Warrants (Tables)
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3 Months Ended |
12 Months Ended |
Mar. 31, 2020 |
Dec. 31, 2019 |
| Warrants [Abstract] |
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| Summary Of Warrants Outstanding |
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Number of Warrants:
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Warrant Issuance
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March 31, 2020
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December 31, 2019
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Exercise Price
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Expiration Date
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Liability-classified Warrants
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November 2015 Investors
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104,168
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104,168
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$
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63.60
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May 2021
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November 2015 Placement Agent
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279
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279
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$
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63.60
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Nov. 2020
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March 2016 Investors
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50,651
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50,651
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$
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50.40
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Sept. 2021
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September 2016 Investors
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67,084
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67,084
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$
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36.00
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Mar. 2022
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June 2017 Investors
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126,264
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126,264
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$
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48.00
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Dec. 2022
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June 2017 Placement Agent
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15,153
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15,153
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$
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49.50
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June 2022
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October 2017 Investors
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136,058
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136,058
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$
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34.20
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Apr. 2023
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October 2017 Placement Agent
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16,327
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16,327
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$
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36.72
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Oct. 2022
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Total liability classified warrants
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515,984
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515,984
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Equity-classified Warrants
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October 2018 Investors
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480,771
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480,771
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$
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20.04
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Apr. 2024
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October 2018 Placement Agent
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28,848
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28,848
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$
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19.50
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Oct. 2023
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January 2019 Investors
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895,886
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895,886
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$
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9.60
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Jan. 2024
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Total equity-classified warrants
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1,405,505
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1,405,505
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Total outstanding warrants
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1,921,489
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1,921,489
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Number of Warrants:
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Warrant Issuance
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December 31, 2019
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December 31, 2018
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Exercise Price
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Expiration Date
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Liability-classified Warrants
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January 2014 Investors
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-
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39,683
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$
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153.60
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Jan. 2019
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November 2015 Investors
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104,168
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104,168
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$
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63.60
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May 2021
|
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November 2015 Placement Agent
|
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279
|
|
279
|
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$
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63.60
|
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Nov. 2020
|
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March 2016 Investors
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50,651
|
|
50,651
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$
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50.40
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Sept. 2021
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September 2016 Investors
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67,084
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|
67,084
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|
$
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36.00
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Mar. 2022
|
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June 2017 Investors
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|
126,264
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126,264
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$
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48.00
|
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Dec. 2022
|
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June 2017 Placement Agent
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15,153
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15,153
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$
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49.50
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June 2022
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October 2017 Investors
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136,058
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136,058
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$
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34.20
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Apr. 2023
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October 2017 Placement Agent
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16,327
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16,327
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$
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36.72
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Oct. 2022
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Total liability classified warrants
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515,984
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555,667
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Equity-classified Warrants
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October 2018 Investors
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480,771
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480,771
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$
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20.04
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Apr. 2024
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October 2018 Placement Agent
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28,848
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28,848
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$
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19.50
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Oct. 2023
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January 2019 Investors
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895,886
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-
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$
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9.60
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Jan. 2024
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Total equity-classified warrants
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1,405,505
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509,619
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Total outstanding warrants
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1,921,489
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1,065,286
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| Summary Of Changes In Warrants Outstanding During The Period |
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Number of Warrants
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Liability-classified
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Equity- classified
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Total
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Weighted average exercise price
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Balance, January 1, 2020
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515,984
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1,405,505
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1,921,489
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$
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22.10
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Issued during the period
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-
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-
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-
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$
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-
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Exercised during the period
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-
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-
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-
