Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Fair Value Measurement (Details Textual)

v3.20.4
Note 4 - Fair Value Measurement (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Nov. 30, 2016
Jan. 31, 2021
Jan. 31, 2020
Oct. 31, 2019
Payment for Contingent Consideration Liability, Financing Activities   $ (0) $ 1,183  
Camfaud [Member]        
Payment for Contingent Consideration Liability, Financing Activities   1,200    
Payment for Contingent Consideration Liability, Operating Activities   500    
Camfaud [Member] | Earnout Payments [Member]        
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High $ 3,100      
Earnout Period (Year) 3 years      
Business Combination, Contingent Consideration, Liability, Total   $ 0   $ 1,700