<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>243</ContextCount>
  <ElementCount>310</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>66</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>8</UnitCount>
  <MyReports>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>995200090 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>995200100 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/StatementConsolidatedBalanceSheets</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>995200105 - Statement - Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/StatementConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>995200200 - Statement - Consolidated Statements of Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/StatementConsolidatedStatementsOfOperations</Role>
      <ShortName>Consolidated Statements of Operations</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>995200300 - Statement - Consolidated Statements of Comprehensive Income (Loss)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/StatementConsolidatedStatementsOfComprehensiveIncomeLoss</Role>
      <ShortName>Consolidated Statements of Comprehensive Income (Loss)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>995200400 - Statement - Consolidated Statements of Stockholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/StatementConsolidatedStatementsOfStockholdersEquity</Role>
      <ShortName>Consolidated Statements of Stockholders' Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>995200405 - Statement - Consolidated Statements of Stockholders' Equity (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/StatementConsolidatedStatementsOfStockholdersEquityParenthetical</Role>
      <ShortName>Consolidated Statements of Stockholders' Equity (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>995200500 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/StatementConsolidatedStatementsOfCashFlows</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>995210101 - Disclosure - DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureDescriptionOfBusinessAndBasisOfPresentation</Role>
      <ShortName>DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>995210201 - Disclosure - REVENUE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureRevenue</Role>
      <ShortName>REVENUE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>995210301 - Disclosure - BALANCE SHEET INFORMATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureBalanceSheetInformation</Role>
      <ShortName>BALANCE SHEET INFORMATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>995210401 - Disclosure - INTANGIBLE ASSETS AND GOODWILL</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureIntangibleAssetsAndGoodwill</Role>
      <ShortName>INTANGIBLE ASSETS AND GOODWILL</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>995210501 - Disclosure - LEASES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureLeases</Role>
      <ShortName>LEASES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>995210601 - Disclosure - LONG-TERM DEBT</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureLongTermDebt</Role>
      <ShortName>LONG-TERM DEBT</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>995210701 - Disclosure - STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockholdersEquityAndEarningsPerShare</Role>
      <ShortName>STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>995210801 - Disclosure - FAIR VALUE MEASUREMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureFairValueMeasurements</Role>
      <ShortName>FAIR VALUE MEASUREMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>995210901 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureDerivativeFinancialInstruments</Role>
      <ShortName>DERIVATIVE FINANCIAL INSTRUMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>995211001 - Disclosure - RESTRUCTURING, ASSET IMPAIRMENTS, AND OTHER CHARGES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureRestructuringAssetImpairmentsAndOtherCharges</Role>
      <ShortName>RESTRUCTURING, ASSET IMPAIRMENTS, AND OTHER CHARGES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>995211101 - Disclosure - STOCK-BASED COMPENSATION</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockBasedCompensation</Role>
      <ShortName>STOCK-BASED COMPENSATION</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>995211201 - Disclosure - INCOME TAX</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureIncomeTax</Role>
      <ShortName>INCOME TAX</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>995211301 - Disclosure - COMMITMENTS AND CONTINGENCIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureCommitmentsAndContingencies</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>995211401 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION AND OTHER DISCLOSURES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureSupplementalCashFlowInformationAndOtherDisclosures</Role>
      <ShortName>SUPPLEMENTAL CASH FLOW INFORMATION AND OTHER DISCLOSURES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>99920102 - Disclosure - DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureDescriptionOfBusinessAndBasisOfPresentationPolicies</Role>
      <ShortName>DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>99930203 - Disclosure - REVENUE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureRevenueTables</Role>
      <ShortName>REVENUE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureRevenue</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>99930303 - Disclosure - BALANCE SHEET INFORMATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureBalanceSheetInformationTables</Role>
      <ShortName>BALANCE SHEET INFORMATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureBalanceSheetInformation</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>99930403 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureIntangibleAssetsAndGoodwillTables</Role>
      <ShortName>INTANGIBLE ASSETS AND GOODWILL (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureIntangibleAssetsAndGoodwill</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>99930503 - Disclosure - LEASES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureLeasesTables</Role>
      <ShortName>LEASES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureLeases</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>99930603 - Disclosure - LONG-TERM DEBT (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureLongTermDebtTables</Role>
      <ShortName>LONG-TERM DEBT (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureLongTermDebt</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>99930703 - Disclosure - STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockholdersEquityAndEarningsPerShareTables</Role>
