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Recently Issued Accounting Pronouncements (Narrative) (Details) (USD $) |  |  | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2011 | Jun. 30, 2010 | Jun. 30, 2011 ASC 470-20 [Member] years
Convertible notes payable | $ 300,000,000 | $ 300,000,000 | $ 300,000,000
Convertible senior subordinated notes, stated interest rate |  |  | 2.125%
Convertible senior subordinated notes, issuance date |  |  | May 16, 2007
Convertible senior subordinated notes, effective rate |  |  | 6.90%
Convertible senior subordinated notes, fair value |  |  | 221,900,000
Unamortized debt discount | 36,313,000 | 47,549,000 | 78,100,000
Unamortized debt discount, recognition term (years) |  |  | 7
Fair value of the embedded conversion option recorded in shareholders' equity |  |  | 30,700,000
Long-term deferred tax liability charge |  |  | 30,700,000
Deferred tax assets |  |  | 32,800,000
Notes' issuance costs reclassified from other long-term assets to additional paid-in capital |  |  | 2,000,000
Deferred tax assets related to the reclassification of the Notes' issuance costs |  |  | $ 800,000

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