Debt Schedule of Interest Expense On Liability Components (Details) (USD $) In Thousands | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010 | |
| Debt Instrument [Line Items] | ||||
| Amortization of the discount on the liability component | $ 5,336 | $ 7,505 | ||
Convertible Subordinated Debt [Member] | ||||
| Debt Instrument [Line Items] | ||||
| Contractual interest coupon | 625 | 1,398 | 3,420 | 4,193 |
| Amortization of the discount on the liability component | 0 | 2,547 | 5,336 | 7,505 |
| Total interest expense on convertible notes | $ 625 | $ 3,945 | $ 8,756 | $ 11,698 |
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- Definition The amount of contractual interest expense on convertible senior subordinated notes recorded in the Statement of Operations during the period. [Abstract]
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- Definition The component of interest expense representing the noncash expenses charged against earnings in the period to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate caption: Noncash Interest Expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition 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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- Definition Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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