GEOGRAPHIC AND SIGNIFICANT CUSTOMER INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	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
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 149,286	$ 157,895	$ 142,774	$ 159,736	$ 156,256	$ 138,112	$ 131,580	$ 124,712	$ 609,691	$ 550,660	$ 535,276
Long-lived assets	631,475				632,441				631,475	632,441
IC [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									418,410	406,191	416,064
FPD [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									191,281	144,469	119,212
Taiwan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									239,101	244,377	237,039
Long-lived assets	123,979				146,467				123,979	146,467
Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									153,052	147,734	147,066
Long-lived assets	110,815				117,755				110,815	117,755
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									104,949	105,045	112,648
Long-lived assets	130,164				130,935				130,164	130,935
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									79,374	19,010	1,157
Long-lived assets	262,800				232,394				262,800	232,394
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									31,501	32,585	35,540
Long-lived assets	$ 3,717				$ 4,890				3,717	4,890
All Other Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									$ 1,714	$ 1,909	$ 1,826
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer One [Member]
Customer Account [Abstract]
Percent of net sales accounted for by significant customer									16.00%	15.00%	15.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer Two [Member]
Customer Account [Abstract]
Percent of net sales accounted for by significant customer									14.00%	16.00%	16.00%