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v2.4.1.9

Commitments and Contingencies - Additional Information (Detail) (Medical And Hospitalization Insurance Program, USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Loss Contingencies [Line Items] |  |
Minimum insurance premium | $ 1,165,000 aeti_LaborAndRelatedInsuranceExpense | $ 879,000 aeti_LaborAndRelatedInsuranceExpense
Insurance reserves | 166,000 aeti_InsuranceReservesIncludedInAccruedPayrollAndBenefits | 254,000 aeti_InsuranceReservesIncludedInAccruedPayrollAndBenefits
Maximum |  |
Loss Contingencies [Line Items] |  |
Liable for all claims per insured annual amount | 70,000 aeti_InsuranceClaimsPerInsuredAmount / us-gaap_OtherCommitmentsAxis = aeti_MedicalAndHospitalizationInsuranceProgramMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Liable for all claims per insured aggregate amount | $ 1,500,000 aeti_InsuranceClaimsAggregateAmount / us-gaap_OtherCommitmentsAxis = aeti_MedicalAndHospitalizationInsuranceProgramMember / us-gaap_RangeAxis = us-gaap_MaximumMember |

X
- Definition Insurance claims aggregate amount + References No definition available. + Details
Name: | aeti_InsuranceClaimsAggregateAmount
Namespace Prefix: | aeti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Insurance claims per insured amount + References No definition available. + Details
Name: | aeti_InsuranceClaimsPerInsuredAmount
Namespace Prefix: | aeti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Insurance reserves included in accrued payroll and benefits. + References No definition available. + Details
Name: | aeti_InsuranceReservesIncludedInAccruedPayrollAndBenefits
Namespace Prefix: | aeti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Labor and related insurance expense. + References No definition available. + Details
Name: | aeti_LaborAndRelatedInsuranceExpense
Namespace Prefix: | aeti_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |