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Note 10 - Commitments and Contingencies (Details Textual)						1 Months Ended		12 Months Ended		24 Months Ended
	Jan. 15, 2017 shares	Oct. 10, 2016 USD ($) $ / shares shares	Jan. 05, 2016 shares	Feb. 10, 2015 USD ($) $ / shares shares	Sep. 25, 2014 USD ($)	Oct. 31, 2016 USD ($) $ / shares	Oct. 31, 2015 USD ($) shares	Jun. 30, 2017 USD ($) $ / shares shares	Jun. 30, 2016 $ / shares shares	Dec. 31, 2013 shares	Apr. 27, 2017 USD ($) $ / shares	Dec. 31, 2015 USD ($)	Jun. 30, 2015 shares	Dec. 31, 2014 USD ($) $ / shares	May 15, 2013
Common Stock, Capital Shares Reserved for Future Issuance	100,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price \| $ / shares								$ 0.97	$ 0.92
Extension of Exercise Period Annual Payment per Option or Warrant \| $ / shares								$ 0.05
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number								4,545,037	4,225,537				4,413,870
Class of Warrant or Right, Outstanding								8,600,000
Stock Issued During Period, Shares, Issued for Services								205,499	242,034
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross								319,500	100,000
Pennvest Loan [Member]
Loss Contingency, Damages Sought, Value \| $					$ 8,137,117
Stock Bonus [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price \| $ / shares								$ 1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period								117,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross								109,500
Exercise Bonus [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number								3,170,000
Class of Warrant or Right, Outstanding								7,748,524
Mr. Bassani [Member]
Convertible Notes Payable \| $								$ 1,464,545
Mr. Bassani [Member] \| Convertible Debt [Member]
Debt Instrument, Interest Rate Reduction, Percentage								50.00%
Debt Instrument, Interest Rate, Stated Percentage								4.00%						8.00%
Debt Instrument, Convertible Conversion Price, Incease, Percentage								11.00%
Debt Instrument, Convertible, Conversion Price \| $ / shares								$ 0.50						$ 0.45
Number of Warrants Per Unit Reduction Percentage								75.00%
President [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares				$ 1.50					$ 0.75
Number of Warrants Per Unit								1	1
Monthly Officers' Cash Compensation \| $				$ 18,000
President [Member] \| FY2016 Extension Agreement [Member]
Monthly Officers' Cash Compensation \| $							$ 19,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross							100,000
President [Member] \| Stock Bonus [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period				150,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				150,000
President [Member] \| Extension Bonus [Member] \| FY2016 Extension Agreement [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price \| $ / shares						$ 0.90
Monthly Officers' Cash Compensation \| $						$ 18,000
Deferred Compensation, Maximum Convertible Amount \| $		$ 125,000				$ 125,000					$ 300,000
Deferred Compensation, Stock Conversion, Price Per Share \| $ / shares		$ 0.75				$ 0.75					$ 0.75
Stock Issued During Period, Shares, Issued for Services	25,000		75,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		75,000
President [Member] \| New Smith Note [Member]
Convertible Notes Payable \| $				$ 760,520
President [Member] \| New Smith Note [Member] \| Convertible Debt [Member]
Debt Instrument, Interest Rate Reduction, Percentage				50.00%
Debt Instrument, Interest Rate, Stated Percentage				4.00%										8.00%
Debt Instrument, Convertible Conversion Price, Incease, Percentage				11.00%
Debt Instrument, Convertible, Conversion Price \| $ / shares				$ 0.50										$ 0.45
Accrued Interest on Deferred Compensation and Other Expenses				75.00%
Number of Warrants Per Unit				0.25										1
Chief Executive Officer [Member]
Due to Related Parties, Current \| $														$ 279,000
Unreimbursed Expenses \| $														$ 116,277
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares								$ 1.50
Monthly Officers' Cash Compensation \| $								$ 31,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross								450,000
Chief Executive Officer [Member] \| Extension Agreement One [Member]
Common Stock, Capital Shares Reserved for Future Issuance										500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross										600,000
Chief Executive Officer [Member] \| Stock Bonus [Member]
Execution Bonus as Percentage of Exercised Options and Warrants															50.00%
Chief Executive Officer [Member] \| Stock Bonus [Member] \| Extension Agreement Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period								250,000
Chief Executive Officer [Member] \| Extension Bonus [Member] \| FY2016 Extension Agreement [Member]
Deferred Compensation, Maximum Convertible Amount \| $											$ 300,000
Deferred Compensation, Stock Conversion, Price Per Share \| $ / shares											$ 0.75
Chief Executive Officer [Member] \| Cash Note [Member]
Debt Instrument, Face Amount \| $												$ 395,277
Class of Warrant or Right, Number of Securities Called by Warrants or Rights								592,916
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares								$ 1
Chief Executive Officer [Member] \| Mr. Bassani [Member] \| Convertible Debt [Member]
Number of Warrants Per Unit								0.25						1
CEO and President [Member] \| Exercise Bonus [Member]
ContingentStockBonusPercentageThresholdForIssuance								50.00%
ExtensionOfExercisePeriod								5 years
Extension of Exercise Period Annual Payment per Option or Warrant \| $ / shares								$ 0.01