SHORT-TERM AND LONG-TERM DEBT (Details 3) - 4.0% Convertible senior notes due December 15, 2020 - Convertible notes payable $ in Thousands	Oct. 31, 2016 USD ($)
Debt Instrument [Line Items]
Principal Balance	$ 202,160
Unamortized Discount	(10,954)
Deferred Debt Issuance Costs	(1,183)
Liability component, Net carrying amount	190,023
Equity component, Net carrying amount	$ 43,131

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after accumulated amortization, of debt discount.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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