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FAIR VALUE MEASUREMENTS (Tables)
 12 Months Ended
Oct. 31, 2019
FAIR VALUE MEASUREMENTS [Abstract]  
Fair Value and Carrying Amount of Convertible Senior Notes The fair value of our convertible senior notes was a Level 2 measurement, as it was determined using inputs that were either observable market data or could be derived from or corroborated with observable market data. These inputs included our stock price and interest rates offered on debt issued by entities with credit ratings similar to ours. The table below presents the fair and carrying values of our convertible senior notes at October 31, 2018.


 
October 31, 2018
  
   
Fair Value
    
Carrying Value
  
             
3.25% convertible senior notes matured 2019
  
$
62,094
    
$
57,453