GEOGRAPHIC AND SIGNIFICANT CUSTOMER INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended										12 Months Ended
	Oct. 31, 2018	Jul. 29, 2018	Apr. 29, 2018	[1]	Jan. 28, 2018	Oct. 29, 2017	Jul. 30, 2017	Apr. 30, 2017	[1]	Jan. 29, 2017	Oct. 31, 2018		Oct. 29, 2017		Oct. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 144,660	$ 136,391	$ 130,779		$ 123,446	$ 120,971	$ 111,579	$ 108,297		$ 109,831	$ 535,276	[1]	$ 450,678	[1]	$ 483,456
Long-lived assets	571,781					535,197					571,781		535,197		506,434
Customer One [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue											78,400		73,600		80,500
IC [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue											416,064		350,260		364,531
FPD [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue											119,212		100,418		118,925
Taiwan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue											237,039		187,818		193,216
Long-lived assets	177,626					186,192					177,626		186,192		176,644
Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue											147,066		122,165		141,017
Long-lived assets	127,764					147,265					127,764		147,265		146,515
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue											112,648		102,040		113,670
Long-lived assets	156,948					180,095					156,948		180,095		173,658
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue											35,540		36,081		33,384
Long-lived assets	6,458					13,372					6,458		13,372		9,617
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 102,985					$ 8,273					102,985		8,273		0
All Other Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue											$ 2,983		$ 2,574		$ 2,169
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%		16.00%		19.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Customer Two [Member]
Customer Account [Abstract]
Percent of net sales accounted for by significant customer											15.00%		16.00%		17.00%

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