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 |
|
49,040 |
|
$ |
129.60 |
|
2.8 |
|
|
|
Options granted |
|
10,000 |
|
$ |
0.86 |
|
|
|
|
|
Options canceled |
|
(22,615) |
|
$ |
130.82 |
|
|
|
|
|
Balance at December 31, 2023 |
|
36,425 |
|
$ |
93.55 |
|
3.5 |
|
|
|
Options expired |
|
(5,370) |
|
$ |
156.00 |
|
|
|
|
|
Options canceled |
|
(10,000) |
|
$ |
0.86 |
|
|
|
|
|
Balance at March 31, 2024 |
|
21,055 |
|
$ |
121.65 |
|
2.0 |
|
$ |
— |
Vested and exercisable at March 31, 2024 |
|
20,265 |
|
$ |
121.81 |
|
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 |
|
60,212 |
|
$ |
111.20 |
|
3.60 |
|
|
|
Options granted |
|
6,500 |
|
$ |
103.20 |
|
|
|
|
|
Options exercised |
|
(40) |
|
$ |
100.80 |
|
|
|
|
|
Options canceled / expired |
|
(17,632) |
|
$ |
50.20 |
|
|
|
|
|
Balance at December 31, 2022 |
|
49,040 |
|
$ |
129.60 |
|
2.8 |
|
|
|
Options granted |
|
10,000 |
|
$ |
0.86 |
|
|
|
|
|
Options canceled / expired |
|
(22,615) |
|
$ |
130.82 |
|
|
|
|
|
Balance at December 31, 2023 |
|
36,425 |
|
$ |
93.55 |
|
2.5 |
|
$ |
— |
Vested and exercisable at December 31, 2023 |
|
26,972 |
|
$ |
113.40 |
|
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 |
2,475 |
|
0.5 |
|
$ |
128.00 |
|
2,475 |
|
$ |
128.00 |
9,830 |
|
1.8 |
|
$ |
106.00 |
|
9,830 |
|
$ |
106.00 |
1,500 |
|
2.0 |
|
$ |
112.00 |
|
1,300 |
|
$ |
112.00 |
5,750 |
|
2.5 |
|
$ |
153.00 |
|
5,560 |
|
$ |
153.00 |
1,500 |
|
2.9 |
|
$ |
103.20 |
|
1,100 |
|
$ |
103.20 |
21,055 |
|
2.0 |
|
$ |
121.65 |
|
20,265 |
|
$ |
121.81 |
|
|
|
|
|
|
|
|
|
|
|
|
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 |
5,370 |
|
0.1 |
|
$ |
156.00 |
|
5,370 |
|
$ |
156.00 |
2,475 |
|
0.8 |
|
$ |
128.00 |
|
2,475 |
|
$ |
128.00 |
9,830 |
|
2.1 |
|
$ |
106.00 |
|
8,874 |
|
$ |
106.00 |
1,500 |
|
2.3 |
|
$ |
112.00 |
|
1,300 |
|
$ |
112.00 |
5,750 |
|
2.8 |
|
$ |
153.00 |
|
4,719 |
|
$ |
153.00 |
1,500 |
|
3.2 |
|
$ |
103.20 |
|
900 |
|
$ |
103.20 |
10,000 |
|
4.5 |
|
$ |
0.86 |
|
3,334 |
|
$ |
0.86 |
36,425 |
|
2.5 |
|
$ |
93.55 |
|
26,972 |
|
$ |
113.40 |
|
| 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 |
|
8,645 |
Debenture, warrants issued |
|
13,750 |
Other warrants issued |
|
9,000 |
December 2020 equity financing warrants issued |
|
163,579 |
Total warrant outstanding |
|
194,974 |
|
|
|
|
|
|
Number of Warrants outstanding |
Balance at December 31, 2021 |
|
197,000 |
Debenture, warrants issued |
|
9,000 |
Balance at December 31, 2022 |
|
206,000 |
Warrants expired |
|
(11,026) |
Warrants issued |
|
750,000 |
Warrants exercised |
|
(750,000) |
Balance at December 31, 2023 |
|
194,974 |
|