| Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 |
|---|
| Cash and cash equivalents | 263 | 241 | 363 | - |
|---|
| Marketable securities, current | - | 319 | 127 | - |
|---|
| Accounts Receivable, after Allowance for Credit Loss, Current | - | 13 | 7 | - |
|---|
| Prepaid expenses and other current assets | 10 | 17 | 5 | - |
|---|
| Total current assets | 273 | 591 | 502 | - |
|---|
| Property and equipment, net | - | 10 | 3 | 15 |
|---|
| Operating Lease, Right-of-Use Asset | - | 15 | 0 | - |
|---|
| Marketable securities, non-current | - | 183 | 57 | - |
|---|
| Non-marketable equity securities | - | 56 | 56 | - |
|---|
| Other non-current assets | 4 | 3 | 4 | - |
|---|
| Total non-current assets | 9 | 432 | 120 | 71 |
|---|
| Total assets | 282 | 1,023 | 621 | - |
|---|
| Accounts payable | 22 | 20 | 2 | - |
|---|
| Operating Lease, Liability, Current | - | 2 | 2 | - |
|---|
| Other current liabilities | 20 | 65 | 46 | - |
|---|
| Total current liabilities | 47 | 87 | 49 | - |
|---|
| Operating Lease, Liability, Noncurrent | - | 14 | 12 | - |
|---|
| Warrants and Rights Outstanding | - | 6 | 0 | - |
|---|
| Long-term debt, net of current portion | - | 279 | 273 | - |
|---|
| Other non-current liabilities | 0 | 14 | 8 | - |
|---|
| Total non-current liabilities | 0 | 312 | 293 | 135 |
|---|
| Total liabilities | 47 | 399 | 343 | - |
|---|
| Common Stock, Value, Issued | 0 | 0 | 0 | - |
|---|
| Additional paid-in capital | 450 | 1,044 | 1,153 | - |
|---|
| Accumulated other comprehensive loss | - | -0 | -2 | - |
|---|
| Accumulated deficit | -215 | -420 | -873 | - |
|---|
| Total stockholders’ equity | 235 | 624 | 278 | - |
|---|
| Total liabilities and stockholders’ equity | 282 | 1,023 | 621 | - |
|---|