      <ShortName>STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureStockholdersEquityAndEarningsPerShare</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>99930803 - Disclosure - FAIR VALUE MEASUREMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureFairValueMeasurementsTables</Role>
      <ShortName>FAIR VALUE MEASUREMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureFairValueMeasurements</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>99931003 - Disclosure - RESTRUCTURING, ASSET IMPAIRMENTS, AND OTHER CHARGES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureRestructuringAssetImpairmentsAndOtherChargesTables</Role>
      <ShortName>RESTRUCTURING, ASSET IMPAIRMENTS, AND OTHER CHARGES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureRestructuringAssetImpairmentsAndOtherCharges</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>99931103 - Disclosure - STOCK-BASED COMPENSATION (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockBasedCompensationTables</Role>
      <ShortName>STOCK-BASED COMPENSATION (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureStockBasedCompensation</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>99931203 - Disclosure - INCOME TAX (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureIncomeTaxTables</Role>
      <ShortName>INCOME TAX (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureIncomeTax</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>99931403 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION AND OTHER DISCLOSURES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureSupplementalCashFlowInformationAndOtherDisclosuresTables</Role>
      <ShortName>SUPPLEMENTAL CASH FLOW INFORMATION AND OTHER DISCLOSURES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureSupplementalCashFlowInformationAndOtherDisclosures</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>99940201 - Disclosure - REVENUE (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureRevenueDetails</Role>
      <ShortName>REVENUE (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureRevenueTables</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>99940301 - Disclosure - BALANCE SHEET INFORMATION - Accounts Receivable, Net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureBalanceSheetInformationAccountsReceivableNetDetails</Role>
      <ShortName>BALANCE SHEET INFORMATION - Accounts Receivable, Net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>99940302 - Disclosure - BALANCE SHEET INFORMATION - Inventories (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureBalanceSheetInformationInventoriesDetails</Role>
      <ShortName>BALANCE SHEET INFORMATION - Inventories (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>99940303 - Disclosure - BALANCE SHEET INFORMATION - Warranties - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureBalanceSheetInformationWarrantiesNarrativeDetails</Role>
      <ShortName>BALANCE SHEET INFORMATION - Warranties - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>99940304 - Disclosure - BALANCE SHEET INFORMATION - Warranties - Changes in Product Warranty Obligation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureBalanceSheetInformationWarrantiesChangesInProductWarrantyObligationDetails</Role>
      <ShortName>BALANCE SHEET INFORMATION - Warranties - Changes in Product Warranty Obligation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>99940401 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureIntangibleAssetsAndGoodwillDetails</Role>
      <ShortName>INTANGIBLE ASSETS AND GOODWILL (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureIntangibleAssetsAndGoodwillTables</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>99940402 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Amortization Expense Related to Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureIntangibleAssetsAndGoodwillAmortizationExpenseRelatedToIntangibleAssetsDetails</Role>
      <ShortName>INTANGIBLE ASSETS AND GOODWILL - Amortization Expense Related to Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>99940403 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Estimated Future Amortization Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureIntangibleAssetsAndGoodwillEstimatedFutureAmortizationExpenseDetails</Role>
      <ShortName>INTANGIBLE ASSETS AND GOODWILL - Estimated Future Amortization Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>99940404 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Change in Goodwill (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureIntangibleAssetsAndGoodwillChangeInGoodwillDetails</Role>
      <ShortName>INTANGIBLE ASSETS AND GOODWILL - Change in Goodwill (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>99940501 - Disclosure - LEASES - Components of Operating Lease Cost (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureLeasesComponentsOfOperatingLeaseCostDetails</Role>
      <ShortName>LEASES - Components of Operating Lease Cost (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>99940502 - Disclosure - LEASES - Maturities of Operating Lease Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureLeasesMaturitiesOfOperatingLeaseLiabilitiesDetails</Role>
      <ShortName>LEASES - Maturities of Operating Lease Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>99940503 - Disclosure - LEASES - Other Lease Cost Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureLeasesOtherLeaseCostInformationDetails</Role>
      <ShortName>LEASES - Other Lease Cost Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>99940601 - Disclosure - LONG-TERM DEBT - Debt Obligation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureLongTermDebtDebtObligationDetails</Role>
      <ShortName>LONG-TERM DEBT - Debt Obligation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>99940602 - Disclosure - LONG-TERM DEBT - Interest Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureLongTermDebtInterestExpenseDetails</Role>
      <ShortName>LONG-TERM DEBT - Interest Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>99940603 - Disclosure - LONG-TERM DEBT - Convertible Senior Notes (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.aei.com/role/DisclosureLongTermDebtConvertibleSeniorNotesDetails</Role>
      <ShortName>LONG-TERM DEBT - Convertible Senior Notes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>99940604 - Disclosure - LONG-TERM DEBT - Credit Agreement (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureLongTermDebtCreditAgreementDetails</Role>
      <ShortName>LONG-TERM DEBT - Credit Agreement (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>99940701 - Disclosure - STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE - Components of and changes in AOCIL, net of income taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockholdersEquityAndEarningsPerShareComponentsOfAndChangesInAocilNetOfIncomeTaxesDetails</Role>
