3.20.1 html 77 257 1 false 44 0 false 16 false false R1.htm 0001000 - Document - Document and Entity Information Document Sheet http://www.highwaterethanol.com/role/DocumentAndEntityInformationDocument Document and Entity Information Document Cover 1 false false R2.htm 1001000 - Statement - Condensed Balance Sheets Sheet http://www.highwaterethanol.com/role/CondensedBalanceSheets Condensed Balance Sheets Statements 2 false false R3.htm 1001001 - Statement - Condensed Balance Sheets Parenthetical Sheet http://www.highwaterethanol.com/role/CondensedBalanceSheetsParenthetical Condensed Balance Sheets Parenthetical Statements 3 false false R4.htm 1002000 - Statement - Condensed Unaudited Statements of Operations Sheet http://www.highwaterethanol.com/role/CondensedUnauditedStatementsOfOperations Condensed Unaudited Statements of Operations Statements 4 false false R5.htm 1004000 - Statement - Statements of Changes in Members' Equity (Unaudited) Sheet http://www.highwaterethanol.com/role/StatementsOfChangesInMembersEquityUnaudited Statements of Changes in Members' Equity (Unaudited) Statements 5 false false R6.htm 1005000 - Statement - Condensed Unaudited Statements of Cash Flows Sheet http://www.highwaterethanol.com/role/CondensedUnauditedStatementsOfCashFlows Condensed Unaudited Statements of Cash Flows Statements 6 false false R7.htm 2101100 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.highwaterethanol.com/role/SummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 7 false false R8.htm 2104100 - Disclosure - Uncertainties Sheet http://www.highwaterethanol.com/role/Uncertainties Uncertainties Notes 8 false false R9.htm 2107100 - Disclosure - Inventories Sheet http://www.highwaterethanol.com/role/Inventories Inventories Notes 9 false false R10.htm 2113100 - Disclosure - Derivative Instruments Sheet http://www.highwaterethanol.com/role/DerivativeInstruments Derivative Instruments Notes 10 false false R11.htm 2116100 - Disclosure - Fair Value Measurements Sheet http://www.highwaterethanol.com/role/FairValueMeasurements Fair Value Measurements Notes 11 false false R12.htm 2119100 - Disclosure - Debt Financing Sheet http://www.highwaterethanol.com/role/DebtFinancing Debt Financing Notes 12 false false R13.htm 2122100 - Disclosure - Leases (Notes) Notes http://www.highwaterethanol.com/role/LeasesNotes Leases (Notes) Notes 13 false false R14.htm 2123100 - Disclosure - Commitments and Contingencies Sheet http://www.highwaterethanol.com/role/CommitmentsAndContingencies Commitments and Contingencies Notes 14 false false R15.htm 2201201 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.highwaterethanol.com/role/SummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.highwaterethanol.com/role/SummaryOfSignificantAccountingPolicies 15 false false R16.htm 2301302 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.highwaterethanol.com/role/SummaryOfSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.highwaterethanol.com/role/SummaryOfSignificantAccountingPolicies 16 false false R17.htm 2307301 - Disclosure - Inventories (Tables) Sheet http://www.highwaterethanol.com/role/InventoriesTables Inventories (Tables) Tables http://www.highwaterethanol.com/role/Inventories 17 false false R18.htm 2313301 - Disclosure - Derivative Instruments (Tables) Sheet http://www.highwaterethanol.com/role/DerivativeInstrumentsTables Derivative Instruments (Tables) Tables http://www.highwaterethanol.com/role/DerivativeInstruments 18 false false R19.htm 2316301 - Disclosure - Fair Value Measurements (Tables) Sheet http://www.highwaterethanol.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://www.highwaterethanol.com/role/FairValueMeasurements 19 false false R20.htm 2319301 - Disclosure - Debt Financing (Tables) Sheet http://www.highwaterethanol.com/role/DebtFinancingTables Debt Financing (Tables) Tables http://www.highwaterethanol.com/role/DebtFinancing 20 false false R21.htm 2322301 - Disclosure - Leases (Tables) Sheet http://www.highwaterethanol.com/role/LeasesTables Leases (Tables) Tables http://www.highwaterethanol.com/role/LeasesNotes 21 false false R22.htm 2323301 - Disclosure - Commitments and Contingencies (Table) Sheet http://www.highwaterethanol.com/role/CommitmentsAndContingenciesTable Commitments and Contingencies (Table) Tables http://www.highwaterethanol.com/role/CommitmentsAndContingencies 22 false false R23.htm 2401403 - Disclosure - Summary of Significant Accounting