2.4.0.81120 - Disclosure - SALE OF ASSETStruefalsefalse1false falsefalseD2013Q3YTDhttp://www.sec.gov/CIK0001286964duration2012-11-01T00:00:002013-07-31T00:00:001true 1us-gaap_PropertyPlantAndEquipmentImpairmentOrDisposalAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0SALE OF ASSETS2false 2hlb_SaleOfPlantAssetsTextBlockhlb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div style="font-size:10.0pt;font-family:Times New Roman;"> 12.       SALE OF ASSETS   The Company entered into an asset purchase agreement on January 3, 2013, with FCA Co-op for the sale of the Company’s grain storage and handling facilities. The sale closed on February 1, 2013, for approximately $3.7 million. The net proceeds of the sale were used to repay AgStar debt.   The Company entered into an asset purchase agreement on January 22, 2013, with Guardian Energy for the sale of the ethanol assets.  The purchase price was to be the sum of $55,000,000 plus closing net working capital, less the amount owed on the closing date under assumed debt.  On April 4, 2013, the Company terminated the asset purchase agreement dated January 22, 2013 between the Company and Guardian. </div>falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure of sale of plant assets.No definition available.false0SALE OF ASSETSfalseSALE OF ASSETSUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.heronlakebioenergy.com/role/DisclosureSaleOfAssets12