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Note 6 - Contract Receivables, Contract Assets and Contract Liabilities (Tables) | 9 Months Ended
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Aug. 31, 2025
Notes Tables |
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] |
|  | August 31, 2025 |  |  | November 30, 2024 |
Receivables |  | $ | 2,024,000 |  |  | $ | 2,373,000 |
Assets |  |  | 659,000 |  |  |  | 213,000 |
Liabilities |  |  | 425,000 |  |  |  | 2,110,000 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration