PDMCX JOINT VENTURE, Carrying Amounts of Assets and Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Oct. 31, 2019
Carrying amounts of assets and liabilities [Abstract]
Current assets	$ 500,139	$ 427,527
Total assets	1,188,182	1,118,665
Current liabilities	142,939	151,954
Total liabilities	225,916	207,573
Carrying Amount [Member]
Carrying amounts of assets and liabilities [Abstract]
Current assets	56,095	24,142
Noncurrent assets	141,097	114,015
Total assets	197,192	138,157
Current liabilities	31,922	16,889
Noncurrent liabilities	55,676	42,094
Total liabilities	87,598	58,983
Net assets	109,594	79,174
Photronics Interest [Member]
Carrying amounts of assets and liabilities [Abstract]
Current assets	28,053	12,074
Noncurrent assets	70,562	57,019
Total assets	98,615	69,093
Current liabilities	15,964	8,446
Noncurrent liabilities	27,844	21,051
Total liabilities	43,808	29,497
Net assets	$ 54,807	$ 39,596