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SEGMENT INFORMATION (Schedule of Revenues by Geographic Area) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Oct. 31, 2020
Jul. 31, 2020
Apr. 30, 2020
Jan. 31, 2020
Oct. 31, 2019
Jul. 31, 2019
Apr. 30, 2019
Jan. 31, 2019
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues $ 44,459 $ 45,382 $ 37,126 $ 43,660 $ 59,989 $ 58,501 $ 70,674 $ 74,213 $ 170,627 $ 263,377 $ 300,671
United States of America [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 64,500 95,196 87,231
Canada [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 1,621 2,580 2,915
Central & South America [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 1,543 1,409 2,194
Total Americas [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 67,664 99,185 92,340
Germany [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 24,993 52,002 62,346
United Kingdom [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 19,679 29,349 34,216
Italy [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 8,599 14,772 16,691
France [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 10,797 14,346 15,815
Other Europe [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 14,034 20,028 32,034
Total Europe [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 78,102 130,497 161,102
China [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 14,225 15,706 27,748
Other Asia Pacific [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 10,048 16,858 17,937
Asia Pacific [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 24,273 32,564 45,685
Foreign [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 $ 588 $ 1,131 $ 1,544