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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Oct. 31, 2018 | Apr. 28, 2019
Fair Value, Assets and Liability [Abstract] |  |
Total assets | $ 0 | $ 0
Total liabilities | $ 0 | $ 0
3.25% Convertible Senior Notes Matured 2019 [Member] |  |
Fair and carrying values of the Company's convertible senior notes [Abstract] |  |
Interest rate percentage | 3.25% |
Maturity date of debt | Apr. 01, 2019 |
Fair Value [Member] | 3.25% Convertible Senior Notes Matured 2019 [Member] |  |
Fair and carrying values of the Company's convertible senior notes [Abstract] |  |
Convertible senior notes | $ 62,094 |
Carrying Value [Member] | 3.25% Convertible Senior Notes Matured 2019 [Member] |  |
Fair and carrying values of the Company's convertible senior notes [Abstract] |  |
Convertible senior notes | $ 57,453 |

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