EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Calculation of Basic and Diluted Earnings Per Share [Abstract]
Net income attributable to Photronics, Inc. shareholders	$ 55,449	$ 33,820	$ 29,793
Effect of Dilutive Securities [Abstract]
Interest expense on convertible notes, net of tax	0	0	845
Earnings used for diluted earnings per share	$ 55,449	$ 33,820	$ 30,638
Weighted-average Common Shares Computations [Abstract]
Weighted-average common shares used for basic earnings per share (in shares)	61,407	64,866	66,347
Effect of Dilutive Securities [Abstract]
Share-based payment awards (in shares)	592	604	448
Convertible notes (in shares)	0	0	2,360
Potentially dilutive common shares (in shares)	592	604	2,808
Weighted-average common shares used for diluted earnings per share (in shares)	61,999	65,470	69,155
Basic earnings per share (in dollars per share)	$ 0.90	$ 0.52	$ 0.45
Diluted earnings per share (in dollars per share)	$ 0.89	$ 0.52	$ 0.44
Antidilutive Securities [Abstract]
Total potentially dilutive shares excluded (in shares)	331	795	1,250
Share-based Payment Awards [Member]
Antidilutive Securities [Abstract]
Total potentially dilutive shares excluded (in shares)	331	795	1,250

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.