Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Summary of Significant Accounting Policies (Details Textual)

v3.22.0.1
Note 2 - Summary of Significant Accounting Policies (Details Textual)
$ / shares in Units, $ in Thousands
3 Months Ended
Jan. 31, 2022
USD ($)
$ / shares
Oct. 31, 2021
USD ($)
Accounts Receivable, Allowance for Credit Loss, Ending Balance $ 700 $ 700
Inventory Valuation Reserves, Ending Balance $ 0 $ 0
Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member]    
Number of Vendors 3 3
Time Based Only [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares $ 1