Fair Value Measurements - Summary of Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($)
|
Dec. 31, 2021 |
Dec. 31, 2020 |
| Assets: |
|
|
| Marketable securities: |
$ 13,998,000
|
$ 0
|
| Liabilities: |
|
|
| Warrant liabilities |
25,423,000
|
28,708,000
|
| Corporate bonds |
|
|
| Assets: |
|
|
| Marketable securities: |
2,006,000
|
|
| Commercial paper |
|
|
| Assets: |
|
|
| Marketable securities: |
11,992,000
|
|
| Recurring |
|
|
| Assets: |
|
|
| Total assets |
80,561,000
|
80,576,000
|
| Liabilities: |
|
|
| Warrant liabilities |
25,423,000
|
28,708,000
|
| Total liabilities |
25,423,000
|
28,708,000
|
| Recurring | Level 1 |
|
|
| Assets: |
|
|
| Total assets |
66,563,000
|
80,576,000
|
| Liabilities: |
|
|
| Warrant liabilities |
0
|
0
|
| Total liabilities |
0
|
0
|
| Recurring | Level 2 |
|
|
| Assets: |
|
|
| Total assets |
13,998,000
|
0
|
| Liabilities: |
|
|
| Warrant liabilities |
0
|
0
|
| Total liabilities |
0
|
0
|
| Recurring | Level 3 |
|
|
| Assets: |
|
|
| Total assets |
0
|
0
|
| Liabilities: |
|
|
| Warrant liabilities |
25,423,000
|
28,708,000
|
| Total liabilities |
25,423,000
|
28,708,000
|
| Recurring | Corporate bonds |
|
|
| Assets: |
|
|
| Marketable securities: |
2,006,000
|
|
| Recurring | Corporate bonds | Level 1 |
|
|
| Assets: |
|
|
| Marketable securities: |
0
|
|
| Recurring | Corporate bonds | Level 2 |
|
|
| Assets: |
|
|
| Marketable securities: |
2,006,000
|
|
| Recurring | Corporate bonds | Level 3 |
|
|
| Assets: |
|
|
| Marketable securities: |
0
|
|
| Recurring | Commercial paper |
|
|
| Assets: |
|
|
| Marketable securities: |
11,992,000
|
|
| Recurring | Commercial paper | Level 1 |
|
|
| Assets: |
|
|
| Marketable securities: |
0
|
|
| Recurring | Commercial paper | Level 2 |
|
|
| Assets: |
|
|
| Marketable securities: |
11,992,000
|
|
| Recurring | Commercial paper | Level 3 |
|
|
| Assets: |
|
|
| Marketable securities: |
0
|
|
| Recurring | Money market funds (included in cash equivalents) |
|
|
| Assets: |
|
|
| Money market funds (included in cash equivalents) |
66,563,000
|
80,576,000
|
| Recurring | Money market funds (included in cash equivalents) | Level 1 |
|
|
| Assets: |
|
|
| Money market funds (included in cash equivalents) |
66,563,000
|
80,576,000
|
| Recurring | Money market funds (included in cash equivalents) | Level 2 |
|
|
| Assets: |
|
|
| Money market funds (included in cash equivalents) |
0
|
0
|
| Recurring | Money market funds (included in cash equivalents) | Level 3 |
|
|
| Assets: |
|
|
| Money market funds (included in cash equivalents) |
$ 0
|
$ 0
|