Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Note 2 - Summary of Significant Accounting Policies (Details Textual)
$ in Thousands
8 Months Ended
Jul. 31, 2019
USD ($)
Oct. 31, 2018
USD ($)
Accounts Receivable, Allowance for Credit Loss, Ending Balance $ 500 $ 700
Inventory Valuation Reserves, Ending Balance 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
Customer Concentration Risk [Member] | Revenue Benchmark [Member]    
Number of Major Customers 0  
Customer Concentration Risk [Member] | Accounts Receivable [Member]    
Number of Major Customers 0