EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
Jan. 27, 2019	Jan. 28, 2018
Calculation of basic and diluted earnings per share [Abstract]
Net income attributable to Photronics, Inc. shareholders	$ 5,267	$ 5,898
Effect of dilutive securities [Abstract]
Effect of dilutive securities	0	0
Earnings used for diluted earnings per share	$ 5,267	$ 5,898
Weighted-average common shares computations [Abstract]
Weighted-average common shares used for basic earnings per share (in shares)	66,583	68,755
Effect of dilutive securities [Abstract]
Share-based payment awards (in shares)	464	617
Potentially dilutive common shares (in shares)	464	617
Weighted-average common shares used for diluted earnings per share (in shares)	67,047	69,372
Basic earnings per share (in dollars per share)	$ 0.08	$ 0.09
Diluted earnings per share (in dollars per share)	$ 0.08	$ 0.09
Antidilutive Securities [Abstract]
Total potentially dilutive shares excluded (in shares)	6,605	7,125
Share-Based Payment Awards [Member]
Antidilutive Securities [Abstract]
Total potentially dilutive shares excluded (in shares)	1,063	1,583
Convertible Notes [Member]
Antidilutive Securities [Abstract]
Total potentially dilutive shares excluded (in shares)	5,542	5,542

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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.

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Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise stock options, restrictive stock units (RSUs), convertible preferred stock of an employee stock ownership plan (ESOP), and other dilutive convertible securities.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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