Note 6 - Capital Transactions (Details) - USD ($) | 3 Months Ended | 9 Months Ended | |
Dec. 31, 2016 | Jun. 30, 2016 | Dec. 31, 2016 | Jun. 08, 2015 |
Debt Conversion, Original Debt, Amount | | | $ 300,000 | |
Stock Issued During Period, Value, Issued for Services | | | 300,000 | |
Stock Issued During Period, Value, New Issues | | | 5,100,000 | |
2014 Equity Incentive Plan | | | | |
Stock Issued During Period, Value, Settlement of Payroll Liabilities | | | $ 100,000 | |
Options, Issued | | | 1,500,000 | |
2014 Equity Incentive Plan | MinimumMember | | | | |
Exercise Price | | | $ 0.30 | |
2014 Equity Incentive Plan | Maximum | | | | |
Exercise Price | | | $ 0.40 | |
2014 Equity Incentive Plan | Employee Stock Option | | | | |
Vesting Period | | | 10 years | |
Series 2 | | | | |
Stock Issued During Period, Value, Settlement of Payroll Liabilities | | | $ 400,000 | |
Units, Description | | | Each unit consisted of one share of common stock and one common stock purchase warrant, expiring in five years, with an exercise price of $0.60. | |
Warrants issued | 1,500,000 | | 1,500,000 | |
Exercise price | $ 0.60 | | $ 0.60 | |
Series 1 | | | | |
Stock Issued During Period, Value, Settlement of Payroll Liabilities | | | $ 900,000 | |
Units, Description | | | Each unit consisted of one share of common stock and one common stock purchase warrant, expiring in three years, with an exercise price of $0.50. | |
Warrants issued | 1,912,500 | | 1,912,500 | |
Exercise price | $ 0.50 | | $ 0.50 | |
Pacific Leaf Ventures LP | | | | |
Allocated Share-based Compensation Expense | | | $ 500,000 | |
Debt Instrument, Convertible, Conversion Price | $ 0.25 | $ 0.25 | $ 0.25 | $ 0.50 |
Debt Conversion, Converted Instrument, Amount | | | $ 2,276,750 | |
Warrants issued | 1,150,000 | | 1,150,000 | |
Exercise price | $ 0.36 | | $ 0.36 | |
Group 1 | | | | |
Debt Conversion, Original Debt, Amount | | | $ 200,000 | |
Debt Instrument, Convertible, Conversion Price | 0.38 | | $ 0.38 | |
Employees | | | | |
Debt Instrument, Convertible, Conversion Price | 0.19 | | $ 0.19 | |
Stock Issued During Period, Value, Settlement of Payroll Liabilities | | | $ 100,000 | |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures | | | 40,000 | |
Group 2 | | | | |
Debt Conversion, Original Debt, Amount | | | $ 300,000 | |
Debt Instrument, Convertible, Conversion Price | 0.33 | | $ 0.33 | |
Group 3 | | | | |
Debt Conversion, Original Debt, Amount | | | $ 0.05 | |
Debt Instrument, Convertible, Conversion Price | $ 0.36 | | $ 0.36 | |
Chief Financial Officer | | | | |
Litigation Settlement, Expense | | $ 0.04 | | |
Director | 2014 Equity Incentive Plan | | | | |
Stock Issued During Period, Value, Settlement of Payroll Liabilities | | | $ 100,000 | |
Options, Issued | | | 900,000 | |
Exercise Price | | | $ 0.16 | |
Director | 2014 Equity Incentive Plan | Employee Stock Option | | | | |
Vesting Period | | | 7 years | |
Chief Sciences Officer | | | | |
Stock Issued During Period, Value, Settlement of Payroll Liabilities | | | $ 100,000 | |
Stock option surrendered | | | 450,000 | |
Warrants issued | 1,200,000 | | 1,200,000 | |
Exercise price | $ 0.30 | | $ 0.30 | |
Chief Sciences Officer | 2014 Equity Incentive Plan | | | | |
Options, Issued | | | 1,400,000 | |
Exercise Price | | | $ 0.30 | |
Chief Executive Officer | 2014 Equity Incentive Plan | | | | |
Stock Issued During Period, Value, Settlement of Payroll Liabilities | | | $ 200,000 | |
Group 4 | | | | |
Debt Conversion, Original Debt, Amount | | | $ 300,000 | |
Debt Instrument, Convertible, Conversion Price | $ 0.20 | | $ 0.20 | |
Stock Issued During Period, Value, Settlement of Payroll Liabilities | | | $ 100,000 | |
Warrants issued | 1,500,000 | | 1,500,000 | |
Exercise price | $ 0.50 | | $ 0.50 | |
Common Stock | | | | |
Debt Conversion, Converted Instrument, Shares Issued | | | 1,991,943 | |
Allocated Share-based Compensation Expense | | | $ 600,000 | |
Stock Issued During Period, Shares, Settlement of Payroll Liabilities | | | 323,692 | |
Stock Issued During Period, Shares, Issued for Services | | | 763,612 | |
Common Stock | Series 2 | | | | |
Stock Issued During Period, Shares, New Issues | | | 15,000,000 | |
Share Price | 0.20 | | $ 0.20 | |
Common Stock | Series 1 | | | | |
Stock Issued During Period, Shares, New Issues | | | 14,847,500 | |
Share Price | 0.20 | | $ 0.20 | |
Common Stock | Series 3 | | | | |
Stock Issued During Period, Shares, New Issues | | | 25,000 | |
Share Price | $ 0.51 | | $ 0.51 | |
Common Stock | Counterclaim | | | | |
Stock Issued During Period, Shares, Settlement | | | 1,400,000 | |
Stock Issued During Period, Value, Settlement | | | $ 400,000 | |
Common Stock | Pacific Leaf Ventures LP | | | | |
Debt Conversion, Converted Instrument, Shares Issued | 7,107,000 | 2,000,000 | 9,107,000 | |
Debt Conversion, Converted Instrument, Amount | $ 1,776,750 | | | |
Common Stock | Pacific Leaf Ventures LP | Series 2 | | | | |
Debt Conversion, Converted Instrument, Shares Issued | | | 1,000,000 | |
Stock Issued During Period, Value, Conversion of Convertible Securities, Net of Adjustments | | | $ 400,000 | |
Common Stock | Group 1 | | | | |
Stock Issued During Period, Shares, Conversion of Convertible Securities | | | 512,275 | |
Common Stock | Employees | | | | |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures | | | 116,667 | |
Common Stock | Group 2 | | | | |
Stock Issued During Period, Shares, Conversion of Convertible Securities | | | 1,017,087 | |
Common Stock | Group 3 | | | | |
Stock Issued During Period, Shares, Conversion of Convertible Securities | | | 138,889 | |
Common Stock | Chief Financial Officer | | | | |
Stock Issued During Period, Shares, Settlement | | 200,000 | 200,000 | |
Stock Issued During Period, Value, Settlement | | | $ 40,000 | |
Common Stock | Group 4 | | | | |
Stock Issued During Period, Shares, Conversion of Convertible Securities | | | 1,500,000 | |