SHAREHOLDERS' (DEFICIT) EQUITY (Tables)
|
3 Months Ended |
12 Months Ended |
Mar. 31, 2024 |
Dec. 31, 2023 |
| Equity [Abstract] |
|
|
| Schedule of stock options activity |
|
|
|
|
|
|
|
|
|
|
|
|
|
Options Outstanding |
|
|
|
|
Weighted |
|
Weighted |
|
|
|
|
|
|
|
Average |
|
Average |
|
|
|
|
|
Number of |
|
Exercise |
|
Remaining |
|
Aggregate |
|
|
Shares Subject |
|
Price Per |
|
Contractual |
|
Intrinsic Value |
|
|
to Options |
|
Share |
|
Life (in years) |
|
(in thousands) |
Balance at December 31, 2022 |
|
2,724 |
|
$ |
2,332.80 |
|
2.8 |
|
|
|
Options granted |
|
556 |
|
$ |
15.48 |
|
|
|
|
|
Options canceled |
|
(1,256) |
|
$ |
2,354.76 |
|
|
|
|
|
Balance at December 31, 2023 |
|
2,024 |
|
$ |
1,683.90 |
|
3.5 |
|
|
|
Options expired |
|
(298) |
|
$ |
2,808.00 |
|
|
|
|
|
Options canceled |
|
(556) |
|
$ |
15.48 |
|
|
|
|
|
Balance at March 31, 2024 |
|
1,170 |
|
$ |
2,189.70 |
|
2.0 |
|
$ |
— |
Vested and exercisable at March 31, 2024 |
|
1,126 |
|
$ |
2,192.58 |
|
1.9 |
|
$ |
— |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Options Outstanding |
|
|
|
|
Weighted |
|
Weighted |
|
|
|
|
|
|
|
Average |
|
Average |
|
|
|
|
|
Number of |
|
Exercise |
|
Remaining |
|
Aggregate |
|
|
Shares Subject |
|
Price Per |
|
Contractual |
|
Intrinsic Value |
|
|
to Options |
|
Share |
|
Life (in years) |
|
(in thousands) |
Balance at December 31, 2021 |
|
3,345 |
|
$ |
2,001.60 |
|
3.60 |
|
|
|
Options granted |
|
361 |
|
$ |
1,857.60 |
|
|
|
|
|
Options exercised |
|
-2 |
|
$ |
1,814.40 |
|
|
|
|
|
Options canceled / expired |
|
-980 |
|
$ |
903.60 |
|
|
|
|
|
Balance at December 31, 2022 |
|
2,724 |
|
$ |
2,332.80 |
|
2.8 |
|
|
|
Options granted |
|
556 |
|
$ |
15.48 |
|
|
|
|
|
Options canceled / expired |
|
-1,256 |
|
$ |
2,354.76 |
|
|
|
|
|
Balance at December 31, 2023 |
|
2,024 |
|
$ |
1,683.90 |
|
2.5 |
|
$ |
— |
Vested and exercisable at December 31, 2023 |
|
1,498 |
|
$ |
2,041.20 |
|
2.0 |
|
$ |
— |
|
| Schedule of stock options outstanding and exercisable |
|
|
|
|
|
|
|
|
|
|
|
Options Outstanding |
|
Options Exercisable |
|
|
Weighted |
|
|
|
|
|
|
|
|
Average |
|
Weighted |
|
|
|
Weighted |
|
|
Remaining |
|
Average |
|
|
|
Average |
Number of |
|
Contractual |
|
Exercise Price |
|
Number |
|
Exercise Price |
Outstanding |
|
Life (in years) |
|
Per Share |
|
Exercisable |
|
Per Share |
138 |
|
0.5 |
|
$ |
2,304.00 |
|
138 |
|
$ |
2,304.00 |
546 |
|
1.8 |
|
$ |
1,908.00 |
|
546 |
|
$ |
1,908.00 |
83 |
|
2.0 |
|
$ |
2,016.00 |
|
72 |
|
$ |
2,016.00 |
319 |
|
2.5 |
|
$ |
2,754.00 |
|
309 |
|
$ |
2,754.00 |
83 |
|
2.9 |
|
$ |
1,857.60 |
|
61 |
|
$ |
1,857.60 |
1,170 |
|
2.0 |
|
$ |
2,189.70 |
|
1,126 |
|
$ |
2,192.58 |
|
|
|
|
|
|
|
|
|
|
|
|
Options Outstanding |
|
Options Exercisable |
|
|
Weighted |
|
|
|
|
|
|
|
|
Average |
|
Weighted |
|
|
|
Weighted |
|
|
Remaining |
|
Average |
|
|
|
Average |
Number of |
|
Contractual |
|
Exercise Price |
|
Number |
|
Exercise Price |
Outstanding |
|
Life (in years) |
|
Per Share |
|
Exercisable |
|
Per Share |
298 |
|
0.1 |
|
$ |
2,808.00 |
|
298 |
|
$ |
2,808.00 |
138 |
|
0.8 |
|
$ |
2,304.00 |
|
138 |
|
$ |
2,304.00 |
546 |
|
2.1 |
|
$ |
1,908.00 |
|
493 |
|
$ |
1,908.00 |
83 |
|
2.3 |
|
$ |
2,016.00 |
|
72 |
|
$ |
2,016.00 |
319 |
|
2.8 |
|
$ |
2,754.00 |
|
262 |
|
$ |
2,754.00 |
83 |
|
3.2 |
|
$ |
1,857.60 |
|
50 |
|
$ |
1,857.60 |
556 |
|
4.5 |
|
$ |
15.48 |
|
185 |
|
$ |
15.48 |
2,024 |
|
2.5 |
|
$ |
1,683.90 |
|
1,498 |
|
$ |
2,041.20 |
|
| Schedule of assumptions used to determine fair value of the awards |
|
|
|
|
|
|
|
|
|
Year Ended December 31, |
|
|
|
2023 |
|
2022 |
|
Expected life (in years) |
|
5.0 |
|
5.0 |
|
Risk-free interest rate |
|
4.0 |
% |
1.7 |
% |
Dividend yield |
|
— |
% |
— |
% |
Expected volatility |
|
137 |
% |
132 |
% |
|
| Schedule of warrants |
|
|
|
|
|
Number of Warrants outstanding |
Convertible debt, warrants issued |
|
480 |
Debenture, warrants issued |
|
764 |
Other warrants issued |
|
500 |
December 2020 equity financing warrants issued |
|
9,088 |
Total warrant outstanding |
|
10,832 |
|
|
|
|
|
|
Number of Warrants outstanding |
Balance at December 31, 2021 |
|
10,944 |
Debenture, warrants issued |
|
500 |
Balance at December 31, 2022 |
|
11,444 |
Warrants expired |
|
(613) |
Warrants issued |
|
41,667 |
Warrants exercised |
|
(41,667) |
Balance at December 31, 2023 |
|
10,832 |
|