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v3.19.1

Commitments and Contingencies - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Loss Contingencies [Line Items] |  |
Potential liability related to asset purchase agreement | $ 4,300,000 |
Medical And Hospitalization Insurance Program |  |
Loss Contingencies [Line Items] |  |
Minimum insurance premium | 600,000 | $ 900,000
Insurance reserves |  | $ 130,000
Maximum | Medical And Hospitalization Insurance Program |  |
Loss Contingencies [Line Items] |  |
Liable for all claims per insured annual amount | 70,000 |
Liable for all claims per insured aggregate amount | $ 1,700,000 |

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

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- 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

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- Definition Potential liability related to asset purchase agreement. + References No definition available. + Details
Name: | aeti_PotentialLiabilityRelatedToAssetPurchaseAgreement
Namespace Prefix: | aeti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |