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SEGMENT INFORMATION (Schedule of Revenues by Geographic Area) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Oct. 31, 2021
Jul. 31, 2021
Apr. 30, 2021
Jan. 31, 2021
Oct. 31, 2020
Jul. 31, 2020
Apr. 30, 2020
Jan. 31, 2020
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues $ 68,982 $ 54,178 $ 57,920 $ 54,115 $ 44,459 $ 45,382 $ 37,126 $ 43,660 $ 235,195 $ 170,627 $ 263,377
United States of America                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 83,218 64,500 95,196
Canada                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 2,636 1,621 2,580
Central & South Americas                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 989 1,543 1,409
Total Americas                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 86,843 67,664 99,185
Germany                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 37,584 24,993 52,002
United Kingdom                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 30,314 19,679 29,349
Italy                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 12,718 8,599 14,772
France                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 14,252 10,797 14,346
Other Europe                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 21,467 14,034 20,028
Total Europe                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 116,335 78,102 130,497
China                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 14,284 14,225 15,706
Other Asia Pacific                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 16,047 10,048 16,858
Total Asia Pacific                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 30,331 24,273 32,564
Foreign                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 $ 1,686 $ 588 $ 1,131