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EQUITY INCENTIVE PLAN (Summary of Stock Option Activity and Related Information) (Details) - Employee Stock Option [Member]
 9 Months Ended
Jul. 31, 2017
$ / shares
shares
Stock Options  
Outstanding at October 31, 2016 | shares 107,889
Options granted | shares 0
Options exercised | shares (12,164)
Options cancelled | shares 0
Outstanding at July 31, 2017 | shares 95,725
Weighted Average Exercise Price  
Outstanding at October 31, 2016 | $ / shares $ 20.25
Options granted | $ / shares 0
Options exercised | $ / shares 22.11
Options cancelled | $ / shares 0
Outstanding at July 31, 2017 | $ / shares $ 20.01