PDMCX JOINT VENTURE (Details) $ in Thousands	12 Months Ended
	Oct. 31, 2018 USD ($)
Variable Interest Entity [Abstract]
Initial consolidation, gain (loss)	$ 0
Initial term of agreement	2 years
Trigger period for option to purchase, or put, their interest from, or to, other party if ownership interest falls below 20%	6 months
Operating loss	$ (700)
Consolidation liabilities, recourse	0
Maximum loss exposure, amount	$ 15,900
Methodology use for determining whether enterprise is primary beneficiary	As required by the guidance in Topic 810 - “Consolidation” of the Accounting Codification Standards, we evaluated our involvement in PDMCX for the purpose of determining whether we should consolidate its results in our financial statements. The initial step of our evaluation was to determine whether PDMCX was a variable interest entity (“VIE”). Due to its lack of sufficient equity at risk to finance its activities without additional subordinated financial support, we determined that it is a VIE. Having made this determination, we then assessed whether we were the primary beneficiary of the VIE, and concluded that we were the primary beneficiary during the current reporting period; thus, as required, the PDMCX financial results should be consolidated with Photronics, Inc. Our conclusion was based on the fact that we held a controlling financial interest in PDMCX, which resulted from our having the power to direct the activities that most significantly impacted its economic performance, the obligation to absorb losses, and the right to receive benefits that could potentially be significant to PDMCX. Our conclusion that we had the power to direct the activities that most significantly affected the economic performance of PDMCX during the current period was based on our right to appoint the majority of its board of directors, which has, among others, the powers to manage the business (through its rights to appoint and evaluate PDMCX’s management), incur indebtedness, enter into agreements and commitments, and acquire and dispose of PDMCX’s assets. In addition, as a result of the 50.01% variable interest we held during the current period, we had the obligation to absorb losses and the right to receive benefits that could potentially be significant to PDMCX.
Minimum [Member]
Variable Interest Entity [Abstract]
Ownership percentage	20.00%
Maximum [Member]
Variable Interest Entity [Abstract]
Number of business days for obtaining required approvals and clearance for exiting party	3 days
DNP [Member]
Variable Interest Entity [Abstract]
Ownership percentage	49.99%
Photronics Singapore Pte, Ltd [Member]
Variable Interest Entity [Abstract]
Ownership percentage	50.01%
Carrying Amount [Member]
Carrying amounts of assets and liabilities along with exposure to loss related to assets and liabilities [Abstract]
Current assets	$ 9,625
Non-current assets	43,415
Total assets	53,040
Current liabilities	21,205
Non-current liabilities	20
Total liabilities	21,225
Net assets	31,815
Photronics Interest [Member]
Carrying amounts of assets and liabilities along with exposure to loss related to assets and liabilities [Abstract]
Current assets	4,813
Non-current assets	21,708
Total assets	26,521
Current liabilities	10,603
Non-current liabilities	10
Total liabilities	10,613
Net assets	15,908
Primary Beneficiary [Member]
Variable Interest Entity [Abstract]
Financial or other support, amount	18,000
Future support to be provided	62,000
Not Primary Beneficiary [Member]
Variable Interest Entity [Abstract]
Financial or other support, amount	18,000
Future support to be provided	$ 62,000