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100580 - Disclosure - Income Taxes - Summary of Difference Between Effective Income Tax Rate Determined by Applying Statutory Income Tax Rate (Detail)
(http://www.aeti.com/20161231/taxonomy/role/DisclosureIncomeTaxesSummaryOfDifferenceBetweenEffectiveIncomeTaxRateDeterminedByApplyingStatutoryIncomeTaxRateDetail)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001043186 (http://www.sec.gov/CIK)
Income Tax Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
Income Tax Disclosure [Abstract]
 
 
Summary of difference between effective income tax rate determined by applying statutory income tax rate
 
 
(Provision for) benefit from U.S federal statutory rate
2,385,000  
736,000  
Effect of state income taxes
51,000  
32,000  
Non-deductible business meals and entertainment expenses
(11,000) 
(16,000) 
Foreign income taxes included in equity in earnings
140,000  
269,000  
Accrual to return adjustments and other
81,000  
(653,000) 
Change in valuation allowance
(2,690,000) 
(796,000) 
Total expense
(44,000) 
 
(428,000)