1,802,000	3,491,000	3,402,000
Modular Buildings [Member] | Agricultural Products [Member]
Revenue	0	0	0	0
Modular Buildings [Member] | Modular Buildings [Member]
Revenue	2,100,000	1,802,000	3,491,000	3,402,000
Modular Buildings Lease Income [Member]
Revenue	56,000	32,000	92,000	64,000
Modular Buildings Lease Income [Member] | Agricultural Products [Member]
Revenue	0	0	0	0
Modular Buildings Lease Income [Member] | Modular Buildings [Member]
Revenue	56,000	32,000	92,000	64,000
Product and Service, Other [Member]
Revenue	99,000	120,000	225,000	213,000
Product and Service, Other [Member] | Agricultural Products [Member]
Revenue	80,000	98,000	146,000	181,000
Product and Service, Other [Member] | Modular Buildings [Member]
Revenue	$ 19,000	$ 22,000	$ 79,000	$ 32,000