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Long-Term Debt and Credit Facility Long-Term Debt and Credit Facility (Repaid Convertible Notes and Share Lending Agreement) (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 22, 2013 | Feb. 11, 2008 | Dec. 31, 2013 | Dec. 31, 2012 | Feb. 15, 2013
Debt Instrument [Line Items] |  |  |  |  |
Share lending agreement, number of common stock shares loaned |  | 3,800,000 |  |  |
Own share lending arrangement nominal loan fee per share (in dollars per share) |  | $ 0.0001 |  |  |
Period after payment date that the Borrower agreed to pay the Company an amount equal to any cash dividends that the Company paid on the Borrowed Shares |  | 1 day |  |  |
Return of borrowed shares under share-based, shares | 2,439,558 |  | 2,439,558 | 1,360,442 |
2008 Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Notes repurchased |  |  |  |  | $ 5.2

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- Definition Own Share Lending Agreement, Period after Payment Date Borrower Agrees to Pay Amount Equal to Cash Dividends + References No definition available. + Details
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- Definition Own share lending arrangement nominal loan fee per share. + References No definition available. + Details
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- Definition Own share lending arrangement shares returned. + References No definition available. + Details
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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. + References No definition available. + Details
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- Definition Face (par) amount of the original debt instrument that was repurchased. + References No definition available. + Details
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- Definition The number of shares issued in connection with an own-share lending arrangement entered into by the entity, in contemplation of a convertible debt offering or other financing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 2A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=7656903&loc=SL6757479-112611 + Details
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- Details
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