<?xml version="1.0" encoding="utf-8"?>
<FilingSummary xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <Version>2.4.0.8</Version>
  <ProcessingTime />
  <ReportFormat>Html</ReportFormat>
  <ContextCount>128</ContextCount>
  <ElementCount>200</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>38</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>11</UnitCount>
  <MyReports>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/DocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
    </Report>
    <Report>
      <IsDefault>true</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>1002000 - Statement - Balance Sheets Statement</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/BalanceSheetsStatement</Role>
      <ShortName>Balance Sheets Statement</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1002501 - Statement - Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/BalanceSheetsParenthetical</Role>
      <ShortName>Balance Sheets (Parenthetical)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1003000 - Statement - Statements of Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/StatementsOfOperations</Role>
      <ShortName>Statements of Operations</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1004000 - Statement - Statements of Members' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/StatementsOfMembersEquity</Role>
      <ShortName>Statements of Members' Equity</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1004501 - Statement - Statements of Members' Equity (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/StatementsOfMembersEquityParenthetical</Role>
      <ShortName>Statements of Members' Equity (Parenthetical)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>1005000 - Statement - Statement of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/StatementOfCashFlows</Role>
      <ShortName>Statement of Cash Flows</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>1005501 - Statement - Statement of Cash Flows (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/StatementOfCashFlowsParenthetical</Role>
      <ShortName>Statement of Cash Flows (Parenthetical)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>2101100 - Disclosure - Nature of Business and Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/NatureOfBusinessAndSignificantAccountingPolicies</Role>
      <ShortName>Nature of Business and Significant Accounting Policies</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>2102100 - Disclosure - Members' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/MembersEquity</Role>
      <ShortName>Members' Equity</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>2103100 - Disclosure - Inventories</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/Inventories</Role>
      <ShortName>Inventories</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>2104100 - Disclosure - Revolving Credit Loan</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/RevolvingCreditLoan</Role>
      <ShortName>Revolving Credit Loan</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>2105100 - Disclosure - Long-Term Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/LongTermDebt</Role>
      <ShortName>Long-Term Debt</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>2106100 - Disclosure - Lease Commitments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/LeaseCommitments</Role>
      <ShortName>Lease Commitments</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>2107100 - Disclosure - Related-Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/RelatedPartyTransactions</Role>
      <ShortName>Related-Party Transactions</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>2108100 - Disclosure - Commitments and Major Customer and Subsequent Event</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/CommitmentsAndMajorCustomerAndSubsequentEvent</Role>
      <ShortName>Commitments and Major Customer and Subsequent Event</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>2109100 - Disclosure - Risk Management</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/RiskManagement</Role>
      <ShortName>Risk Management</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>2110100 - Disclosure - Fair Value Measurements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/FairValueMeasurements</Role>
      <ShortName>Fair Value Measurements</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>2111100 - Disclosure - Employee Benefit Plan</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/EmployeeBenefitPlan</Role>
      <ShortName>Employee Benefit Plan</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>2112100 - Disclosure - Contingency</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/Contingency</Role>
      <ShortName>Contingency</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>2113100 - Disclosure - Sale of Property</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/SaleOfProperty</Role>
      <ShortName>Sale of Property</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>2201201 - Disclosure - Nature of Business and Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/NatureOfBusinessAndSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Nature of Business and Significant Accounting Policies (Policies)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>2301302 - Disclosure - Nature of Business and Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/NatureOfBusinessAndSignificantAccountingPoliciesTables</Role>
      <ShortName>Nature of Business and Significant Accounting Policies (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>2303301 - Disclosure - Inventories (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/InventoriesTables</Role>
      <ShortName>Inventories (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>2305301 - Disclosure - Long-Term Debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/LongTermDebtTables</Role>
      <ShortName>Long-Term Debt (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>2306301 - Disclosure - Lease Commitments Lease Commitments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/LeaseCommitmentsLeaseCommitmentsTables</Role>
