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Note 1 - Summary of Significant Accounting Policies - Disaggregated Revenue From External Customer (Details) - USD ($) | 12 Months Ended
--- | ---
Nov. 30, 2020 | Nov. 30, 2019
Revenue | $ 22,409,000 | $ 22,889,000
Farm Equipment [Member] |  |
Revenue | 10,149,000 | 10,435,000
Farm Equipment Service Parts [Member] |  |
Revenue | 2,519,000 | 2,638,000
Steel Cutting Tools and Inserts [Member] |  |
Revenue | 2,308,000 | 2,086,000
Modular Buildings [Member] |  |
Revenue | 6,517,000 | 6,460,000
Modular Buildings Lease Income [Member] |  |
Revenue | 318,000 | 674,000
Product and Service, Other [Member] |  |
Revenue | 598,000 | 596,000
Agricultural Products [Member] |  |
Revenue | 13,085,000 | 13,508,000
Agricultural Products [Member] | Farm Equipment [Member] |  |
Revenue | 10,149,000 | 10,435,000
Agricultural Products [Member] | Farm Equipment Service Parts [Member] |  |
Revenue | 2,519,000 | 2,638,000
Agricultural Products [Member] | Steel Cutting Tools and Inserts [Member] |  |
Revenue |  |
Agricultural Products [Member] | Modular Buildings [Member] |  |
Revenue |  |
Agricultural Products [Member] | Modular Buildings Lease Income [Member] |  |
Revenue |  |
Agricultural Products [Member] | Product and Service, Other [Member] |  |
Revenue | 417,000 | 435,000
Modular Buildings [Member] |  |
Revenue | 6,993,000 | 7,260,000
Modular Buildings [Member] | Farm Equipment [Member] |  |
Revenue |  |
Modular Buildings [Member] | Farm Equipment Service Parts [Member] |  |
Revenue |  |
Modular Buildings [Member] | Steel Cutting Tools and Inserts [Member] |  |
Revenue |  |
Modular Buildings [Member] | Modular Buildings [Member] |  |
Revenue | 6,517,000 | 6,460,000
Modular Buildings [Member] | Modular Buildings Lease Income [Member] |  |
Revenue | 318,000 | 674,000
Modular Buildings [Member] | Product and Service, Other [Member] |  |
Revenue | 158,000 | 126,000
Tools [Member] |  |
Revenue | 2,331,000 | 2,121,000
Tools [Member] | Farm Equipment [Member] |  |
Revenue |  |
Tools [Member] | Farm Equipment Service Parts [Member] |  |
Revenue |  |
Tools [Member] | Steel Cutting Tools and Inserts [Member] |  |
Revenue | 2,308,000 | 2,086,000
Tools [Member] | Modular Buildings [Member] |  |
Revenue |  |
Tools [Member] | Modular Buildings Lease Income [Member] |  |
Revenue |  |
Tools [Member] | Product and Service, Other [Member] |  |
Revenue | $ 23,000 | $ 35,000

X
- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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