Note 6 - Loan Payable:	9 Months Ended
Mar. 31, 2013
Debt Disclosure [Text Block]	6. LOAN PAYABLE: As of March 31, 2013, PA-1, the Company’s wholly-owned subsidiary, owes $7,754,000 under the terms of the Pennvest Loan related to the construction of the Kreider 1 System. The terms of the Pennvest Loan provide for funding of up to $7,754,000 which is to be repaid by interest-only payments for three years, followed by an additional ten-year amortization of principal. The Pennvest Loan accrues interest at 2.547% for years 1 through 5 and 3.184% for years 6 through maturity. The Pennvest Loan requires minimum annual principal payments of approximately $574,000 in fiscal year 2013, $704,000 in fiscal year 2014, $723,000 in fiscal year 2015, $741,000 in fiscal year 2016, $760,000 in fiscal year 2017 and $4,252,000 thereafter. The Pennvest Loan is collateralized by the Kreider 1 facility and by a pledge of all revenues generated from Kreider 1 including, but not limited to, revenues generated from nutrient reduction credit sales and by-product sales. In addition, in consideration for the excess credit risk associated with the project, Pennvest is entitled to participate in the profits from Kreider 1 calculated on a net cash flow basis, as defined. For each of the three months ended March 31, 2013 and 2012, the Company has incurred interest expense related to the Pennvest Loan of $49,374. For the nine months ended March 31, 2013 and 2012, the Company has incurred interest expense related to the Pennvest Loan of $148,120 and $142,900, respectively, of which $15,793 and $136,920 has been capitalized as a cost of Kreider 1 for the nine months ended March 31, 2013 and 2012, respectively. Based on the limited development of the depth and breadth of the Pennsylvania nutrient reduction credit market to date, Pennvest and PA-1 have commenced negotiations related to forbearance and/or re-structuring its obligations pursuant to the Pennvest Loan. In the context of such negotiations, PA-1 has elected not to make interest payments to Pennvest on the Pennvest Loan since January 2013. As a result, Pennvest has the right to declare the Pennvest Loan in default, and, therefore, the Company has re-classified the Pennvest Loan as a current liability on its balance sheet. It is not possible at this date to predict the outcome of such negotiations. Subject to the results of the negotiations with Pennvest and pending development of a more robust market for nutrient reductions in Pennsylvania, Bion anticipates that it will be necessary to evaluate various options with regard to Kreider 1. See also Note 1 above. In connection with the Pennvest Loan, the Company provided a ‘technology guaranty’ regarding nutrient reduction performance of Kreider 1 which was structured to expire when Kreider 1’s nutrient reduction performance had been demonstrated. On August 1, 2012 the Company informed Pennvest that the Kreider 1 System had surpassed the requisite performance criteria and that, as a result, the Company’s ‘technology guaranty’ had been met.

Note 6 - Loan Payable:

9 Months Ended

Mar. 31, 2013

6. LOAN PAYABLE:

As of March 31, 2013, PA-1, the Company’s wholly-owned subsidiary, owes $7,754,000 under the terms of the Pennvest Loan related to the construction of the Kreider 1 System. The terms of the Pennvest Loan provide for funding of up to $7,754,000 which is to be repaid by interest-only payments for three years, followed by an additional ten-year amortization of principal. The Pennvest Loan accrues interest at 2.547% for years 1 through 5 and 3.184% for years 6 through maturity. The Pennvest Loan requires minimum annual principal payments of approximately $574,000 in fiscal year 2013, $704,000 in fiscal year 2014, $723,000 in fiscal year 2015, $741,000 in fiscal year 2016, $760,000 in fiscal year 2017 and $4,252,000 thereafter. The Pennvest Loan is collateralized by the Kreider 1 facility and by a pledge of all revenues generated from Kreider 1 including, but not limited to, revenues generated from nutrient reduction credit sales and by-product sales. In addition, in consideration for the excess credit risk associated with the project, Pennvest is entitled to participate in the profits from Kreider 1 calculated on a net cash flow basis, as defined. For each of the three months ended March 31, 2013 and 2012, the Company has incurred interest expense related to the Pennvest Loan of $49,374. For the nine months ended March 31, 2013 and 2012, the Company has incurred interest expense related to the Pennvest Loan of $148,120 and $142,900, respectively, of which $15,793 and $136,920 has been capitalized as a cost of Kreider 1 for the nine months ended March 31, 2013 and 2012, respectively. Based on the limited development of the depth and breadth of the Pennsylvania nutrient reduction credit market to date, Pennvest and PA-1 have commenced negotiations related to forbearance and/or re-structuring its obligations pursuant to the Pennvest Loan. In the context of such negotiations, PA-1 has elected not to make interest payments to Pennvest on the Pennvest Loan since January 2013. As a result, Pennvest has the right to declare the Pennvest Loan in default, and, therefore, the Company has re-classified the Pennvest Loan as a current liability on its balance sheet. It is not possible at this date to predict the outcome of such negotiations. Subject to the results of the negotiations with Pennvest and pending development of a more robust market for nutrient reductions in Pennsylvania, Bion anticipates that it will be necessary to evaluate various options with regard to Kreider 1. See also Note 1 above.

In connection with the Pennvest Loan, the Company provided a ‘technology guaranty’ regarding nutrient reduction performance of Kreider 1 which was structured to expire when Kreider 1’s nutrient reduction performance had been demonstrated. On August 1, 2012 the Company informed Pennvest that the Kreider 1 System had surpassed the requisite performance criteria and that, as a result, the Company’s ‘technology guaranty’ had been met.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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