Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 31, 2019		Oct. 31, 2018		Oct. 29, 2017
Consolidated Statements of Income [Abstract]
Revenue	$ 550,660	[1]	$ 535,276	[1]	$ 450,678
Cost of goods sold	429,819		403,773		359,363
Gross profit	120,841		131,503	[1]	91,315
Operating expenses:
Selling, general and administrative	52,326		51,395		43,585
Research and development	16,394		14,481		15,862
Total operating expenses	68,720		65,876		59,447
Operating income	52,121		65,627		31,868
Other income (expense):
Interest income and other income (expense), net	5		5,206		(3,068)
Interest expense	(1,425)		(2,262)		(2,235)
Income before income tax provision	50,701		68,571		26,565
Income tax provision	10,210		7,335		5,276
Net income	40,491		61,236	[1]	21,289
Net income attributable to noncontrolling interests	10,698		19,181		8,159
Net income attributable to Photronics, Inc. shareholders	$ 29,793		$ 42,055	[1]	$ 13,130
Earnings per share:
Basic (in dollars per share)	$ 0.45		$ 0.61	[1]	$ 0.19
Diluted (in dollars per share)	$ 0.44		$ 0.59	[1]	$ 0.19
Weighted-average number of common shares outstanding:
Basic (in shares)	66,347		68,829		68,436
Diluted (in shares)	69,155		74,821		69,288

[1] Includes $0.6 million gain on sale of assets.