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SEGMENT INFORMATION (Schedule of Revenues by Geographic Area) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Oct. 31, 2019
Jul. 31, 2019
Apr. 30, 2019
Jan. 31, 2019
Oct. 31, 2018
Jul. 31, 2018
Apr. 30, 2018
Jan. 31, 2018
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues $ 59,989 $ 58,501 $ 70,674 $ 74,213 $ 83,051 $ 78,752 $ 70,424 $ 68,444 $ 263,377 $ 300,671 $ 243,667
United States of America [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 95,196 87,231 70,912
Canada [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 2,580 2,915 3,801
Central & South America [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 1,409 2,194 1,844
Total Americas [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 99,185 92,340 76,557
Germany [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 52,002 62,346 48,786
United Kingdom [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 29,349 34,216 28,019
Italy [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 14,772 16,691 13,416
France [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 14,346 15,815 13,917
Other Europe [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 20,028 32,034 27,583
Total Europe [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 130,497 161,102 131,721
China [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 15,706 27,748 22,456
Other Asia Pacific [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 16,858 17,937 10,238
Asia Pacific [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 32,564 45,685 32,694
Foreign [Member]                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Revenues                 $ 1,131 $ 1,544 $ 2,695