ACCOUNTING POLICIES Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
New Accounting Pronouncement, Early Adoption [Line Items]
Amount of excess tax benefit		$ 852
Net cash used in financing activities	$ 4,189	1,779
Net cash provided by operating activities	$ 24,968	39,452
Accounting Standards Update 2016-09
New Accounting Pronouncement, Early Adoption [Line Items]
Net cash used in financing activities		2,200
Net cash provided by operating activities		$ 2,200