Convertible Senior Notes (Schedule of 2018 Notes) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2014	Nov. 30, 2013	Jun. 30, 2013
Debt Disclosure [Abstract]
Principal amount	$ 175,000	$ 175,000
Less: Unamortized debt discount	(29,938)
Net carrying amount	145,062		0
Equity component	$ 31,046

Carrying amount of long-term convertible debt as of the balance sheet date, net of the amount due in the next twelve months or greater than the normal operating cycle, if longer. The debt is convertible into another form of financial instrument, typically the entity's common stock.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

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Face (par) amount of debt instrument at time of issuance.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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