XML 78 R60.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Long-Lived Asset Impairment (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 CompressorUnit hp | Mar. 31, 2014 CompressorUnit hp
Idle compressor units |  |
Long-Lived Asset Impairment |  |
Number of long-lived assets that the entity determined to retire and either sell or re-utilize key components | 80 exh_LongLivedAssetsToBeRetired / us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis = exh_IdleCompressorUnitsMember | 40 exh_LongLivedAssetsToBeRetired / us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis = exh_IdleCompressorUnitsMember
Horsepower retired from the contract operations business | 30,000 exh_LongLivedAssetsToBeRetiredHorsepower / us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis = exh_IdleCompressorUnitsMember | 11,000 exh_LongLivedAssetsToBeRetiredHorsepower / us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis = exh_IdleCompressorUnitsMember
Long-lived asset impairment | $ 11.3 us-gaap_ImpairmentOfLongLivedAssetsHeldForUse / us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis = exh_IdleCompressorUnitsMember | $ 3.8 us-gaap_ImpairmentOfLongLivedAssetsHeldForUse / us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis = exh_IdleCompressorUnitsMember
Other long lived assets |  |
Long-Lived Asset Impairment |  |
Long-lived asset impairment | $ 1.4 us-gaap_ImpairmentOfLongLivedAssetsHeldForUse / us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis = exh_OtherLongLivedAssetsMember |

X
- Definition The number of long-lived assets that the entity determined to retire and either sell or re-utilize key components. + References No definition available. + Details
Name: | exh_LongLivedAssetsToBeRetired
Namespace Prefix: | exh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The capacity of long-lived assets that the entity determined to retire and either sell or re-utilize key components, expressed in horsepower. + References No definition available. + Details
Name: | exh_LongLivedAssetsToBeRetiredHorsepower
Namespace Prefix: | exh_
Data Type: | num:powerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 225 -Section 45 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28367520&loc=d3e92212-112881 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Impairment -URI http://asc.fasb.org/extlink&oid=6515133 + Details
Name: | us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis=exh_IdleCompressorUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis=exh_OtherLongLivedAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |