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Note 8 - Stockholders' Deficit (Details Textual) - USD ($) |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 20, 2017 | Jan. 23, 2017 | Sep. 29, 2016 | Jul. 28, 2016 | Jun. 30, 2016 | Apr. 01, 2016 | Apr. 30, 2016 | Jun. 30, 2017 | Sep. 26, 2016 | Jun. 30, 2017 | Mar. 20, 2017 | Jun. 30, 2016 | Aug. 23, 2016 | Jun. 01, 2016 | May 31, 2016 | Nov. 26, 2014 | Dec. 31, 2012
Stock Issued During Period, Value, Issued for Services |  |  |  |  |  |  |  |  |  | $ 19,000 |  | $ 29,000 |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 297,035 |  | 297,035
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.55 | $ 2.69 |  | $ 4.10
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 |
Share Price |  |  |  |  | $ 0.50 |  |  | $ 0.43 |  | $ 0.43 |  | $ 0.50 |  |  | 0.40 |  |
Stock Issued During Period, Value, New Issues |  |  |  |  |  |  |  |  |  | $ 1,075,000 |  | $ 1,062,000 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value |  |  |  |  |  |  |  | $ 2,000 |  | 2,000 |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options |  |  |  |  |  |  |  | 41,000 |  | $ 41,000 |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition |  |  |  |  |  |  |  |  |  | 1 year 98 days |  |  |  |  |  |  |
Warrant Options, 2012 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right |  |  |  |  |  |  |  |  |  |  |  |  | 0.602 |  |  |  |
Class of Warrants or Right, Exchanged During Period |  |  |  |  |  |  |  |  |  | 271,420 |  |  |  |  |  |  |
Class of Warrant or Right, Exchanged During Period, Exercise Price |  |  |  |  |  |  |  |  |  | $ 1.40 |  |  |  |  |  |  |
Stock Issued During Period, Value, New Issues, Exchange of Warrants |  |  |  |  |  |  |  |  |  | $ 10,000 |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues, Exchange of Warrants |  |  |  |  |  |  |  |  |  | 163,395 |  |  |  |  |  |  |
Catalyst Global LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Issued for Services | $ 3,375 | $ 3,000 | $ 3,000 |  | $ 14,500 |  |  | 10,499 |  |  |  |  |  |  |  |  |
Advisory Fees, Per Month |  |  |  |  |  | $ 2,000 |  | $ 3,500 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Issued for Services, Per Month |  |  |  |  |  |  |  | 7,777 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Issued for Services | 7,500 | 7,500 | 7,500 |  | 31,500 |  |  | 23,331 |  |  | 54,000 |  |  |  |  |  |
Share Price | $ 0.45 | $ 0.40 | $ 0.40 |  | $ 0.50 |  |  | $ 0.45 |  | $ 0.45 | $ 0.45 | $ 0.50 |  |  |  |  |
Private Placement 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Private Placement, Number of Shares Authorized |  |  |  |  |  |  | 7,750,000 |  |  |  |  |  |  |  |  |  |
Share Price |  |  |  |  |  |  | $ 0.40 |  |  |  |  |  |  |  | $ 0.40 |  |
Intent to Raise Private Placement Offering |  |  |  | $ 4,000,000 |  |  | $ 3,100,000 |  |  |  |  |  |  |  |  |  |
Private Placement, Liabilities Settled |  |  |  |  |  |  |  |  |  | $ 400,000 |  | $ 1,375,000 |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  |  |  |  |  |  |  | 3,687,500 |  |  |  |  |  |  |
Private Placement, Consideration Received |  |  |  |  |  |  |  |  |  | $ 1,475,000 |  | 2,425,000 |  |  |  |  |
Proceeds from Issuance of Common Stock |  |  |  |  |  |  |  |  |  | 1,075,000 |  | $ 1,050,000 |  |  |  |  |
Private Placement 2016 [Member] | Esenjay Investments, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued |  |  |  |  |  |  |  |  |  |  |  | 3,375,000 |  |  |  |  |
Debt Conversion, Original Debt, Amount |  |  |  |  |  |  |  |  |  |  |  | $ 1,350,000 |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  |  |  |  |  |  |  |  |  | 625,000 |  |  |  |  |
Proceeds from Issuance of Common Stock |  |  |  |  |  |  |  |  |  |  |  | $ 250,000 |  |  |  |  |
Private Placement 2016 [Member] | Two Unrelated Private Investors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Settlement of Debt |  |  |  |  |  |  |  |  |  |  |  | 63,000 |  |  |  |  |
Stock Issued During Period, Value, Settlement of Debt |  |  |  |  |  |  |  |  |  |  |  | $ 25,000 |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  |  |  |  |  |  | 250,000 |  |  | 2,000,000 |  |  |  |  |
Stock Issued During Period, Value, New Issues |  |  |  |  |  |  |  |  | $ 100,000 |  |  |  |  |  |  |  |
Proceeds from Issuance of Common Stock |  |  |  |  |  |  |  |  |  |  |  | $ 800,000 |  |  |  |  |
Private Placement 2016 [Member] | Esenjay Investments, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Private Placement, Liabilities Settled |  |  |  |  |  |  |  |  |  | $ 400,000 |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |  |  |  |  |
Proceeds from Issuance of Common Stock |  |  |  |  |  |  |  |  |  | $ 200,000 |  |  |  |  |  |  |

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