Note 14 - Warrant Liabilities- Fair Value of Warrants (Details)
$ in Thousands |
Jun. 30, 2023
USD ($)
yr
|
Mar. 31, 2023
USD ($)
yr
|
Dec. 31, 2022
USD ($)
yr
|
Jun. 30, 2022
USD ($)
yr
|
Mar. 31, 2022
USD ($)
yr
|
Dec. 31, 2021
USD ($)
yr
|
| Warrant liabilities as of the closing date |
$ 13
|
|
$ 84
|
|
|
|
$ 257
|
|
$ 1,244
|
|
|
|
| Investor Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Warrant liabilities as of the closing date |
12
|
|
49
|
|
$ 86
|
|
167
|
|
626
|
|
$ 964
|
|
| Investor Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Warrant liabilities as of the closing date |
0
|
|
25
|
|
76
|
|
57
|
|
449
|
|
795
|
|
| Placement Agent Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Warrant liabilities as of the closing date |
1
|
|
5
|
|
9
|
|
22
|
|
84
|
|
132
|
|
| Placement Agent Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Warrant liabilities as of the closing date |
$ 0
|
|
$ 5
|
|
$ 14
|
|
$ 11
|
|
$ 85
|
|
$ 148
|
|
| Measurement Input, Share Price [Member] | Investor Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
1.27
|
|
1.70
|
|
0.46
|
|
0.34
|
[1] |
0.73
|
[1] |
1.00
|
[1] |
| Measurement Input, Share Price [Member] | Investor Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
1.27
|
|
1.70
|
|
0.46
|
|
0.34
|
[1] |
0.73
|
[1] |
1.00
|
[1] |
| Measurement Input, Share Price [Member] | Placement Agent Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
1.27
|
|
1.70
|
|
0.46
|
|
0.34
|
[1] |
0.73
|
[1] |
1.00
|
[1] |
| Measurement Input, Share Price [Member] | Placement Agent Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
1.27
|
|
1.70
|
|
0.46
|
|
0.34
|
[1] |
0.73
|
[1] |
1.00
|
[1] |
| Measurement Input, Expected Term [Member] | Investor Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants | yr |
1.13
|
|
1.38
|
|
1.63
|
|
2.13
|
|
2.38
|
|
2.63
|
|
| Measurement Input, Expected Term [Member] | Investor Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants | yr |
0.45
|
|
0.70
|
|
0.95
|
|
1.45
|
|
1.70
|
|
1.95
|
|
| Measurement Input, Expected Term [Member] | Placement Agent Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants | yr |
1.13
|
|
1.38
|
|
1.63
|
|
2.13
|
|
2.38
|
|
2.63
|
|
| Measurement Input, Expected Term [Member] | Placement Agent Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants | yr |
0.45
|
|
0.70
|
|
0.95
|
|
1.45
|
|
1.70
|
|
1.95
|
|
| Measurement Input, Risk Free Interest Rate [Member] | Investor Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0.0534
|
|
0.0444
|
|
0.04625
|
|
0.0297
|
|
0.0235
|
|
0.0087
|
|
| Measurement Input, Risk Free Interest Rate [Member] | Investor Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0.0546
|
|
0.0480
|
|
0.04716
|
|
0.0279
|
|
0.0223
|
|
0.0072
|
|
| Measurement Input, Risk Free Interest Rate [Member] | Placement Agent Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0.0534
|
|
0.0444
|
|
0.04625
|
|
0.0297
|
|
0.0235
|
|
0.0087
|
|
| Measurement Input, Risk Free Interest Rate [Member] | Placement Agent Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0.0546
|
|
0.0480
|
|
0.04716
|
|
0.0279
|
|
0.0223
|
|
0.0072
|
|
| Measurement Input, Expected Dividend Rate [Member] | Investor Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
| Measurement Input, Expected Dividend Rate [Member] | Investor Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
| Measurement Input, Expected Dividend Rate [Member] | Placement Agent Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
| Measurement Input, Expected Dividend Rate [Member] | Placement Agent Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
| Measurement Input, Price Volatility [Member] | Investor Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
1.12
|
|
1.13
|
|
0.9974
|
|
1.24
|
|
1.21
|
|
1.15
|
|
| Measurement Input, Price Volatility [Member] | Investor Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0.94
|
|
1.25
|
|
1.1561
|
|
1.07
|
|
1.27
|
|
1.28
|
|
| Measurement Input, Price Volatility [Member] | Placement Agent Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
1.12
|
|
1.13
|
|
0.9974
|
|
1.24
|
|
1.21
|
|
1.15
|
|
| Measurement Input, Price Volatility [Member] | Placement Agent Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0.94
|
|
1.25
|
|
1.1561
|
|
1.07
|
|
1.27
|
|
1.28
|
|
| Measurement Input, Exercise Price [Member] | Investor Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
17.95
|
|
17.95
|
[1] |
3.59
|
|
3.59
|
|
3.59
|
|
3.59
|
|
| Measurement Input, Exercise Price [Member] | Investor Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
10.15
|
|
10.15
|
[1] |
2.03
|
|
2.03
|
|
2.03
|
|
2.03
|
|
| Measurement Input, Exercise Price [Member] | Placement Agent Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
22.4375
|
[1] |
22.4375
|
[1] |
4.4875
|
[1] |
4.4875
|
|
4.4875
|
|
4.4875
|
|
| Measurement Input, Exercise Price [Member] | Placement Agent Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
10.15
|
[1] |
10.15
|
[1] |
2.03
|
[1] |
2.03
|
|
2.03
|
|
2.03
|
|
| Measurement Input, Quoted Price [Member] | Investor Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0.0232
|
|
0.0937
|
|
0.0329
|
|
0.064
|
|
0.24
|
|
0.37
|
|
| Measurement Input, Quoted Price [Member] | Investor Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0.000
|
|
0.0731
|
|
0.0439
|
|
0.033
|
|
0.26
|
|
0.46
|
|
| Measurement Input, Quoted Price [Member] | Placement Agent Warrants Issued in Connection with 2021 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0.0157
|
|
0.0727
|
|
0.0256
|
|
0.061
|
|
0.23
|
|
0.36
|
|
| Warrant liabilities as of the closing date |
|
|
|
|
|
|
$ 167
|
|
$ 626
|
|
|
|
| Measurement Input, Quoted Price [Member] | Placement Agent Warrants Issued in Connection with 2020 Financing [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of the warrants |
0.000
|
|
0.0760
|
|
0.0456
|
|
0.036
|
|
0.28
|
|
0.49
|
|
| Warrant liabilities as of the closing date |
$ 0
|
|
$ 25
|
|
|
|
$ 57
|
|
$ 449
|
|
|
|
|
|