      <ShortName>Lease Commitments Lease Commitments (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>2309301 - Disclosure - Risk Management (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/RiskManagementTables</Role>
      <ShortName>Risk Management (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>2310301 - Disclosure - Fair Value Measurements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/FairValueMeasurementsTables</Role>
      <ShortName>Fair Value Measurements (Tables)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>2401403 - Disclosure - Nature of Business and Significant Accounting Policies Textuals (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/NatureOfBusinessAndSignificantAccountingPoliciesTextualsDetails</Role>
      <ShortName>Nature of Business and Significant Accounting Policies Textuals (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>2401404 - Disclosure - Nature of Business and Significant Accounting Policies Property and Equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/NatureOfBusinessAndSignificantAccountingPoliciesPropertyAndEquipmentDetails</Role>
      <ShortName>Nature of Business and Significant Accounting Policies Property and Equipment (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>2401405 - Disclosure - Nature of Business and Significant Accounting Policies Revenue by Product (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/NatureOfBusinessAndSignificantAccountingPoliciesRevenueByProductDetails</Role>
      <ShortName>Nature of Business and Significant Accounting Policies Revenue by Product (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>2402401 - Disclosure - Members' Equity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/MembersEquityDetails</Role>
      <ShortName>Members' Equity (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>2403402 - Disclosure - Inventories (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/InventoriesDetails</Role>
      <ShortName>Inventories (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>2404401 - Disclosure - Revolving Credit Loan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/RevolvingCreditLoanDetails</Role>
      <ShortName>Revolving Credit Loan (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>2405402 - Disclosure - Long-Term Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/LongTermDebtDetails</Role>
      <ShortName>Long-Term Debt (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>2406402 - Disclosure - Lease Commitments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/LeaseCommitmentsDetails</Role>
      <ShortName>Lease Commitments (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>2406403 - Disclosure - Lease Commitments Fufutre Operating Lease Commitments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/LeaseCommitmentsFufutreOperatingLeaseCommitmentsDetails</Role>
      <ShortName>Lease Commitments Fufutre Operating Lease Commitments (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>2407401 - Disclosure - Related-Party Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/RelatedPartyTransactionsDetails</Role>
      <ShortName>Related-Party Transactions (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>2408401 - Disclosure - Commitments and Major Customer and Subsequent Event (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/CommitmentsAndMajorCustomerAndSubsequentEventDetails</Role>
      <ShortName>Commitments and Major Customer and Subsequent Event (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>2408402 - Disclosure - Commitments and Major Customer and Subsequent Event Purchase Committments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/CommitmentsAndMajorCustomerAndSubsequentEventPurchaseCommittmentsDetails</Role>
      <ShortName>Commitments and Major Customer and Subsequent Event Purchase Committments (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>2409402 - Disclosure - Risk Management (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/RiskManagementDetails</Role>
      <ShortName>Risk Management (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>2410402 - Disclosure - Fair Value Measurements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/FairValueMeasurementsDetails</Role>
      <ShortName>Fair Value Measurements (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>2411401 - Disclosure - Employee Benefit Plan (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/EmployeeBenefitPlanDetails</Role>
      <ShortName>Employee Benefit Plan (Details)</ShortName>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>2413401 - Disclosure - Sale of Property (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.lincolnwayenergy.com/role/SaleOfPropertyDetails</Role>
      <ShortName>Sale of Property (Details)</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_InventoryValuationReserves had a mix of decimals attribute values: -3 0.</Log>
    <Log type="Info">Element us-gaap_LineOfCreditFacilityAmountOutstanding had a mix of decimals attribute values: -5 0.</Log>
    <Log type="Info">Process Flow-Through: 1002000 - Statement - Balance Sheets Statement</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Sep. 30, 2011'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Sep. 30, 2010'</Log>
    <Log type="Info">	Process Flow-Through: Removing column 'Jun. 19, 2007'</Log>
    <Log type="Info">Process Flow-Through: 1002501 - Statement - Balance Sheets (Parenthetical)</Log>
    <Log type="Info">Process Flow-Through: 1003000 - Statement - Statements of Operations</Log>
    <Log type="Info">Process Flow-Through: 1004501 - Statement - Statements of Members' Equity (Parenthetical)</Log>
    <Log type="Info">Process Flow-Through: 1005000 - Statement - Statement of Cash Flows</Log>
    <Log type="Info">Process Flow-Through: 1005501 - Statement - Statement of Cash Flows (Parenthetical)</Log>
  </Logs>
  <InputFiles>
    <File>lwenergy-20130930.xml</File>
    <File>lwenergy-20130930.xsd</File>
    <File>lwenergy-20130930_cal.xml</File>
    <File>lwenergy-20130930_def.xml</File>
    <File>lwenergy-20130930_lab.xml</File>
    <File>lwenergy-20130930_pre.xml</File>
  </InputFiles>
  <SupplementalFiles />
  <BaseTaxonomies />
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
