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Long-Term Debt (Details 7) (4.75% convertible senior notes due January 2014, USD $) In Millions, unless otherwise specified | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Jan. 31, 2013 | Mar. 31, 2013 | Dec. 31, 2012
4.75% convertible senior notes due January 2014 |  |  |
Long-Term Debt |  |  |
Redemption price | $ 143.8 |  |
Interest rate (as a percent) | 4.75% |  | 4.75%
Redemption price as percentage of principal amount | 100.00% |  |
Write-off of deferred financing costs |  | $ 0.9 |

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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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