      <ShortName>STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE - Components of and changes in AOCIL, net of income taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>99940702 - Disclosure - STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE - Amounts Reclassified from AOCIL to Consolidated Statements of Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockholdersEquityAndEarningsPerShareAmountsReclassifiedFromAocilToConsolidatedStatementsOfOperationsDetails</Role>
      <ShortName>STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE - Amounts Reclassified from AOCIL to Consolidated Statements of Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>99940703 - Disclosure - STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE - Earnings per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockholdersEquityAndEarningsPerShareEarningsPerShareDetails</Role>
      <ShortName>STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE - Earnings per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>99940704 - Disclosure - STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockholdersEquityAndEarningsPerShareNarrativeDetails</Role>
      <ShortName>STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>99940705 - Disclosure - STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE - Share Repurchase (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockholdersEquityAndEarningsPerShareShareRepurchaseDetails</Role>
      <ShortName>STOCKHOLDERS' EQUITY AND EARNINGS PER SHARE - Share Repurchase (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>99940801 - Disclosure - FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured at Fair Value (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureFairValueMeasurementsAssetsAndLiabilitiesMeasuredAtFairValueDetails</Role>
      <ShortName>FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured at Fair Value (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>99940901 - Disclosure - DERIVATIVE FINANCIAL INSTRUMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureDerivativeFinancialInstrumentsDetails</Role>
      <ShortName>DERIVATIVE FINANCIAL INSTRUMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureDerivativeFinancialInstruments</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>99941001 - Disclosure - RESTRUCTURING, ASSET IMPAIRMENTS, AND OTHER CHARGES - Schedule of Restructuring, Asset Impairments, and Other Charges (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureRestructuringAssetImpairmentsAndOtherChargesScheduleOfRestructuringAssetImpairmentsAndOtherChargesDetails</Role>
      <ShortName>RESTRUCTURING, ASSET IMPAIRMENTS, AND OTHER CHARGES - Schedule of Restructuring, Asset Impairments, and Other Charges (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>99941002 - Disclosure - RESTRUCTURING, ASSET IMPAIRMENTS, AND OTHER CHARGES - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureRestructuringAssetImpairmentsAndOtherChargesNarrativeDetails</Role>
      <ShortName>RESTRUCTURING, ASSET IMPAIRMENTS, AND OTHER CHARGES - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureRestructuringAssetImpairmentsAndOtherChargesTables</ParentRole>
      <Position>60</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>99941003 - Disclosure - RESTRUCTURING, ASSET IMPAIRMENTS, AND OTHER CHARGES - Changes in Restructuring Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureRestructuringAssetImpairmentsAndOtherChargesChangesInRestructuringLiabilitiesDetails</Role>
      <ShortName>RESTRUCTURING, ASSET IMPAIRMENTS, AND OTHER CHARGES - Changes in Restructuring Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>99941004 - Disclosure - RESTRUCTURING, ASSET IMPAIRMENTS, AND OTHER CHARGES - Changes in Restructuring Plans (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureRestructuringAssetImpairmentsAndOtherChargesChangesInRestructuringPlansDetails</Role>
      <ShortName>RESTRUCTURING, ASSET IMPAIRMENTS, AND OTHER CHARGES - Changes in Restructuring Plans (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>99941101 - Disclosure - STOCK-BASED COMPENSATION (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockBasedCompensationDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureStockBasedCompensationTables</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>99941102 - Disclosure - STOCK-BASED COMPENSATION - Share-Based Compensation Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockBasedCompensationShareBasedCompensationExpenseDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - Share-Based Compensation Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>99941103 - Disclosure - STOCK-BASED COMPENSATION - Restricted Stock Units (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockBasedCompensationRestrictedStockUnitsDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - Restricted Stock Units (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>99941104 - Disclosure - STOCK-BASED COMPENSATION - Rabbi trust's assets and liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureStockBasedCompensationRabbiTrustSAssetsAndLiabilitiesDetails</Role>
      <ShortName>STOCK-BASED COMPENSATION - Rabbi trust's assets and liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>99941201 - Disclosure - INCOME TAX - Schedule of Tax Provision and Effective Tax Rate for Income from Continuing Operations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureIncomeTaxScheduleOfTaxProvisionAndEffectiveTaxRateForIncomeFromContinuingOperationsDetails</Role>
      <ShortName>INCOME TAX - Schedule of Tax Provision and Effective Tax Rate for Income from Continuing Operations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>99941202 - Disclosure - INCOME TAX - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureIncomeTaxNarrativeDetails</Role>
      <ShortName>INCOME TAX - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="aeis-20260630x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>99941401 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION AND OTHER DISCLOSURES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.aei.com/role/DisclosureSupplementalCashFlowInformationAndOtherDisclosuresDetails</Role>
      <ShortName>SUPPLEMENTAL CASH FLOW INFORMATION AND OTHER DISCLOSURES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.aei.com/role/DisclosureSupplementalCashFlowInformationAndOtherDisclosuresTables</ParentRole>
      <Position>69</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>aeis-20260630.xsd</File>
    <File>aeis-20260630_cal.xml</File>
    <File>aeis-20260630_def.xml</File>
    <File>aeis-20260630_lab.xml</File>
    <File>aeis-20260630_pre.xml</File>
    <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="aeis-20260630x10q.htm">aeis-20260630x10q.htm</File>
  </InputFiles>
  <SupplementalFiles>
    <File>aeis-20260630x10q003.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="824">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="34">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
