XML 137 R82.htm IDEA: XBRL DOCUMENT v2.4.1.9

Long-Term Debt (Details 6) (7.25% senior notes due December 2018, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Nov. 30, 2010
Long-Term Debt
Principle amount of senior notes	350.0us-gaap_DebtInstrumentFaceAmount		$ 350.0us-gaap_DebtInstrumentFaceAmount
Interest rate (as a percent)	7.25%us-gaap_DebtInstrumentInterestRateStatedPercentage	7.25%us-gaap_DebtInstrumentInterestRateStatedPercentage	7.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
Twelve month period beginning December 1, 2014
Long-Term Debt
Redemption price as percentage of principal amount	103.625%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = exh_DebtInstrumentRedemptionPeriodFromDecember2014ToNovember2015Member / us-gaap_LongtermDebtTypeAxis = exh_SeniorNotesDueDecember2018Member
Twelve month period beginning December 1, 2015
Long-Term Debt
Redemption price as percentage of principal amount	101.813%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = exh_DebtInstrumentRedemptionPeriodFromDecember2015ToNovember2016Member / us-gaap_LongtermDebtTypeAxis = exh_SeniorNotesDueDecember2018Member
Beginning December 1, 2016 and thereafter
Long-Term Debt
Redemption price as percentage of principal amount	100.00%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_DebtInstrumentRedemptionPeriodAxis = exh_DebtInstrumentRedemptionPeriodFromDecember2016AndThereafterMember / us-gaap_LongtermDebtTypeAxis = exh_SeniorNotesDueDecember2018Member

X

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- 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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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- 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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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration