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Note 4 - Contract Receivables, Contract Assets and Contract Liabilities (Tables) | 9 Months Ended
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Aug. 31, 2021
Notes Tables |
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] |
|  | August 31, 2021 |  |  | November 30, 2020 |
Receivables |  | $ | 2,956,000 |  |  | $ | 2,391,000 |
Assets |  |  | 3,000 |  |  |  | 56,000 |
Liabilities |  |  | 752,000 |  |  |  | 276,000 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 + Details
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration