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Income Taxes - Additional Information (Detail) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 | Dec. 31, 2014 | Dec. 31, 2013
Income Taxes [Line Items] |  |  |
Non-cash savings |  | $ 300,000 us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount |
Recognition of a valuation allowance against deferred tax assets in the U.S |  | 7,800,000 us-gaap_DeferredTaxAssetsValuationAllowance | 5,400,000 us-gaap_DeferredTaxAssetsValuationAllowance
Net operating loss carry forwards, federal |  | 7,400,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic |
Net operating loss carry forwards, state |  | 11,000,000 aeti_IncomeTaxExaminationDeferredIncomeTaxAssetDecreased |
Income tax examination, year under examination |  | 2008 |
Adjusted annual net operating loss carry forward limitation expiration year | 2027 |  |
Effective tax rate |  | 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Adjusted Annual Net Operating Loss Carry Forward Limitation |  |  |
Income Taxes [Line Items] |  |  |
Net operating loss carry forwards related to business combination |  | 7,400,000 aeti_NetOperatingLossCarryforwardsRelatedToBusinessCombination / us-gaap_TaxCreditCarryforwardAxis = aeti_AdjustedAnnualNetOperatingLossCarryForwardLimitationMember |
Adjusted Annual Net Operating Loss Carry Forward Limitation | U.S. federal | Internal Revenue Service (IRS) |  |  |
Income Taxes [Line Items] |  |  |
Net operating loss carry forwards subject to expiration | 299,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember / us-gaap_IncomeTaxAuthorityNameAxis = us-gaap_InternalRevenueServiceIRSMember / us-gaap_TaxCreditCarryforwardAxis = aeti_AdjustedAnnualNetOperatingLossCarryForwardLimitationMember |  |
Minimum |  |  |
Income Taxes [Line Items] |  |  |
Operating loss carry forwards expiration date |  | Dec. 31, 2019 |
Maximum |  |  |
Income Taxes [Line Items] |  |  |
Operating loss carry forwards expiration date |  | Dec. 31, 2031 |

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