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Derivative Instruments Balance Sheet (Details) (USD $)
Apr. 30, 2015
Oct. 31, 2014
Derivatives, Fair Value [Line Items]    
Deposits with broker $ 1,068,962us-gaap_GoodFaithAndMarginDepositsWithBrokerDealers $ 596,945us-gaap_GoodFaithAndMarginDepositsWithBrokerDealers
Derivative instruments 471,720us-gaap_DerivativeInstrumentsAndHedges 257,934us-gaap_DerivativeInstrumentsAndHedges
Corn [Member]    
Derivatives, Fair Value [Line Items]    
Open Positions 1,850,000invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= highwater_CornMember
 
Commodity [Member]    
Derivatives, Fair Value [Line Items]    
In gain position 3,875us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityMember
0us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityMember
In loss position $ (601,117)us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityMember
$ (339,011)us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityMember
Ethanol [Member]    
Derivatives, Fair Value [Line Items]    
Open Positions 2,610,000invest_DerivativeNonmonetaryNotionalAmount
/ us-gaap_DerivativeInstrumentRiskAxis
= highwater_EthanolMember