Note 7 - Loan Payable	12 Months Ended
Jun. 30, 2015
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	7. LOAN PAYABLE: As of June 30, 2015, 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 System 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. The Company has incurred interest expense related to the Pennvest Loan of $197,494 for both of the years ended June 30, 2015 and 2014, respectively. As of June 30, 2015, the accrued interest and late charges related to the Pennvest Loan total $577,001. Based on the limited development of the depth and breadth of the Pennsylvania nutrient reduction credit market to date, PA-1 has commenced negotiations with Pennvest related to forbearance and/or re-structuring the obligations under 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. Additionally, the Company has not made any principal payments, which were to begin in fiscal 2013, and, therefore, the Company has classified the Pennvest Loan as a current liability as of June 30, 2015. On September 25, 2014, Pennvest exercised its right to declare the Pennvest Loan in default and has accelerated the Pennvest Loan and demanded that PA-1 pay $8,137,117 (principal, interest plus late charges) on or before October 24, 2014. PA-1 did not make the payment and does not have the resources to make the payment demanded by Pennvest. PA-1 has commenced discussions and negotiations with Pennvest concerning this matter but Pennvest has rejected PA-1’s proposal made during the fall of 2014. Neither party has any formal proposal as of the date of this report. Subsequent discussions/negotiations have not led to any resolution of the outstanding matters as of this date. It is not possible at this date to predict the outcome of such negotiations, but the Company believes that a loan modification agreement may be reached that will allow PA-1 and Pennvest time for the development of a more robust market for nutrient reductions in Pennsylvania, of which there is no assurance. PA-1 and Bion will continue to evaluate various options with regard to Kreider 1 over the next 30-180 days. In connection with the Pennvest Loan financing documents, 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. During August 2012 the Company provided Pennvest (and the PADEP) with data demonstrating that the Kreider 1 System had surpassed the requisite performance criteria and that the Company’s ‘technology guaranty’ was met. As a result, the Pennvest Loan is solely an obligation of PA-1.

Note 7 - Loan Payable

12 Months Ended

Jun. 30, 2015

7. LOAN PAYABLE:

As of June 30, 2015, 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 System 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. The Company has incurred interest expense related to the Pennvest Loan of $197,494 for both of the years ended June 30, 2015 and 2014, respectively. As of June 30, 2015, the accrued interest and late charges related to the Pennvest Loan total $577,001. Based on the limited development of the depth and breadth of the Pennsylvania nutrient reduction credit market to date, PA-1 has commenced negotiations with Pennvest related to forbearance and/or re-structuring the obligations under 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. Additionally, the Company has not made any principal payments, which were to begin in fiscal 2013, and, therefore, the Company has classified the Pennvest Loan as a current liability as of June 30, 2015.

On September 25, 2014, Pennvest exercised its right to declare the Pennvest Loan in default and has accelerated the Pennvest Loan and demanded that PA-1 pay $8,137,117 (principal, interest plus late charges) on or before October 24, 2014. PA-1 did not make the payment and does not have the resources to make the payment demanded by Pennvest. PA-1 has commenced discussions and negotiations with Pennvest concerning this matter but Pennvest has rejected PA-1’s proposal made during the fall of 2014. Neither party has any formal proposal as of the date of this report. Subsequent discussions/negotiations have not led to any resolution of the outstanding matters as of this date. It is not possible at this date to predict the outcome of such negotiations, but the Company believes that a loan modification agreement may be reached that will allow PA-1 and Pennvest time for the development of a more robust market for nutrient reductions in Pennsylvania, of which there is no assurance. PA-1 and Bion will continue to evaluate various options with regard to Kreider 1 over the next 30-180 days.

In connection with the Pennvest Loan financing documents, 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. During August 2012 the Company provided Pennvest (and the PADEP) with data demonstrating that the Kreider 1 System had surpassed the requisite performance criteria and that the Company’s ‘technology guaranty’ was met. As a result, the Pennvest Loan is solely an obligation of PA-1.