CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
| Preferred stock, par value (in dollars per share) |
$ 0.0001
|
$ 0.0001
|
| Preferred stock, shares authorized (in shares) |
5,000,000
|
5,000,000
|
| Preferred stock, shares issued (in shares) |
0
|
0
|
| Preferred stock, shares outstanding (in shares) |
0
|
0
|
| Common stock, par value (in dollars per share) |
$ 0.0001
|
$ 0.0001
|
| Common stock, shares authorized (in shares) |
500,000,000
|
500,000,000
|
| Common stock, shares issued (in shares) |
162,500,425
|
81,351,533
|
| Common stock, shares outstanding (in shares) |
162,500,425
|
81,351,533
|
| Long-term convertible notes payable (Note 5) |
$ 0
|
$ 25,211
|
| Series B1 Convertible Preferred Stock |
|
|
| Convertible preferred stock, par value (in dollars per share) |
$ 0.0001
|
$ 0.0001
|
| Convertible preferred stock, issued (in shares) |
5,000
|
0
|
| Convertible preferred stock, outstanding (in shares) |
0
|
0
|
| Series B-2 convertible preferred stock |
|
|
| Convertible preferred stock, par value (in dollars per share) |
$ 0.0001
|
$ 0.0001
|
| Convertible preferred stock, issued (in shares) |
5,000
|
0
|
| Convertible preferred stock, outstanding (in shares) |
5,000
|
0
|