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Income Taxes - Summary of Difference Between Effective Income Tax Rate Determined by Applying Statutory Income Tax Rate (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Summary of difference between effective income tax rate determined by applying statutory income tax rate
(Provision for) benefit from U.S federal statutory rate	$ 1,611us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ (1,798)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Effect of state income taxes	35us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes	(141)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Non-deductible business meals and entertainment expenses	(486)us-gaap_IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	(18)us-gaap_IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment
Foreign income taxes included in equity in earnings	1,400us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential	551us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Adjustment of net operating loss carry forwards based on IRS audit, accrual to return adjustments and other	(12)aeti_IncomeTaxReconciliationAdjustmentOfNetOperatingLossCarryforwardsAccrualToReturnAndOtherAdjustments	(153)aeti_IncomeTaxReconciliationAdjustmentOfNetOperatingLossCarryforwardsAccrualToReturnAndOtherAdjustments
Change in valuation allowance	(2,214)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	846us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Total (Expense)	$ 334us-gaap_IncomeTaxExpenseBenefit	$ (713)us-gaap_IncomeTaxExpenseBenefit

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- Definition

Income tax reconciliation adjustment of net operating loss carry forwards accrual o return and other adjustments.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit).

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible meals and entertainment expense.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit).

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