Policies - Narrative (Details) Sheet http://www.highwaterethanol.com/role/SummaryOfSignificantAccountingPoliciesNarrativeDetails Summary of Significant Accounting Policies - Narrative (Details) Details 23 false false R24.htm 2401404 - Disclosure - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) Sheet http://www.highwaterethanol.com/role/SummaryOfSignificantAccountingPoliciesDisaggregationOfRevenueDetails Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) Details 24 false false R25.htm 2401405 - Disclosure - Summary of Significant Accounting Policies - Summary of Contract Assets and Liabilities (Details) Sheet http://www.highwaterethanol.com/role/SummaryOfSignificantAccountingPoliciesSummaryOfContractAssetsAndLiabilitiesDetails Summary of Significant Accounting Policies - Summary of Contract Assets and Liabilities (Details) Details 25 false false R26.htm 2407402 - Disclosure - Inventories - Schedule of Inventory (Details) Sheet http://www.highwaterethanol.com/role/InventoriesScheduleOfInventoryDetails Inventories - Schedule of Inventory (Details) Details 26 false false R27.htm 2407403 - Disclosure - Inventories - Narrative (Details) Sheet http://www.highwaterethanol.com/role/InventoriesNarrativeDetails Inventories - Narrative (Details) Details 27 false false R28.htm 2413402 - Disclosure - Derivative Instruments - Schedule of Derivatives Instruments (Details) Sheet http://www.highwaterethanol.com/role/DerivativeInstrumentsScheduleOfDerivativesInstrumentsDetails Derivative Instruments - Schedule of Derivatives Instruments (Details) Details 28 false false R29.htm 2413403 - Disclosure - Derivative Instruments - Schedule of Gains (Losses) From Derivative Instruments (Details) Sheet http://www.highwaterethanol.com/role/DerivativeInstrumentsScheduleOfGainsLossesFromDerivativeInstrumentsDetails Derivative Instruments - Schedule of Gains (Losses) From Derivative Instruments (Details) Details 29 false false R30.htm 2416402 - Disclosure - Fair Value Measurements (Details) Sheet http://www.highwaterethanol.com/role/FairValueMeasurementsDetails Fair Value Measurements (Details) Details http://www.highwaterethanol.com/role/FairValueMeasurementsTables 30 false false R31.htm 2419402 - Disclosure - Debt Financing - Schedule of Long-term Debt (Details) Sheet http://www.highwaterethanol.com/role/DebtFinancingScheduleOfLongTermDebtDetails Debt Financing - Schedule of Long-term Debt (Details) Details 31 false false R32.htm 2419403 - Disclosure - Debt Financing - Narrative (Details) Sheet http://www.highwaterethanol.com/role/DebtFinancingNarrativeDetails Debt Financing - Narrative (Details) Details 32 false false R33.htm 2419404 - Disclosure - Debt Financing - Schedule of Maturities of Long-term Debt (Details) Sheet http://www.highwaterethanol.com/role/DebtFinancingScheduleOfMaturitiesOfLongTermDebtDetails Debt Financing - Schedule of Maturities of Long-term Debt (Details) Details 33 false false R34.htm 2422402 - Disclosure - Leases - Narrative (Details) Sheet http://www.highwaterethanol.com/role/LeasesNarrativeDetails Leases - Narrative (Details) Details 34 false false R35.htm 2422403 - Disclosure - Leases - Maturities of Operating and Financing Lease Liabilities (Details) Sheet http://www.highwaterethanol.com/role/LeasesMaturitiesOfOperatingAndFinancingLeaseLiabilitiesDetails Leases - Maturities of Operating and Financing Lease Liabilities (Details) Details 35 false false R36.htm 2422404 - Disclosure - Leases - Lease Cost (Details) Sheet http://www.highwaterethanol.com/role/LeasesLeaseCostDetails Leases - Lease Cost (Details) Details 36 false false R37.htm 2423402 - Disclosure - Commitments and Contingencies - Marketing Agreements (Details) Sheet http://www.highwaterethanol.com/role/CommitmentsAndContingenciesMarketingAgreementsDetails Commitments and Contingencies - Marketing Agreements (Details) Details 37 false false R38.htm 2423403 - Disclosure - Commitments and Contingencies - Forward Contracts (Details) Sheet http://www.highwaterethanol.com/role/CommitmentsAndContingenciesForwardContractsDetails Commitments and Contingencies - Forward Contracts (Details) Details 38 false false All Reports Book All Reports highwater-20200211.xml highwater-20200211.xsd highwater-20200211_cal.xml highwater-20200211_def.xml highwater-20200211_lab.xml highwater-20200211_pre.xml http://fasb.org/srt/2019-01-31 http://xbrl.sec.gov/dei/2018-01-31 http://fasb.org/us-gaap/2019-01-31 true true