SHORT-TERM AND LONG-TERM DEBT (Details) - USD ($)
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6 Months Ended |
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Jan. 30, 2017 |
Apr. 25, 2016 |
Jul. 15, 2014 |
Apr. 30, 2017 |
Apr. 30, 2016 |
Jan. 31, 2017 |
Oct. 31, 2016 |
| Debt Instrument [Line Items] |
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| Amortization of debt issuance costs included in interest expense |
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$ 200,000
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$ 300,000
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| Secured debt | Term Loan 2022 |
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| Debt Instrument [Line Items] |
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| Debt issuance costs, net |
$ 2,900,000
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3,470,000
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| Term loan principal amount |
400,000,000
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$ 400,000,000
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| Principal Balance |
399,500,000
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399,000,000
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| Installment payments |
1,000,000
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| Original discount |
$ 500,000
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2,153,000
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| Debt instrument, prepayment premium |
1.00%
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| Secured debt | Term Loan 2019 and Term Loan 2021 |
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| Debt Instrument [Line Items] |
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| Debt issuance costs, net |
$ 3,500,000
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3,500,000
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$ 4,900,000
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| Amortization of debt issuance costs included in interest expense |
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500,000
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400,000
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| Repurchased face amount |
493,100,000
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| Original discount |
$ 1,700,000
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| Secured debt | Term loan 2019 |
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| Debt Instrument [Line Items] |
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| Term loan principal amount |
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$ 250,000,000
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| Installment payments |
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$ 600,000
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| Secured debt | Term loan 2021 |
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| Debt Instrument [Line Items] |
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| Term loan principal amount |
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$ 250,000,000
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| Installment payments |
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$ 600,000
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| Convertible senior notes | Convertible senior notes due 2017, 2018 and 2020 |
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| Debt Instrument [Line Items] |
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| Debt issuance costs, net |
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2,900,000
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$ 3,900,000
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| Amortization of debt issuance costs included in interest expense |
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$ 1,000,000
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$ 1,400,000
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| London Interbank offered rate (LIBOR) | Secured debt | Term Loan 2022 |
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| Debt Instrument [Line Items] |
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| Debt instrument, LIBOR interest floor |
0.75%
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| Debt instrument, basis spread on variable rate |
2.50%
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| Base rate | Secured debt | Term Loan 2022 |
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| Debt Instrument [Line Items] |
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| Debt instrument, basis spread on variable rate |
1.50%
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| Debt instrument, interest rate floor |
1.75%
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