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Basis of Presentation and Summary of Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Summary of net income attributable to Exterran common stockholders used in the calculation of basic and diluted income per common share    
Income from continuing operations attributable to Exterran stockholders $ 13,429us-gaap_IncomeLossFromContinuingOperations $ 13,869us-gaap_IncomeLossFromContinuingOperations
Income from discontinued operations, net of tax 18,713us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax 18,727us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Less: Net income attributable to participating securities (410)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic (480)us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
Net income attributable to Exterran common stockholders 31,732us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic 32,116us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Potential shares of common stock included in computing diluted income attributable to Exterran common stockholders per common share    
Weighted average common shares outstanding including participating securities 69,179exh_WeightedAverageCommonSharesOutstandingIncludingParticipatingSecurities 66,416exh_WeightedAverageCommonSharesOutstandingIncludingParticipatingSecurities
Less: Weighted average participating securities outstanding (927)exh_WeightedAverageParticipatingSecuritiesOutstanding (1,026)exh_WeightedAverageParticipatingSecuritiesOutstanding
Weighted average common shares outstanding - used in basic income per common share 68,252us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 65,390us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Net dilutive potential common shares issuable:    
On exercise of options and vesting of restricted stock units (in shares) 282us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 616us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
On settlement of employee stock purchase plan shares   2us-gaap_IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements
On exercise of warrants   1,784us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants
Weighted average common shares outstanding - used in diluted income per common share 68,534us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 67,792us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Adjustments to net income attributable to Exterran common stockholders for the diluted earnings (loss) per common share calculation $ 0us-gaap_DilutiveSecurities $ 0us-gaap_DilutiveSecurities