RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Oct. 31, 2019	Jul. 28, 2019	Apr. 28, 2019	Jan. 27, 2019	Oct. 31, 2018	Jul. 29, 2018	Apr. 29, 2018	[1]	Jan. 28, 2018	Oct. 31, 2019		Oct. 31, 2018		Oct. 29, 2017
Related Party Agreement [Abstract]
Revenue	$ 156,256	$ 138,112	$ 131,580	$ 124,712	$ 144,660	$ 136,391	$ 130,779		$ 123,446	$ 550,660	[1]	$ 535,276	[1]	$ 450,678
Accounts receivable	134,454				120,515					134,454		120,515
Customer One [Member]
Related Party Agreement [Abstract]
Revenue										87,000		78,400		73,600
Accounts receivable	$ 22,200				$ 23,500					$ 22,200		23,500
DEMA Associates, LLC [Member]
Related Party Agreement [Abstract]
Consulting agreement period										4 years
Annual cost of consulting contract										$ 400
Expenses incurred for goods or services provided by related party during the period										$ 400		300
Information Technology Services Provider [Member]
Related Party Agreement [Abstract]
Expenses incurred for goods or services provided by related party during the period												$ 100		500
Photomask Blank Supplier [Member]
Related Party Agreement [Abstract]
Expenses incurred for goods or services provided by related party during the period														$ 4,500

[1] Includes $0.6 million gain on sale of assets.