Note 3 - Disaggregation of Revenue - Disaggregated Revenue From External Customer (Details) - USD ($)	3 Months Ended		6 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2023	May 31, 2022
Revenue	$ 9,008,000	$ 7,275,000	$ 16,903,000	$ 12,888,000
Farm equipment	9,008,000	7,275,000	16,903,000	12,888,000
Farm Equipment [Member]
Revenue	5,491,000	4,530,000	10,223,000	8,045,000
Farm equipment	5,491,000	4,530,000	10,223,000	8,045,000
Farm Equipment Service Parts [Member]
Revenue	779,000	676,000	1,409,000
Farm equipment	779,000	676,000	1,409,000
Steel Cutting Tools and Inserts [Member]
Revenue	776,000	738,000	1,574,000	1,312,000
Farm equipment	776,000	738,000	1,574,000	1,312,000
Modular Buildings [Member]
Revenue	1,802,000	1,157,000	3,402,000	2,009,000
Farm equipment	1,802,000	1,157,000	3,402,000	2,009,000
Modular Buildings Lease Income [Member]
Revenue	32,000	0	64,000	0
Farm equipment	32,000	0	64,000	0
Product and Service, Other [Member]
Revenue	128,000	174,000	231,000	288,000
Farm equipment	128,000	174,000	231,000	288,000
Agricultural Products [Member]
Revenue	6,368,000	5,316,000	11,813,000	9,477,000
Farm equipment	6,368,000	5,316,000	11,813,000	9,477,000
Agricultural Products [Member] | Farm Equipment [Member]
Revenue	5,491,000	4,530,000	10,223,000	8,045,000
Farm equipment	5,491,000	4,530,000	10,223,000	8,045,000
Agricultural Products [Member] | Farm Equipment Service Parts [Member]
Revenue	779,000	676,000	1,409,000	1,234,000
Farm equipment	779,000	676,000	1,409,000	1,234,000
Agricultural Products [Member] | Steel Cutting Tools and Inserts [Member]
Revenue	0	0	0	0
Farm equipment	0	0	0	0
Agricultural Products [Member] | Modular Buildings [Member]
Revenue	0	0	0	0
Farm equipment	0	0	0	0
Agricultural Products [Member] | Modular Buildings Lease Income [Member]
Revenue	0	0	0	0
Farm equipment	0	0	0	0
Agricultural Products [Member] | Product and Service, Other [Member]
Revenue	98,000	110,000	181,000	198,000
Farm equipment	98,000	110,000	181,000	198,000
Modular Buildings [Member]
Revenue	1,856,000	1,209,000	3,498,000	2,077,000
Farm equipment	1,856,000	1,209,000	3,498,000	2,077,000
Modular Buildings [Member] | Farm Equipment [Member]
Revenue	0	0	0	0
Farm equipment	0	0	0	0
Modular Buildings [Member] | Farm Equipment Service Parts [Member]
Revenue	0	0		0
Farm equipment	0	0		0
Modular Buildings [Member] | Steel Cutting Tools and Inserts [Member]
Revenue	0	0	0	0
Farm equipment	0	0	0	0
Modular Buildings [Member] | Modular Buildings [Member]
Revenue	1,802,000	1,157,000	3,402,000	2,009,000
Farm equipment	1,802,000	1,157,000	3,402,000	2,009,000
Modular Buildings [Member] | Modular Buildings Lease Income [Member]
Revenue	32,000	0	64,000	0
Farm equipment	32,000	0	64,000	0
Modular Buildings [Member] | Product and Service, Other [Member]
Revenue	22,000	52,000	32,000	68,000
Farm equipment	22,000	52,000	32,000	68,000
Tools [Member]
Revenue	784,000	750,000	1,592,000	1,334,000
Farm equipment	784,000	750,000	1,592,000	1,334,000
Tools [Member] | Farm Equipment [Member]
Revenue	0	0	0	0
Farm equipment	0	0	0	0
Tools [Member] | Farm Equipment Service Parts [Member]
Revenue	0	0	0	0
Farm equipment	0	0	0	0
Tools [Member] | Steel Cutting Tools and Inserts [Member]
Revenue	776,000	738,000	1,574,000	1,312,000
Farm equipment	776,000	738,000	1,574,000	1,312,000
Tools [Member] | Modular Buildings [Member]
Revenue	0	0	0	0
Farm equipment	0	0	0	0
Tools [Member] | Modular Buildings Lease Income [Member]
Revenue	0	0	0	0
Farm equipment	0	0	0	0
Tools [Member] | Product and Service, Other [Member]
Revenue	8,000	12,000	18,000	22,000
Farm equipment	$ 8,000	$ 12,000	18,000	22,000
Farm Equipment Service Parts [Member]
Revenue				1,234,000
Farm equipment				$ 1,234,000
Farm Equipment Service Parts [Member] | Farm Equipment Service Parts [Member]
Revenue			0
Farm equipment			$ 0