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Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2021
Fair Value Disclosures [Abstract] |
Summary of Cash and Cash Equivalents, Money Market Funds and Short-term Investments by Significant Investment Category | The following tables show the Company’s cash and cash equivalents, Money Market Funds and short-term investments by significant investment category as of December 31, 2021 and 2020 (in thousands):
| As of December 31, 2021
| Adjusted Cost |  | Unrealized Gains |  | Unrealized Losses |  | Market Value
Level 1: |  |  |  |  |  |  |
Money Market Funds | $ | 15,329 |  |  | $ | — |  |  | $ | — |  |  | $ | 15,329 |
Level 2: |  |  |  |  |  |  |
U.S. government agency securities included in short-term investments | 5,003 |  |  | — |  |  | — |  |  | 5,003 |
Corporate debt securities included in cash and cash equivalents and short-term investments | 163,626 |  |  | 1 |  |  | (202) |  |  | 163,425 |
Total financial assets | $ | 183,958 |  |  | $ | 1 |  |  | $ | (202) |  |  | $ | 183,757 |
| As of December 31, 2020
| Adjusted Cost |  | Unrealized Gains |  | Unrealized Losses |  | Market Value
Level 1: |  |  |  |  |  |  |
Money Market Funds | $ | 27,686 |  |  | $ | — |  |  | $ | — |  |  | $ | 27,686 |
Level 2: |  |  |  |  |  |  |
U.S. Treasury securities included in short-term investments | 63,101 |  |  | 4 |  |  | (1) |  |  | 63,104 |
U.S. government agency securities included in short-term investments | 54,183 |  |  | 10 |  |  | — |  |  | 54,193 |
Corporate debt securities included in cash and cash equivalents and short-term investments | 118,759 |  |  | 1 |  |  | (46) |  |  | 118,714 |
Total financial assets | $ | 263,729 |  |  | $ | 15 |  |  | $ | (47) |  |  | $ | 263,697 |
Summery of Remaining Contractual Maturities of Company’s Short-term Investments | The following summarizes the remaining contractual maturities of the Company’s short-term investments as of December 31, 2021:
| Adjusted Cost |  | Market Value
Mature in 1 year or less | $ | 114,076 |  |  | $ | 113,974 |
Mature in 1 to 2 years | 35,054 |  |  | 34,956 |
Total | $ | 149,130 |  |  | $ | 148,930 |

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