REVENUE, Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 28, 2019	Apr. 29, 2018	Apr. 28, 2019	Apr. 29, 2018
Disaggregation of Revenue [Abstract]
Revenue	$ 131,580	$ 130,779	$ 256,291	$ 254,225
Over Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	123,853		244,699
At a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Revenue	7,727		11,592
Taiwan [Member]
Disaggregation of Revenue [Abstract]
Revenue	56,469		114,209
Korea [Member]
Disaggregation of Revenue [Abstract]
Revenue	38,038		73,275
United States [Member]
Disaggregation of Revenue [Abstract]
Revenue	26,742		49,215
Europe [Member]
Disaggregation of Revenue [Abstract]
Revenue	8,435		16,788
China [Member]
Disaggregation of Revenue [Abstract]
Revenue	1,467		1,730
Other [Member]
Disaggregation of Revenue [Abstract]
Revenue	429		1,074
IC [Member]
Disaggregation of Revenue [Abstract]
Revenue	98,587		193,466
High-end [Member]
Disaggregation of Revenue [Abstract]
Revenue	38,429		72,995
Mainstream [Member]
Disaggregation of Revenue [Abstract]
Revenue	60,158		120,471
FPD [Member]
Disaggregation of Revenue [Abstract]
Revenue	32,993		62,825
High-end [Member]
Disaggregation of Revenue [Abstract]
Revenue	22,956		44,422
Mainstream [Member]
Disaggregation of Revenue [Abstract]
Revenue	$ 10,037		$ 18,403