ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Amount of excess tax benefit	$ 72	$ 924	$ 924
Net cash used in financing activities		12,014	10,467
Net cash provided by operating activities		$ 46,025	118,953
Accounting Standards Update 2016-09
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net cash used in financing activities			2,200
Net cash provided by operating activities			$ 2,200