INCOME TAXES (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 29, 2017
Components of income before income tax provision [Abstract]
United States	$ (8,379)	$ (9,859)	$ (11,544)
Foreign	59,080	78,430	38,109
Income before income tax provision	50,701	68,571	26,565
Current [Abstract]
Federal	(3,916)	(30)	173
State	11	0	(4)
Foreign	17,777	11,584	3,474
Deferred [Abstract]
Federal	3,673	(3,673)	0
State	10	(24)	15
Foreign	(7,345)	(522)	1,618
Income Tax Expense, Total	10,210	7,335	5,276
Income tax provision reconciliation [Abstract]
U.S. federal income tax at statutory rate	10,647	16,059	9,298
Changes in valuation allowances	2,673	4,554	(3,632)
Foreign tax rate differentials	218	(2,078)	(5,230)
Tax credits	(1,268)	(1,530)	(1,925)
Uncertain tax positions, including reserves, settlements and resolutions	134	(1,791)	(932)
Employee stock option	232	(1,433)	512
Income tax holiday	(2,234)	(2,648)	(743)
Tax reform	0	(3,736)	0
Distributions from foreign subsidiaries	0	0	6,471
Tax on foreign subsidiary earnings	0	0	1,712
Other, net	(192)	(62)	(255)
Income Tax Expense, Total	$ 10,210	$ 7,335	$ 5,276
Effective tax rate	20.10%	10.70%	19.80%
U.S. statutory rate	21.00%	23.42%	35.00%
Income Tax Holiday [Abstract]
Term of tax year holidays	5 years
Dollar effect of income tax holiday	$ 2,200	$ 2,600	$ 700
Per share effect of income tax holiday (in dollars per share)	$ 0.02	$ 0.035
Deferred income tax assets [Abstract]
Net operating losses	$ 32,229	$ 30,805
Reserves not currently deductible	5,013	4,703
Tax credit carryforwards	9,164	9,159
Share-based compensation	860	767
Alternative minimum tax credits	0	3,673
Other	434	1,210
Deferred tax assets	47,700	50,317
Valuation allowances	(27,032)	(24,383)
Deferred tax assets net of valuation allowance	20,668	25,934
Deferred income tax liabilities [Abstract]
Property, plant and equipment	(251)	(8,020)
Other	0	(448)
Deferred income taxes liabilities	(251)	(8,468)
Net deferred income tax assets	20,417	17,466
Reported as [Abstract]
Deferred income tax assets	20,779	18,109
Deferred income tax liabilities	(362)	(643)
Net deferred income tax assets	$ 20,417	17,466
Taiwan Agency of the Ministry of Finance [Member]
Foreign Tax [Abstract]
Foreign statutory rate	20.00%		17.00%
Foreign income tax expense (benefit)		$ (200)
Federal Alternate Minimum [Member]
Foreign Tax [Abstract]
Change in valuation allowance	$ 3,900
Foreign [Member] | Minimum [Member]
Income Tax Holiday [Abstract]
Income tax holiday termination date	October 31, 2017
Foreign [Member] | Maximum [Member]
Income Tax Holiday [Abstract]
Income tax holiday termination date	December 31, 2019