<?xml version="1.0" encoding="utf-8"?>
<FilingSummary xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Version>2.4.0.6</Version>
  <ProcessingTime />
  <ReportFormat>Html</ReportFormat>
  <ContextCount>24</ContextCount>
  <ElementCount>144</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>9</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000 - Disclosure - Document And Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document And Entity Information</ShortName>
    </Report>
    <Report>
      <IsDefault>true</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>001 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/ConsolidatedBalanceSheet</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>002 - Statement - Consolidated Balance Sheets (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/ConsolidatedBalanceSheet_Parentheticals</Role>
      <ShortName>Consolidated Balance Sheets (Parentheticals)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>003 - Statement - Consolidated Statements of Income and Comprehensive Income (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/ConsolidatedComprehensiveIncome</Role>
      <ShortName>Consolidated Statements of Income and Comprehensive Income (Unaudited)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>004 - Statement - Consolidated Statements of Cash Flows (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/ConsolidatedCashFlow</Role>
      <ShortName>Consolidated Statements of Cash Flows (Unaudited)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>005 - Disclosure - Note 1 - Basis of Presentation and Description of Business</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/Note</Role>
      <ShortName>Note 1 - Basis of Presentation and Description of Business</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>006 - Disclosure - Note 2 - Earnings Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/Note0</Role>
      <ShortName>Note 2 - Earnings Per Share</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>007 - Disclosure - Note 3 - Line of Credit and Notes Payable</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://addvantagetech.com/role/Note00</Role>
      <ShortName>Note 3 - Line of Credit and Notes Payable</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>008 - Disclosure - Note 4 - Derivative Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/Note000</Role>
      <ShortName>Note 4 - Derivative Financial Instruments</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>009 - Disclosure - Note 5 - Stock Option Plans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/Note0000</Role>
      <ShortName>Note 5 - Stock Option Plans</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>010 - Disclosure - Note 2 - Earnings Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/NoteTables</Role>
      <ShortName>Note 2 - Earnings Per Share (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>011 - Disclosure - Note 5 - Stock Option Plans (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/NoteTables0</Role>
      <ShortName>Note 5 - Stock Option Plans (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>014 - Disclosure - Note 2 - Earnings Per Share (Detail) - Basic and Diluted Earnings Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/BasicandDilutedEarningsPerShareTable</Role>
      <ShortName>Note 2 - Earnings Per Share (Detail) - Basic and Diluted Earnings Per Share</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>015 - Disclosure - Note 3 - Line of Credit and Notes Payable (Detail)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://addvantagetech.com/role/NoteDetail00</Role>
      <ShortName>Note 3 - Line of Credit and Notes Payable (Detail)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>016 - Disclosure - Note 4 - Derivative Financial Instruments (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/NoteDetail000</Role>
      <ShortName>Note 4 - Derivative Financial Instruments (Detail)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>017 - Disclosure - Note 5 - Stock Option Plans (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/NoteDetail0000</Role>
      <ShortName>Note 5 - Stock Option Plans (Detail)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>018 - Disclosure - Note 5 - Stock Option Plans (Detail) - Summary of Stock Options</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/SummaryofStockOptionsTable</Role>
      <ShortName>Note 5 - Stock Option Plans (Detail) - Summary of Stock Options</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>019 - Disclosure - Note 5 - Stock Option Plans (Detail) - Black-Scholes Option Valuation Model Assumptions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/BlackScholesOptionValuationModelAssumptionsTable</Role>
      <ShortName>Note 5 - Stock Option Plans (Detail) - Black-Scholes Option Valuation Model Assumptions</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>020 - Disclosure - Note 5 - Stock Option Plans (Detail) - Compensation Expense Related to Unvested Stock Options</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://addvantagetech.com/role/CompensationExpenseRelatedtoUnvestedStockOptionsTable</Role>
      <ShortName>Note 5 - Stock Option Plans (Detail) - Compensation Expense Related to Unvested Stock Options</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <Logs>
    <Log type="Info">Element us-gaap_DebtInstrumentBasisSpreadOnVariableRate had a mix of decimals attribute values: 3 4.</Log>
    <Log type="Info">'Monetary' elements on report '015 - Disclosure - Note 3 - Line of Credit and Notes Payable (Detail)' had a mix of different decimal attribute values.</Log>
    <Log type="Info">Process Flow-Through: 001 - Statement - Consolidated Balance Sheets</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Jun. 30, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Sep. 30, 2010'</Log>
    <Log type="Info">Process Flow-Through: 002 - Statement - Consolidated Balance Sheets (Parentheticals)</Log>
    <Log type="Info">Process Flow-Through: 003 - Statement - Consolidated Statements of Income and Comprehensive Income (Unaudited)</Log>
    <Log type="Info">Process Flow-Through: 004 - Statement - Consolidated Statements of Cash Flows (Unaudited)</Log>
  </Logs>
  <InputFiles>
    <File>aey-20120630.xml</File>
    <File>aey-20120630.xsd</File>
    <File>aey-20120630_cal.xml</File>
    <File>aey-20120630_def.xml</File>
    <File>aey-20120630_lab.xml</File>
    <File>aey-20120630_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
