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QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 29, 2017 | Jul. 30, 2017 | Apr. 30, 2017 | Jan. 29, 2017 | Oct. 30, 2016 | Jul. 31, 2016 | May 01, 2016 | Jan. 31, 2016 | Oct. 29, 2017 | Oct. 30, 2016 | Nov. 01, 2015
Selected Quarterly Financial Data (Unaudited) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 120,971 | $ 111,579 | $ 108,297 | $ 109,831 | $ 107,368 | [1] | $ 123,209 | $ 122,923 | [2] | $ 129,956 | [3] | $ 450,678 | $ 483,456 | [3],[4] | $ 524,206
Gross profit | 26,442 | 21,717 | 20,157 | 22,999 | 20,533 | [1] | 31,450 | 31,287 | [2] | 35,436 | [3] | 91,315 | 118,706 | [3],[4] | 143,136
Net income | 10,496 | 4,799 | 1,484 | 4,510 | 6,569 | [1] | 11,453 | 14,153 | [2] | 23,501 | [3] | 21,289 | 55,676 | [3],[4] | 56,859
Net income attributable to Photronics, Inc. shareholders | $ 5,386 | $ 4,001 | $ 1,797 | $ 1,946 | $ 5,256 | [1] | $ 8,088 | $ 11,854 | [2] | $ 21,002 | [3] | $ 13,130 | $ 46,200 | [3],[4] | $ 44,625
Earnings per share [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic (in dollars per share) | $ 0.08 | $ 0.06 | $ 0.03 | $ 0.03 | $ 0.08 | [1] | $ 0.12 | $ 0.18 | [2] | $ 0.31 | [3] | $ 0.19 | $ 0.68 | [3],[4] | $ 0.67
Diluted (in dollars per share) | $ 0.08 | $ 0.06 | $ 0.03 | $ 0.03 | $ 0.08 | [1] | $ 0.12 | $ 0.16 | [2] | $ 0.28 | [3] | $ 0.19 | $ 0.64 | [3],[4] | $ 0.63
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale of investments |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 8,940 |  | $ 0
Tax benefits related to prior year |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 212
Taiwan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Selected Quarterly Financial Data (Unaudited) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  | $ 187,818 | 193,216 |  | $ 205,141
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax benefits related to prior year |  |  |  |  | $ 3,000 |  |  | $ 1,800 |  |  |  |  | 4,800 |  |
Investment in Foreign Entity [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale of investments |  |  |  |  |  |  |  |  |  | $ 8,800 |  |  | $ 8,800 |  |
[1] | Includes a tax benefit in Taiwan of $3.0 million related to the recognition of prior period tax benefits and other tax positions no longer deemed necessary.
[2] | Includes a tax benefit in Taiwan of $1.8 million related to prior years.
[3] | Includes $8.8 million gain on sale of investment in a foreign entity.
[4] | Includes tax benefits in Taiwan of $4.8 million primarily related to the recognition of prior period tax benefits and other tax positions no longer deemed necessary.

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