Condensed Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 28, 2018	Jan. 29, 2017
Condensed Consolidated Statements of Income (unaudited) [Abstract]
Revenue	$ 123,446	$ 109,831
Cost of goods sold	(95,784)	(86,832)
Gross profit	27,662	22,999
Operating expenses:
Selling, general and administrative	(11,750)	(10,871)
Research and development	(4,104)	(3,485)
Total operating expenses	(15,854)	(14,356)
Operating income	11,808	8,643
Other income (expense):
Interest income and other income (expense)	(3,531)	(1,524)
Interest expense	(574)	(559)
Income before income taxes	7,703	6,560
Income tax benefit (provision)	1,778	(2,050)
Net income	9,481	4,510
Net income attributable to noncontrolling interests	(3,583)	(2,564)
Net income attributable to Photronics, Inc. shareholders	$ 5,898	$ 1,946
Earnings per share:
Basic (in dollars per share)	$ 0.09	$ 0.03
Diluted (in dollars per share)	$ 0.09	$ 0.03
Weighted-average number of common shares outstanding:
Basic (in shares)	68,755	68,176
Diluted (in shares)	69,372	69,169