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Marketable Securities (Tables) | 6 Months Ended
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Jun. 30, 2022
Marketable Securities [Abstract] |
Summary of Marketable Securities | Marketable securities consisted of the following as of the periods presented (in thousands):
|  | June 30, 2022 |
|  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |
Marketable Securities |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 207,869 |  |  | $ | — |  |  | $ | (1,942) |  |  | $ | 205,927 |  |
Certificates of deposit |  | 17,716 |  |  | — |  |  | (74) |  |  | 17,642 |  |
Corporate debt securities |  | 27,801 |  |  | — |  |  | (262) |  |  | 27,539 |  |
Commercial paper |  | 13,524 |  |  | — |  |  | (80) |  |  | 13,444 |  |
Asset-backed securities |  | 404 |  |  | — |  |  | (1) |  |  | 403 |  |
Total marketable securities |  | $ | 267,314 |  |  | $ | — |  |  | $ | (2,359) |  |  | $ | 264,955 |  |
|  | December 31, 2021
|  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Marketable Securities |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 157,681 |  |  | $ | — |  |  | $ | (404) |  |  | $ | 157,277 |
Certificates of deposit |  | 6,495 |  |  | — |  |  | (5) |  |  | 6,490 |
Corporate debt securities |  | 36,422 |  |  | — |  |  | (95) |  |  | 36,327 |
Commercial paper |  | 11,624 |  |  | 2 |  |  | (6) |  |  | 11,620 |
Asset-backed securities |  | 5,901 |  |  | 1 |  |  | (7) |  |  | 5,895 |
Total marketable securities |  | $ | 218,123 |  |  | $ | 3 |  |  | $ | (517) |  |  | $ | 217,609 |
Summary of Marketable Securities in an Unrealized Loss Position | Marketable securities in an unrealized loss position for less than 12 months consisted of the following as of the periods presented (in thousands):
|  | June 30, 2022 |  | December 31, 2021
|  | Fair Value |  | Gross Unrealized Loss |  | Fair Value |  | Gross Unrealized Loss
U.S. Treasury securities |  | $ | 205,927 |  |  | $ | (1,942) |  |  | $ | 143,590 |  |  | $ | (404) |
Certificates of deposit |  | 15,139 |  |  | (74) |  |  | 6,490 |  |  | (5) |
Corporate debt securities |  | 27,539 |  |  | (262) |  |  | 36,327 |  |  | (95) |
Commercial paper |  | 13,444 |  |  | (80) |  |  | 6,984 |  |  | (6) |
Asset-backed securities |  | 403 |  |  | (1) |  |  | 4,967 |  |  | (7) |
Total |  | $ | 262,452 |  |  | $ | (2,359) |  |  | $ | 198,358 |  |  | $ | (517) |
Summary of Remaining Contractual Maturities of Marketable Securities | The following summarizes the remaining contractual maturities of the Company’s marketable securities as of June 30, 2022 (in thousands):
| Fair Value
One year or less | $ | 259,168 |
Over one year through five years | 5,787 |
Total marketable securities | $ | 264,955 |

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- Definition Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455 + Details
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