Note 6 - Derivative Obligations (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands |
|
|
12 Months Ended |
|
Feb. 29, 2016 |
Feb. 16, 2016 |
Jun. 30, 2016 |
Jun. 30, 2015 |
Aug. 31, 2015 |
| Series A Warrant [Member] |
|
|
|
|
|
| Class of Warrant or Right, Outstanding |
|
|
404,412
|
|
404,412
|
| Fair Value Assumptions, Expected Volatility Rate |
91.00%
|
|
|
|
|
| Fair Value Inputs, Discount Rate |
1.20%
|
|
|
|
|
| Fair Value Assumptions, Expected Term |
5 years
|
|
|
|
|
| Fair Value Assumptions, Expected Dividend Rate |
0.00%
|
|
|
|
|
| Class of Warrant or Right, Exercise Price of Warrants or Rights |
$ 8
|
|
|
|
$ 13.60
|
| Series B Warrant [Member] |
|
|
|
|
|
| Class of Warrant or Right, Outstanding |
|
|
222,427
|
|
222,427
|
| Warrants Exercised |
|
26,528
|
25,185
|
|
|
| Shares Issued for Cashless Exercise of Warrants |
|
125,000
|
106,711
|
|
|
| Warrants Not Settleable in Cash, Fair Value Disclosure |
|
$ 25
|
$ 33
|
|
|
| Fair Value Assumptions, Expected Volatility Rate |
|
|
88.00%
|
|
|
| Fair Value Inputs, Discount Rate |
|
|
0.57%
|
|
|
| Fair Value Assumptions, Expected Term |
|
|
1 year 73 days
|
|
|
| Fair Value Assumptions, Expected Dividend Rate |
|
|
0.00%
|
|
|
| Gain (Loss) on Cashless Exercise of Warrants |
|
|
$ (1,039)
|
|
|
| Class of Warrant or Right, Exercise Price of Warrants or Rights |
|
|
|
|
$ 13.60
|
| Derivative Liability |
|
|
4,282
|
|
|
| Derivative, Gain (Loss) on Derivative, Net |
|
|
$ 3,395
|
|
|
| Fair Value Assumptions, Expected Volatility Rate |
|
|
80.00%
|
75.00%
|
|
| Fair Value Assumptions, Expected Term |
|
|
5 years
|
5 years
|
|
| Fair Value Assumptions, Expected Dividend Rate |
|
|
0.00%
|
0.00%
|
|
| Gain (Loss) on Cashless Exercise of Warrants |
|
|
$ (1,039)
|
|
|
| Class of Warrant or Right, Exercise Price of Warrants or Rights |
$ 8
|
|
|
|
|