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Costs, Estimated Earnings, and Related Billings on Uncompleted Contracts - Contracts in Progress (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Contractors [Abstract]
Costs incurred on uncompleted contracts	$ 7,279aeti_CostsIncurredOnUncompletedContracts	$ 7,271aeti_CostsIncurredOnUncompletedContracts
Estimated earnings	5,208aeti_EstimatedEarnings	2,172aeti_EstimatedEarnings
Total cost and earnings of unbilled contracts	12,487us-gaap_ReceivablesLongTermContractsOrPrograms	9,443us-gaap_ReceivablesLongTermContractsOrPrograms
Billings on uncompleted contracts	(11,481)us-gaap_BilledContractReceivables	(7,152)us-gaap_BilledContractReceivables
Total Costs, estimated earnings, and related billing on uncompleted contracts	$ 1,006aeti_CostsInExcessOfBillingsAndBillingsInExcessOfCostsCurrent	$ 2,291aeti_CostsInExcessOfBillingsAndBillingsInExcessOfCostsCurrent

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- Definition

Costs incurred on uncompleted contracts.

+ References

No definition available.

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- Definition

Costs in excess of billings and billings in excess of costs current.

+ References

No definition available.

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- Definition

Estimated earnings.

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- Definition

Amounts due for billed services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the Company and, at a minimum, one other party. An example would be amounts billed to customers under contracts or programs but not paid as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3(c))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount to be collected within one year of the balance sheet date (or one operating cycle, if longer) from customers in accordance with the contractual provisions of long-term contracts or programs including amounts billed and unbilled as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3(c))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Subparagraph c

-Article 5

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