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Discontinued Operations - Analysis of Assets Sold and Liabilities Assumed by Buyer and Related Gain on Sale from Transaction (Parenthetical) (Detail) $ in Thousands	Aug. 12, 2018 USD ($)
Discontinued Operations And Disposal Groups [Abstract]
Transaction costs	$ 2,180

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- Definition

Sale of assets transaction costs.

+ References

No definition available.

+ Details

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Namespace Prefix:	aeti_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration