Note 9 - Revenue, Deferred Revenue and Accounts Receivable (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|---|
Aug. 31, 2021 |
Aug. 31, 2020 |
Aug. 31, 2021 |
Aug. 31, 2021 |
Aug. 31, 2020 |
Feb. 28, 2021 |
Nov. 30, 2020 |
|
| Standard Product Warranty, Term (Year) | 1 year | ||||||
| Extended Product Warranty, Term (Year) | 3 years | ||||||
| Loss Contingency Accrual, Ending Balance | $ 200 | ||||||
| Loss Contingency Accrual, Period Increase (Decrease), Total | $ 60 | $ 100 | |||||
| Product Warranty Expense | $ 400 | 400 | |||||
| Sales Commissions and Fees | 50 | $ 100 | 400 | $ 100 | |||
| Accounts Receivable, Allowance for Credit Loss, Ending Balance | 20 | $ 20 | 20 | $ 10 | |||
| Shipping and Handling [Member] | |||||||
| Selling, General and Administrative Expense, Total | $ 400 | $ 30 | $ 1,400 | $ 30 | |||
| X | ||||||||||
- Definition Represents the term associated with the extended product warranty. No definition available.
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| X | ||||||||||
- Definition Represents the term associated with the standard product warranty. No definition available.
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| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of loss contingency liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of increase (decrease) in loss contingency liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The expense charged against earnings for the period pertaining to standard and extended warranties on the entity's goods and services granted to customers. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Primarily represents commissions incurred in the period based upon the sale by commissioned employees or third parties of the entity's goods or services, and fees for sales assistance or product enhancements performed by third parties (such as a distributor or value added reseller). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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