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Note 8 - Revenue, Deferred Revenue and Accounts Receivable (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
May 31, 2023 | May 31, 2022 | May 31, 2023 | May 31, 2022 | Feb. 28, 2023 | Nov. 30, 2022 | Feb. 28, 2022 | Nov. 30, 2021
Standard Product Warranty, Term (Year) |  |  | 1 year |  |  |  |  |
Extended Product Warranty, Term (Year) |  |  | 3 years |  |  |  |  |
Accounts Receivable, after Allowance for Credit Loss, Current, Total | $ 4,193 |  | $ 4,193 |  | $ 4,200 | $ 5,915 | $ 1,100 | $ 1,700
Contract with Customer, Liability | 600 |  | 600 |  | 1,300 | 800 | 800 | 1,100
Contract With Customer, Liability, Revenue Recognized During Period | 80 | $ 20 | 100 | $ 30 |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss | $ 10 |  | $ 10 |  | $ 10 | $ 10 | $ 10 | $ 10

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