EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 02, 2020	Jul. 28, 2019	Aug. 02, 2020	Jul. 28, 2019
Calculation of basic and diluted earnings per share [Abstract]
Net income attributable to Photronics, Inc. shareholders	$ 10,776	$ 6,347	$ 27,360	$ 20,093
Effect of dilutive securities [Abstract]
Interest expense on convertible notes, net of tax	0	0	0	845
Earnings used for diluted earnings per share	$ 10,776	$ 6,347	$ 27,360	$ 20,938
Weighted-average common shares computations [Abstract]
Weighted-average common shares used for basic earnings per share (in shares)	64,780	66,313	65,090	66,386
Effect of dilutive securities [Abstract]
Share-based payment awards (in shares)	467	257	614	386
Convertible notes (in shares)	0	0	0	3,147
Potentially dilutive common shares (in shares)	467	257	614	3,533
Weighted-average common shares used for diluted earnings per share (in shares)	65,247	66,570	65,704	69,919
Basic earnings per share (in dollars per share)	$ 0.17	$ 0.10	$ 0.42	$ 0.30
Diluted earnings per share (in dollars per share)	$ 0.17	$ 0.10	$ 0.42	$ 0.30
Antidilutive Securities [Abstract]
Potentially dilutive shares excluded (in shares)	985	1,979	723	1,415