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v2.4.1.9

Intangible and Other Assets, net (Details 2) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Finite Lived Intangible Assets And Deferred Financing Costs |  |  |
Deferred financing costs, gross carrying amount | $ 41,790,000 us-gaap_DeferredFinanceCostsGross | $ 56,192,000 us-gaap_DeferredFinanceCostsGross |
Deferred financing costs, accumulated amortization | (17,995,000)us-gaap_AccumulatedAmortizationDeferredFinanceCosts | (33,387,000)us-gaap_AccumulatedAmortizationDeferredFinanceCosts |
Intangible assets and deferred financing costs, gross carrying amount | 356,016,000 exh_FiniteLivedIntangibleAssetsAndDeferredDebtIssuanceCostsGross | 281,664,000 exh_FiniteLivedIntangibleAssetsAndDeferredDebtIssuanceCostsGross |
Intangible assets and deferred financing costs, accumulated amortization | (190,518,000)exh_FiniteLivedIntangibleAssetsAndDeferredDebtIssuanceCostsAccumulatedAmortization | (189,616,000)exh_FiniteLivedIntangibleAssetsAndDeferredDebtIssuanceCostsAccumulatedAmortization |
Amortization of deferred financing costs | 5,994,000 us-gaap_AmortizationOfFinancingCosts | 7,690,000 us-gaap_AmortizationOfFinancingCosts | 7,243,000 us-gaap_AmortizationOfFinancingCosts
Amortization of intangible costs | 18,800,000 us-gaap_AmortizationOfIntangibleAssets | 15,100,000 us-gaap_AmortizationOfIntangibleAssets | 18,100,000 us-gaap_AmortizationOfIntangibleAssets
Marketing Related |  |  |
Finite Lived Intangible Assets And Deferred Financing Costs |  |  |
Gross Carrying Amount | 2,968,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = exh_MarketingRelatedMember | 3,021,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = exh_MarketingRelatedMember |
Accumulated Amortization | (2,015,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = exh_MarketingRelatedMember | (1,873,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = exh_MarketingRelatedMember |
Marketing Related | Minimum |  |  |
Finite Lived Intangible Assets And Deferred Financing Costs |  |  |
Useful life | 5 years |  |
Marketing Related | Maximum |  |  |
Finite Lived Intangible Assets And Deferred Financing Costs |  |  |
Useful life | 20 years |  |
Customer related |  |  |
Finite Lived Intangible Assets And Deferred Financing Costs |  |  |
Gross Carrying Amount | 188,096,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 163,051,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |
Accumulated Amortization | (107,777,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | (98,336,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |
Customer related | Minimum |  |  |
Finite Lived Intangible Assets And Deferred Financing Costs |  |  |
Useful life | 10 years |  |
Customer related | Maximum |  |  |
Finite Lived Intangible Assets And Deferred Financing Costs |  |  |
Useful life | 25 years |  |
Technology Based |  |  |
Finite Lived Intangible Assets And Deferred Financing Costs |  |  |
Gross Carrying Amount | 3,843,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = exh_TechnologyBasedMember | 4,149,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = exh_TechnologyBasedMember |
Accumulated Amortization | (3,480,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = exh_TechnologyBasedMember | (3,604,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = exh_TechnologyBasedMember |
Useful life | 20 years |  |
Contract Based |  |  |
Finite Lived Intangible Assets And Deferred Financing Costs |  |  |
Gross Carrying Amount | 119,319,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = exh_ContractBasedMember | 55,251,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = exh_ContractBasedMember |
Accumulated Amortization | $ (59,251,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = exh_ContractBasedMember | $ (52,416,000)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = exh_ContractBasedMember |
Contract Based | Minimum |  |  |
Finite Lived Intangible Assets And Deferred Financing Costs |  |  |
Useful life | 2 years |  |
Contract Based | Maximum |  |  |
Finite Lived Intangible Assets And Deferred Financing Costs |  |  |
Useful life | 11 years |  |

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