RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands			3 Months Ended								12 Months Ended
	Mar. 09, 2020	Jan. 20, 2018	Oct. 31, 2020	Aug. 02, 2020	May 03, 2020	Feb. 02, 2020	Oct. 31, 2019	Jul. 28, 2019	Apr. 28, 2019	Jan. 27, 2019	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Related Party Agreement [Abstract]
Revenue			$ 149,286	$ 157,895	$ 142,774	$ 159,736	$ 156,256	$ 138,112	$ 131,580	$ 124,712	$ 609,691	$ 550,660	$ 535,276
Accounts receivable			134,470				134,454				134,470	134,454
Customer One [Member]
Related Party Agreement [Abstract]
Revenue											96,400	87,000	78,400
Accounts receivable			$ 32,700				$ 22,200				$ 32,700	22,200
DEMA Associates, LLC [Member]
Related Party Agreement [Abstract]
Consulting agreement period											4 years
Annual cost of consulting contract	$ 100	$ 400
Expenses incurred for goods or services provided by related party during the period											$ 200	$ 400	$ 300