REVENUE, Impact of Adoption on Statement of Income (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Oct. 31, 2019	Jul. 28, 2019	Apr. 28, 2019	Jan. 27, 2019	Oct. 31, 2018	Jul. 29, 2018	Apr. 29, 2018	[1]	Jan. 28, 2018	Oct. 31, 2019		Oct. 31, 2018		Oct. 29, 2017
Income Statement [Abstract]
Revenue	$ 156,256	$ 138,112	$ 131,580	$ 124,712	$ 144,660	$ 136,391	$ 130,779		$ 123,446	$ 550,660	[1]	$ 535,276	[1]	$ 450,678
Cost of goods sold										429,819		403,773		359,363
Gross profit	38,159	30,570	26,010	26,102	35,425	35,597	32,819		27,662	120,841		131,503	[1]	91,315
Provision for taxes										10,210		7,335		5,276
Net income	13,037	9,834	9,852	7,768	16,769	19,797	15,189		9,481	40,491		61,236	[1]	21,289
Noncontrolling interests										10,698		19,181		8,159
Net income attributable to Photronics, Inc. shareholders	$ 9,700	$ 6,347	$ 8,479	$ 5,267	$ 12,487	$ 13,005	$ 10,665		$ 5,898	29,793		$ 42,055	[1]	$ 13,130
Adjustments [Member] | ASU 2014-09 [Member]
Income Statement [Abstract]
Revenue										(4,365)
Cost of goods sold										(2,256)
Gross profit										(2,109)
Provision for taxes										(379)
Net income										(1,730)
Noncontrolling interests										(749)
Net income attributable to Photronics, Inc. shareholders										(981)
Balance without Adoption of Topic 606 [Member] | ASU 2014-09 [Member]
Income Statement [Abstract]
Revenue										546,295
Cost of goods sold										427,563
Gross profit										118,732
Provision for taxes										9,831
Net income										38,761
Noncontrolling interests										9,949
Net income attributable to Photronics, Inc. shareholders										$ 28,812

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