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Equity Instruments (Tables) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Jun. 30, 2016
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 six months ended December 31, 2016 are as follows:
Expected volatility |  | 182% - 185% |
Risk free interest rate |  | 0.97 % - 1.14% |
Expected term (years) |  | 5.0 - 6.5 |
Dividend yield |  | 0% |
| The assumptions are as follows:
|  | Year Ended June 30, |
|  | 2016 |  |  | 2015 |
Expected volatility |  |  | 75 | % |  |  | - |
Risk free interest rate |  |  | 1.16% - 1.90 | % |  |  | - |
Expected term (years) |  |  | 3.75 - 6.25 |  |  |  | - |
Dividend yield |  |  | 0 | % |  |  | - |
Forfeiture rate |  |  | 0 | % |  |  | - |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] | Stock option activity is as follows:
|  | Number of Options |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life in Years |
Outstanding June 30, 2016 |  |  | 322,302 |  | $ | 18.01 |  |  | 9.33 |
Granted |  |  | 441,999 |  | $ | 3.23 |  |  |  |
Exercised |  |  | - |  | $ | - |  |  |  |
Forfeited/Cancelled |  |  | (17,646) |  | $ | 4.99 |  |  |  |
Outstanding December 31, 2016 |  |  | 746,655 |  | $ | 3.52 |  |  | 9.21 |
Exercisable at December 31, 2016 |  |  | 323,755 |  | $ | 3.40 |  |  | 9.10 |
Available for grant at December 31, 2016 |  |  | 1,253,345 |  |  |  |  |  |  |
| Stock option activity is as follows:
|  | Number of Options |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Life in Years |
Outstanding June 30, 2015 |  |  | - |  | $ | - |  |  |  |  |
Granted |  |  | 326,469 |  | $ | 18.01 |  |  |  |  |
Exercised |  |  | - |  | $ | - |  |  |  |  |
Forfeited/Cancelled |  |  | (4,167) |  | $ | 18.12 |  |  |  |  |
Outstanding June 30, 2016 |  |  | 322,302 |  | $ | 18.01 |  |  |  | 9.33 |
Exercisable at June 30, 2016 |  |  | 139,798 |  | $ | 16.76 |  |  |  | 9.42 |
Available for grant at June 30, 2016 |  |  | 511,032 |  |  |  |  |  |  |  |
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, 2016 by range of exercise prices:
Range of Exercise Prices |  | Number of Options Outstanding |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life of Options Outstanding |  | Number of Options Exercisable |  | Weighted Average Exercise Price |
$ | 6.72 |  |  | 16,668 |  | $ | 6.72 |  |  | 9.79 |  |  | 16,668 |  | $ | 6.72 |
$ | 18.12 |  |  | 301,467 |  | $ | 18.12 |  |  | 9.37 |  |  | 123,130 |  | $ | 18.12 |
$ | 55.56 |  |  | 4,167 |  | $ | 55.56 |  |  | 4.11 |  |  | - |  | $ | - |
|  |  |  | 322,302 |  | $ | 18.01 |  |  | 9.33 |  |  | 139,798 |  | $ | 16.76 |
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 three and six months ended December 31, 2016 and three and six months ended December 31, 2015:
|  | Three Months Ended December 31, |  | Six Months Ended December 31, |
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |
Research and development expenses |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options |  | $ | - |  | $ | 20,000 |  | $ | - |  | $ | 25,000 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options |  |  | 381,000 |  | $ | 163,000 |  |  | 1,425,000 |  |  | 226,000 |
|  | $ | 381,000 |  | $ | 183,000 |  | $ | 1,425,000 |  | $ | 251,000 |
Unrecognized expense at December 31, 2016 |  | $ | 1,435,000 |  |  |  |  |  |  |  |  |  |
Weighted average remaining years to vest |  |  | 2.26 |  |  |  |  |  |  |  |  |  |
| The following table summarizes stock-based compensation expense for the years ended June 30 2016 and 2015:
|  | Year Ended June 30, |
|  | 2016 |  | 2015 |
Research and development expenses |  |  |  |  |  |  |
Stock options |  | $ | 89,000 |  | $ | 519,000 |
Selling, general and administrative expenses |  |  |  |  |  |  |
Stock options |  |  | 814,000 |  |  | 499,000 |
|  | $ | 903,000 |  | $ | 1,018,000 |
Unrecognized expense at June 30, 2016 |  | $ | 1,267,000 |  |  |  |
Weighted average remaining years to vest |  |  | 2.66 |  |  |  |
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] | A summary of all warrants is as follows:
|  | Number of Warrants |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life in Years |
Outstanding June 30, 2016 |  |  | 2,201,627 |  | $ | 6.19 |  |  | 4.71 |
Issuance of settlement warrants to initial investors |  |  | 88,032 |  | $ | 4.00 |  |  |  |
Warrants issued to investors in connection with the registered offering |  |  | 6,020,245 |  | $ | 1.86 |  |  |  |
Warrants issued to placement agents for the registered offering |  |  | 401,450 |  | $ | 1.86 |  |  |  |
Outstanding December 31, 2016 |  |  | 8,711,354 |  | $ | 2.98 |  |  | 4.51 |
| A summary of all warrants is as follows:
|  | Number of Warrants |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life in Years |
Outstanding June 30, 2014 |  |  | 8,553 |  | $ | 54.36 |  |  | 3.92 |
Granted in fiscal 2015 |  |  | - |  |  | - |  |  |  |
Expired in fiscal 2015 |  |  | - |  |  | - |  |  |  |
Outstanding June 30, 2015 |  |  | 8,553 |  | $ | 54.36 |  |  | 2.92 |
Warrants issued to placement agents for convertible promissory notes |  |  | 22,254 |  | $ | 7.80 |  |  |  |
Warrants issued to investors in connection with the registered offering |  |  | 1,733,322 |  | $ | 6.00 |  |  |  |
Warrants issued to placement agents for convertible promissory notes |  |  | 22,564 |  | $ | 4.80 |  |  |  |
Warrants issued to placement agents for the registered offering |  |  | 109,375 |  | $ | 6.00 |  |  |  |
Warrants issued to convertible note holders who converted May 5, 2016 |  |  | 305,559 |  | $ | 6.00 |  |  |  |
Outstanding June 30, 2016 |  |  | 2,201,627 |  | $ | 6.19 |  |  | 4.71 |
Schedule of Share-based Payment Award, Warrants, Valuation Assumptions [Table Text Block] | Significant assumptions in valuing the warrants issued during the December 31, 2016 quarter were as follows:
Expected volatility |  | 186.7% - 229.8% |
Risk free interest rate |  | 1.02% - 1.33% |
Contractual term (years) |  | 4.68 - 5.0 |
Dividend yield |  | 0% |
| The assumptions are as follows:
|  | Year Ended June 30, |
|  |  | 2016 |  | 2015 |
Expected volatility |  |  | 75 | % |  | - |
Risk free interest rate |  |  | 1.07 - 1.76 | % |  | - |
Contractual term (years) |  |  | 4.2 - 5.0 |  |  | - |
Dividend yield |  |  | 0 | % |  | - |

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68057994&loc=d3e25284-112666 + Details
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