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$
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-
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Expired during the period
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|
-
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-
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$
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-
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Balance, March 31, 2020
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515,984
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1,405,505
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1,921,489
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$
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22.10
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Number of Warrants
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Liability-classified
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Equity- classified
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Total
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Weighted average exercise price
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Balance, January 1, 2019
|
555,667
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509,619
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1,065,286
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$
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37.52
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Issued during the period
|
-
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895,886
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|
895,886
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$
|
9.60
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Exercised during the period
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-
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-
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-
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$
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-
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Expired during the period
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(39,683)
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-
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(39,683)
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$
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153.60
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Balance, December 31, 2019
|
515,984
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1,405,505
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1,921,489
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$
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22.10
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| Schedule Of Fair Value Of Warrants Issued |
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Fair Value as of:
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Warrant Issuance:
|
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March 31, 2020
|
December 31, 2019
|
|
November 2015 Investors
|
|
$
|
971
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$
|
55
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|
November 2015 Placement Agent
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|
-
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-
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March 2016 Investor
|
|
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1,240
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|
439
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September 2016 Investors
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14,639
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3,196
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June 2017 Investors
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30,364
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11,736
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June 2017 Placement Agent
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|
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2,574
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|
845
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October 2017 Investors
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46,178
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23,772
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October 2017 Placement Agent
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4,143
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1,674
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Total:
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$
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100,109
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$
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41,717
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Fair Value as of:
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Warrant Issuance:
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December 31, 2019
|
December 31, 2018
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November 2015 Investors
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$
|
55
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$
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234,918
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November 2015 Placement Agent
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|
-
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435
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March 2016 Investor
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|
439
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160,099
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September 2016 Investors
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3,196
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333,834
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June 2017 Investors
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11,736
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623,324
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June 2017 Placement Agent
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|
845
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|
65,149
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October 2017 Investors
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23,772
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801,551
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October 2017 Placement Agent
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1,674
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|
88,276
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Total:
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$
|
41,717
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$
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2,307,586
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| Schedule Of Assumptions Used In Calculating Fair Value Of Warrants |
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March 31, 2020
|
December 31, 2019
|
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Trading market prices
|
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$
|
1.80
|
|
$
|
1.91
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|
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Estimated future volatility
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|
|
100
|
%
|
|
102
|
%
|
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Dividend
|
|
|
-
|
|
|
-
|
|
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Estimated future risk-free rate
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|
|
0.20-0.41
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%
|
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1.57-1.72
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%
|
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Equivalent volatility
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|
|
113-129
|
%
|
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85-94
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%
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Equivalent risk-free rate
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|
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0.13-0.19
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%
|
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1.57-1.59
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%
|
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Fundamental transaction likelihood
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|
50
|
%
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50
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%
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Fundamental transaction timing
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July 2020
|
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April 2020
|
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|
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December 31, 2019
|
December 31, 2018
|
|
Trading market prices
|
|
$
|
1.91
|
|
$
|
11.16
|
|
|
Estimated future volatility
|
|
|
102
|
%
|
|
105
|
%
|
|
Dividend
|
|
|
-
|
|
|
-
|
|
|
Estimated future risk-free rate
|
|
|
1.57-1.72
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%
|
|
2.35-2.53
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%
|
|
Equivalent volatility
|
|
|
85-94
|
%
|
|
99-104
|
%
|
|
Equivalent risk-free rate
|
|
|
1.57-1.59
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%
|
|
2.51-2.55
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%
|
|
Fundamental transaction likelihood
|
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|
50
|
%
|
|
5
|
%
|
|
Fundamental transaction timing
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|
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April 2020
|
|
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End of warrant term
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| Schedule Of Unrealized Gain/(Loss) On Fair Value Of Warrants |
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For the Three Months Ended March 31,
|
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|
|
2020
|
|
2019
|
|
November 2015 Investors
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$
|
(916)
|
$
|
197,084
|
|
November 2015 Placement Agent
|
|
-
|
|
380
|
|
March 2016 Investors
|
|
(801)
|
|
114,799
|
|
September 2016 Investors
|
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(11,443)
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|
217,869
|
|
June 2017 Investors
|
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(18,628)
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|
388,391
|
|
June 2017 Placement Agent
|
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(1,729)
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|
41,911
|
|
October 2017 Investors
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(22,406)
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|
496,501
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October 2017 Placement Agent
|
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(2,469)
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|
56,436
|
|
Total:
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$
|
(58,392)
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$
|
1,513,371
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For the Year Ended December 31,
|
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2019
|
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2018
|
|
Expired Warrants
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$
|
-
|
$
|
64,307
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|
November 2015 Investors
|
|
234,863
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|
1,025,132
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|
November 2015 Placement Agent
|
|
435
|
|
2,501
|
|
March 2016 Investors
|
|
159,660
|
|
537,455
|
|
September 2016 Investors
|
|
330,638
|
|
720,249
|
|
June 2017 Investors
|
|
611,588
|
|
1,358,540
|
|
June 2017 Placement Agent
|
|
64,304
|
|
156,442
|
|
October 2017 Investors
|
|
777,779
|
|
1,504,001
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|
October 2017 Placement Agent
|
|
86,602
|
|
177,422
|
|
Total:
|
$
|
2,265,869
|
$
|
5,546,049
|
|