Note 2 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
|
Apr. 30, 2021
USD ($)
|
Apr. 30, 2021
USD ($)
|
Oct. 31, 2020
USD ($)
|
|
| Accounts Receivable, Allowance for Credit Loss, Ending Balance | $ 700 | $ 700 | $ 600 |
| Inventory Valuation Reserves, Ending Balance | $ 0 | 0 | $ 0 |
| Impairment of Long-Lived Assets Held-for-use | $ 0 | ||
| Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member] | |||
| Number of Vendors | 3 | 3 | 3 |
| Warrant Accounting [Member] | |||
| Impact of Reclassification on Consolidated Statement of Operations | $ 500 |
| X | ||||||||||
- Definition Represents the amount of impact of reclassifications on the consolidated statement of operations of an item that is determined to be immaterial and recorded as an out-of-period adjustment. No definition available.
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| X | ||||||||||
- Definition Represents number of significant vendors. 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 The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of valuation reserve for inventory. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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