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v2.4.1.9

Long-Term Debt (Details 8) (4.75% convertible senior notes due 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 2014 |  |  |
Long-Term Debt |  |  |
Repayment of long term debt | $ 143.8 us-gaap_RepaymentsOfConvertibleDebt / us-gaap_LongtermDebtTypeAxis = exh_ConvertibleSeniorNotesDueJanuary2014Member |  |
Interest rate (as a percent) | 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = exh_ConvertibleSeniorNotesDueJanuary2014Member |  | 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = exh_ConvertibleSeniorNotesDueJanuary2014Member
Redemption price as percentage of principal amount of debt redeemed | 100.00%us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed / us-gaap_LongtermDebtTypeAxis = exh_ConvertibleSeniorNotesDueJanuary2014Member |  |
Write-off of deferred financing costs |  | $ 0.9 us-gaap_WriteOffOfDeferredDebtIssuanceCost / us-gaap_LongtermDebtTypeAxis = exh_ConvertibleSeniorNotesDueJanuary2014Member |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Definition Percentage of principal amount of debt redeemed. + References No definition available. + Details
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- Definition The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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