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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Fair value of derivative instruments (Details) - USD ($)
$ in Thousands
Jan. 31, 2020
Oct. 31, 2019
Derivatives, Fair Value [Line Items]    
Derivative assets $ 621 $ 1,391
Derivative liabilities 375 388
Foreign Exchange Forward | Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Derivative assets 347 751
Derivative liabilities 154 99
Foreign Exchange Forward | Not Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Derivative assets 274 640
Derivative liabilities $ 221 $ 289