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Equity Instruments (Tables)
 12 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The assumptions used for the year ended June 30, 2017 are as follows:
 
 
 
Year Ended June 30,
 
 
 
2017
 
2016
 
 
 
 
 
 
 
 
 
Expected volatility
 
 
178% - 185%
 
 
75%
 
Risk free interest rate
 
 
0.97% - 1.88%
 
 
1.16% - 1.90%
 
Expected term (years)
 
 
5.0 -6.5
 
 
3.75 - 6.25
 
Dividend yield
 
 
0%
 
 
0%
 
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
Stock option activity is as follows:
 
 
 
 
 
 
 
Weighted Average
 
 
 
Number of
 
Weighted
Average
 
Remaining
Contractual Life in
 
 
 
Options
 
Exercise Price
 
Years
 
Outstanding June 30, 2015
 
 
-
 
$
-
 
 
-
 
Granted
 
 
16,340
 
$
360.20
 
 
 
 
Exercised
 
 
-
 
$
-
 
 
 
 
Forfeited/Cancelled
 
 
(209)
 
$
362.40
 
 
 
 
Outstanding June 30, 2016
 
 
16,131
 
$
360.20
 
 
9.33
 
Granted
 
 
23,608
 
$
18.20
 
 
 
 
Exercised
 
 
-
 
$
-
 
 
 
 
Forfeited
 
 
(1,408)
 
$
83.20
 
 
 
 
Cancelled
 
 
(68)
 
$
64.60
 
 
 
 
Outstanding June 30, 2017
 
 
38,263
 
$
16.31
 
 
8.40
 
Exercisable at June 30, 2017
 
 
19,341
 
$
16.40
 
 
7.95
 
Available for grant at June 30, 2017
 
 
61,737
 
 
 
 
 
 
 
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
The following table details the options outstanding at June 30, 2017 by range of exercise prices:
 
 
 
 
 
 
 
Weighted Average Remaining Contractual
 
 
 
 
 
Range of Exercise Prices
 
Number of Options Outstanding
 
Weighted Average Exercise Price
 
Life of Options Outstanding
 
Number of Options Exercisable
 
Weighted Average Exercise Price
 
$
14.00
 
 
1,500
 
$
14.00
 
 
9.85
 
 
-
 
$
14.00
 
$
16.40
 
 
36,763
 
$
16.40
 
 
8.34
 
 
19,341
 
$
16.40
 
 
 
 
 
38,263
 
$
16.31
 
 
8.40
 
 
19,341
 
$
16.40
 
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]
The following table summarizes stock-based compensation expense for the years ended June 30, 2017 and 2016:
 
 
 
Year Ended June 30,
 
 
 
2017
 
2016
 
Research and development expenses
 
 
 
 
 
 
 
Stock-based compensation
 
$
-
 
$
89,000
 
Selling, general and administrative expenses
 
 
 
 
 
 
 
Stock-based compensation
 
 
2,502,000
 
 
814,000
 
 
 
$
2,502,000
 
$
903,000
 
 
 
 
 
 
 
 
 
Unrecognized expense at June 30, 2017
 
$
775,000
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average remaining years to vest
 
 
1.81
 
 
 
 
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
A summary of all warrants is as follows:
 
 
 
 
 
Weighted
 
Weighted Average
 
 
 
Number of
 
Average
 
Remaining Contractual
 
 
 
Warrants
 
Exercise Price
 
Life in Years
 
Outstanding June 30, 2015
 
 
444
 
$
1,087.20
 
 
2.92
 
Warrants issued to placement agents for convertible promissory notes
 
 
1,115
 
$
156.00
 
 
 
 
Warrants issued to investors in connection with the registered offering
 
 
86,667
 
$
120.00
 
 
 
 
Warrants issued to placement agents for convertible promissory notes
 
 
1,129
 
$
96.00
 
 
 
 
Warrants issued to placement agents for the registered offering
 
 
5,474
 
$
120.00
 
 
 
 
Warrants issued to convertible note holders who converted May 5, 2016
 
 
15,279
 
$
120.00
 
 
 
 
Outstanding June 30, 2016
 
 
110,108
 
$
124.02
 
 
4.71
 
 
 
 
 
 
 
 
 
 
 
 
Issuance of settlement warrants to initial investors
 
 
4,402
 
$
80.00
 
 
 
 
Warrants issued to investors in connection with the registered offering
 
 
301,014
 
$
37.20
 
 
 
 
Warrants issued to placement agents for the registered offering
 
 
20,077
 
$
15.00
 
 
 
 
Warrants exercised
 
 
(149,552)
 
$
15.00
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding June 30, 2017
 
 
286,049
 
$
50.29
 
 
4.23
 
Schedule of Share-based Payment Award, Warrants, Valuation Assumptions [Table Text Block]
Significant assumptions in valuing the warrants issued and modified during the year ended June 30, 2017 were as follows:
 
 
 
Year Ended June 30,
 
 
 
2017
 
2016
 
Expected volatility
 
 
156.64% - 169.22%
 
 
75%
 
Risk free interest rate
 
 
1.63% - 1.87%
 
 
1.07 - 1.76%
 
Contractual term (years)
 
 
3.46 - 4.67
 
 
4.2 - 5.0
 
Dividend yield
 
 
0%
 
 
0%