| Mar 31,
2018 | Mar 31,
2019 | Dec 31,
2019 | Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 |
|---|
| Cash and cash equivalents | 449,942 | 30,487 | 15 | 24 | 177 | 78 | 37 |
|---|
| Marketable Securities, Current | - | - | - | 40 | 48 | 48 | 19 |
|---|
| Accounts receivable | - | - | 1 | 1 | 4 | 4 | 3 |
|---|
| Inventory | - | - | 0 | 0 | 0 | 2 | 1 |
|---|
| Prepaid expenses and other current assets | - | - | 1 | 2 | 3 | 4 | 2 |
|---|
| Total current assets | 543,445 | 81,744 | 17 | 67 | 233 | 136 | 62 |
|---|
| Property and equipment, net | - | - | 1 | 3 | 5 | 6 | 5 |
|---|
| Operating lease right-of-use assets | - | - | - | - | 8 | 56 | 52 |
|---|
| Restricted cash | - | - | - | - | 3 | - | 3 |
|---|
| Other assets | - | - | 0 | 0 | 0 | 0 | - |
|---|
| Total assets | 147 | 12 | 18 | 70 | 248 | 202 | 122 |
|---|
| Accounts payable | - | - | 2 | 2 | 3 | 2 | 1 |
|---|
| Accrued compensation | - | - | 1 | 2 | 5 | 8 | 7 |
|---|
| Accrued liabilities | - | - | 0 | 1 | 1 | 3 | 2 |
|---|
| Short-term deferred revenue | - | - | - | - | - | 0 | 0 |
|---|
| Operating Lease, Liability, Current | - | - | - | - | 1 | 2 | 3 |
|---|
| Finance Lease, Liability, Current | - | - | - | 0 | 0 | 0 | 0 |
|---|
| Total current liabilities | 41,948 | 2 | 6 | 5 | 12 | 16 | 13 |
|---|
| Warrant liability | - | - | - | - | 0 | 0 | - |
|---|
| Finance Lease, Liability, Noncurrent | - | - | - | 0 | 0 | 0 | 0 |
|---|
| Operating lease liabilities, long-term | - | - | - | - | 6 | 54 | 51 |
|---|
| Total liabilities | 5 | 7 | 6 | 6 | 19 | 70 | 65 |
|---|
| Common Stock, Value, Issued | 4 | 3 | 0 | 0 | 0 | 0 | 0 |
|---|
| Additional paid-in capital | - | - | 104 | 190 | 436 | 456 | 481 |
|---|
| Accumulated other comprehensive income/(loss) | - | - | - | -0 | -0 | -1 | 0 |
|---|
| Accumulated deficit | 853,614 | 2 | -91 | -126 | -206 | -323 | -424 |
|---|
| Total stockholders’ equity | 5 | 5 | 12 | 63 | 230 | 132 | 57 |
|---|
| Total liabilities and stockholders’ equity | 147 | 12 | 18 | 70 | 248 | 202 | 122 |
|---|