Note 7 - Equity (Details Textual) - USD ($) | Mar. 16, 2017 | Mar. 09, 2017 | Mar. 01, 2017 | Feb. 28, 2017 | Feb. 27, 2017 | Feb. 19, 2016 | Jul. 16, 2015 | Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016 | Nov. 30, 2015 |
Stock Issued During Period, Shares, Issued for Services | | | | | | | | 50,000 | 20,000 | | |
Stock Issued During Period, Value, Issued for Services | | | | | | | | $ 150,000 | $ 25,000 | | |
Prepaid Expense, Current | | | | | | | | 222,299 | 24,658 | $ 282,409 | |
Payments of Stock Issuance Costs | | | | | | | | $ 53,400 | 144,000 | | |
Class of Warrant or Right, Exercised During Period | | | | | | | | 790,000 | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights | | | | | | | | $ 1.77 | | $ 1.44 | |
Incentive Fees | | | | | | | | | $ 926,885 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | | | | | | | 60,000 | | | |
Equity Incentive Plan 2015 [Member] | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | | | | | | | | | | | 4,000,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | | | | | | | | 60,000 | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | | | | | | | | $ 68,328 | | | |
Equity Incentive Plan 2015 [Member] | Employee Stock Option [Member] | | | | | | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Payments | | | | | | | | $ 0 | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate | | | | | | | | 148.40% | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum | | | | | | | | 1.89% | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum | | | | | | | | 1.93% | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term | | | | | | | | 5 years | | | |
Employee [Member] | | | | | | | | | | | |
Class of Warrant or Right, Exercised During Period | | | | | 40,000 | | | | | | |
Proceeds from Warrant Exercises | | | | | $ 60,000 | | | | | | |
Class of Warrant or Right, Issued During Period, Term | | | | 5 years | 5 years | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | | | | 40,000 | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights | | | | $ 4.50 | $ 1.50 | | | | | $ 2 | |
Warrants and Rights Outstanding | | | | $ 46,000 | | | | | | | |
Fair Value Assumptions, Expected Dividend Rate | | | | 0.00% | | | | | | | |
Fair Value Assumptions, Expected Volatility Rate | | | | 148.39% | | | | | | | |
Fair Value Assumptions, Risk Free Interest Rate | | | | 2.05% | | | | | | | |
Fair Value Assumptions, Expected Term | | | | 5 years | | | | | | | |
Fully Vested, Non-forfeitable Warrants [Member] | | | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | | | | | | | | 235,000 | 110,000 | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights | | | | | | | | $ 3 | $ 2 | | |
Warrants and Rights Outstanding | | | | | | | | $ 283,039 | $ 130,833 | | |
Fair Value Assumptions, Expected Dividend Rate | | | | | | | | 0.00% | 0.00% | | |
Fair Value Assumptions, Expected Volatility Rate | | | | | | | | 148.39% | 184.20% | | |
Fair Value Assumptions, Expected Term | | | | | | | | 5 years | 5 years | | |
Fully Vested, Non-forfeitable Warrants [Member] | Minimum [Member] | | | | | | | | | | | |
Fair Value Assumptions, Risk Free Interest Rate | | | | | | | | 1.90% | 1.31% | | |
Fully Vested, Non-forfeitable Warrants [Member] | Maximum [Member] | | | | | | | | | | | |
Fair Value Assumptions, Risk Free Interest Rate | | | | | | | | 2.05% | 1.38% | | |
July 16, 2015 Warrants [Member] | | | | | | | | | | | |
Proceeds from Warrant Exercises | | | $ 525,000 | | | | | | | | |
Class of Warrant or Right, Issued During Period, Term | | | | | | | 5 years | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | | | | | | | 350,000 | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights | | | $ 1.50 | | | | $ 3 | | | | |
March 1, 2017 Warrants [Member] | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues | | | 350,000 | | | | | | | | |
New Smith Warrant [Member] | | | | | | | | | | | |
Class of Warrant or Right, Issued During Period, Term | | | 5 years | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | | | 350,000 | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights | | | $ 4.50 | | | | | | | | |
Warrants and Rights Outstanding | | | $ 402,000 | | | | | | | | |
Fair Value Assumptions, Expected Dividend Rate | | | 0.00% | | | | | | | | |
Fair Value Assumptions, Expected Volatility Rate | | | 148.39% | | | | | | | | |
Fair Value Assumptions, Risk Free Interest Rate | | | 1.89% | | | | | | | | |
Fair Value Assumptions, Expected Term | | | 5 years | | | | | | | | |
February 19, 2016 Warrants [Member] | Diamond B Capital, LLC [Member] | | | | | | | | | | | |
Class of Warrant or Right, Exercised During Period | 400,000 | | | | | | | | | | |
Proceeds from Warrant Exercises | $ 600,000 | | | | | | | | | | |
Class of Warrant or Right, Issued During Period, Term | | | | | | 5 years | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | | 400,000 | | | | 400,000 | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 1.50 | $ 4.50 | | | | $ 2 | | | | | |
February 19, 2016 Warrants [Member] | Diamond B Capital, LLC [Member] | Director [Member] | | | | | | | | | | | |
Related Party Transaction, Ownership Percentage | | | | | | 12.00% | | | | | |
New Diamond B Warrant [Member] | Diamond B Capital, LLC [Member] | | | | | | | | | | | |
Class of Warrant or Right, Issued During Period, Term | | 5 years | | | | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | | 400,000 | | | | | | | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights | | $ 4.50 | | | | | | | | | |
Warrants and Rights Outstanding | | $ 463,000 | | | | | | | | | |
Fair Value Assumptions, Expected Dividend Rate | | 0.00% | | | | | | | | | |
Fair Value Assumptions, Expected Volatility Rate | | 148.39% | | | | | | | | | |
Fair Value Assumptions, Risk Free Interest Rate | | 1.89% | | | | | | | | | |
Fair Value Assumptions, Expected Term | | 5 years | | | | | | | | | |
October 2015 Private Offering [Member] | | | | | | | | | | | |
Stock Issued During Period, Shares, New Issues | | | | | | | | 229,500 | | | |
Shares Issued, Price Per Share | | | | | | | | $ 3 | | | |
Proceeds from Issuance of Private Placement | | | | | | | | $ 688,500 | | | |
Payments of Stock Issuance Costs | | | | | | | | 53,400 | | | |
October 2015 Private Offering [Member] | Fully Vested, Non-forfeitable Warrants [Member] | | | | | | | | | | | |
Adjustments to Additional Paid in Capital, Warrant Issued | | | | | | | | $ 23,734 | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | | | | | | | | 20,008 | | | |
Class of Warrant or Right, Exercise Price of Warrants or Rights | | | | | | | | $ 3 | | | |