Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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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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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt - 2033 Notes (Details) (USD $) In Thousands, unless otherwise specified	May 03, 2015	Apr. 27, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Net carrying amount of the liability component	$ 221,406us-gaap_ConvertibleDebt	$ 252,268us-gaap_ConvertibleDebt
Convertible Debt \| 0.5% Convertible Senior Notes Due 2033
Debt Instrument [Line Items]
Principle	258,750
Unamortized debt discount	(37,344)
Net carrying amount of the liability component	221,406
Carrying amount of the equity component	$ 49,648		$ 49,600