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v2.4.1.9

Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Accounts receivable-trade, allowance | $ 315 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent | $ 327 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Inventories, allowance | 73 us-gaap_InventoryAdjustments | 40 us-gaap_InventoryAdjustments
Redeemable convertible preferred stock, Series A, discount | 729 aeti_TemporaryEquityDiscountOnShares | 764 aeti_TemporaryEquityDiscountOnShares
Redeemable convertible preferred stock, par value | $ 0.001 us-gaap_TemporaryEquityParOrStatedValuePerShare | $ 0.001 us-gaap_TemporaryEquityParOrStatedValuePerShare
Redeemable convertible preferred stock, shares authorized | 1,000,000 us-gaap_TemporaryEquitySharesAuthorized | 1,000,000 us-gaap_TemporaryEquitySharesAuthorized
Redeemable convertible preferred stock, shares issued | 1,000,000 us-gaap_TemporaryEquitySharesIssued | 1,000,000 us-gaap_TemporaryEquitySharesIssued
Redeemable convertible preferred stock, shares outstanding | 1,000,000 us-gaap_TemporaryEquitySharesOutstanding | 1,000,000 us-gaap_TemporaryEquitySharesOutstanding
Common stock, par value | $ 0.001 us-gaap_CommonStockParOrStatedValuePerShare | $ 0.001 us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized | 50,000,000 us-gaap_CommonStockSharesAuthorized | 50,000,000 us-gaap_CommonStockSharesAuthorized
Common stock, shares issued | 8,185,323 us-gaap_CommonStockSharesIssued | 8,185,323 us-gaap_CommonStockSharesIssued
Common stock, shares outstanding | 8,008,759 us-gaap_CommonStockSharesOutstanding | 8,008,759 us-gaap_CommonStockSharesOutstanding
Treasury stock, shares | 111,640 us-gaap_TreasuryStockShares | 49,863 us-gaap_TreasuryStockShares
Equity Method Investments |  |
Retained earnings; accumulated statutory reserves in equity method investments | $ 2,100 us-gaap_RetainedEarningsAppropriated / us-gaap_InformationByFinancialStatementLineItemAxis = us-gaap_EquityMethodInvestmentsMember | $ 1,857 us-gaap_RetainedEarningsAppropriated / us-gaap_InformationByFinancialStatementLineItemAxis = us-gaap_EquityMethodInvestmentsMember

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