Note 1 - Summary of Significant Accounting Policies - Disaggregated Revenue From External Customer (Details) - USD ($)	12 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Revenue	$ 28,400,000	$ 24,965,000
Agricultural Products [Member]
Revenue	20,912,000	16,826,000
Modular Buildings [Member]
Revenue	4,734,000	5,678,000
Tools [Member]
Revenue	2,754,000	2,461,000
Farm Equipment [Member]
Revenue	17,825,000	13,631,000
Farm Equipment [Member] | Agricultural Products [Member]
Revenue	17,825,000	13,631,000
Farm Equipment [Member] | Modular Buildings [Member]
Revenue	0	0
Farm Equipment [Member] | Tools [Member]
Revenue	0	0
Farm Equipment Service Parts [Member]
Revenue	2,575,000	2,799,000
Farm Equipment Service Parts [Member] | Agricultural Products [Member]
Revenue	2,575,000	2,799,000
Farm Equipment Service Parts [Member] | Modular Buildings [Member]
Revenue	0	0
Farm Equipment Service Parts [Member] | Tools [Member]
Revenue	0	0
Steel Cutting Tools and Inserts [Member]
Revenue	2,708,000	2,440,000
Steel Cutting Tools and Inserts [Member] | Agricultural Products [Member]
Revenue	0	0
Steel Cutting Tools and Inserts [Member] | Modular Buildings [Member]
Revenue	0	0
Steel Cutting Tools and Inserts [Member] | Tools [Member]
Revenue	2,708,000	2,440,000
Modular Buildings [Member]
Revenue	4,550,000	5,381,000
Modular Buildings [Member] | Agricultural Products [Member]
Revenue	0	0
Modular Buildings [Member] | Modular Buildings [Member]
Revenue	4,550,000	5,381,000
Modular Buildings [Member] | Tools [Member]
Revenue	0	0
Modular Buildings Lease Income [Member]
Revenue	62,000	0
Modular Buildings Lease Income [Member] | Agricultural Products [Member]
Revenue	0	0
Modular Buildings Lease Income [Member] | Modular Buildings [Member]
Revenue	62,000	0
Modular Buildings Lease Income [Member] | Tools [Member]
Revenue	0	0
Product and Service, Other [Member]
Revenue	680,000	714,000
Product and Service, Other [Member] | Agricultural Products [Member]
Revenue	512,000	396,000
Product and Service, Other [Member] | Modular Buildings [Member]
Revenue	122,000	297,000
Product and Service, Other [Member] | Tools [Member]
Revenue	$ 46,000	$ 21,000