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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2022
Fair Value Disclosures [Abstract] |
Schedule of Assets Carried at Fair Value and Measured on a Recurring Basis | The following table details the assets carried at fair value and measured on a recurring basis within the three levels of fair value as of June 30, 2022 and December 31, 2021:
(in thousands) |  |  |  | Gross Unrealized |  |  |  | Reported as:
June 30, 2022 |  | Amortized Cost |  | Gains |  | Losses |  | Fair Value |  | Cash and cash equivalents |  | Short-term investments |  | Long-term investments
Level 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual funds |  | $ | 1,821 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,821 |  |  | $ | 1,821 |  |  | $ | — |  |  | $ | — |
U.S. treasury securities |  | 39,405 |  |  | 18 |  |  | (246) |  |  | 39,177 |  |  | — |  |  | 14,976 |  |  | 24,201 |
Total Level 1 |  | 41,226 |  |  | 18 |  |  | (246) |  |  | 40,998 |  |  | 1,821 |  |  | 14,976 |  |  | 24,201 |
Level 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  | 266,695 |  |  | 2 |  |  | (207) |  |  | 266,490 |  |  | 208,533 |  |  | 57,957 |  |  | — |
Corporate debt securities |  | 7,365 |  |  | — |  |  | (135) |  |  | 7,230 |  |  | — |  |  | 7,230 |  |  | — |
Agency bonds |  | 20,378 |  |  | 19 |  |  | (219) |  |  | 20,178 |  |  | — |  |  | 8,821 |  |  | 11,357 |
Total Level 2 |  | 294,438 |  |  | 21 |  |  | (561) |  |  | 293,898 |  |  | 208,533 |  |  | 74,008 |  |  | 11,357 |
Total Level 1 and Level 2 |  | $ | 335,664 |  |  | $ | 39 |  |  | $ | (807) |  |  | $ | 334,896 |  |  | $ | 210,354 |  |  | $ | 88,984 |  |  | $ | 35,558 |
(in thousands) |  |  |  | Gross Unrealized |  |  |  | Reported as:
December 31, 2021 |  | Amortized Cost |  | Gains |  | Losses |  | Fair Value |  | Cash and cash equivalents |  | Short-term investments |  | Long-term investments
Level 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual funds |  | $ | 21,925 |  |  | $ | — |  |  | $ | — |  |  | $ | 21,925 |  |  | $ | 21,925 |  |  | $ | — |  |  | $ | — |
U.S. treasury securities |  | 15,156 |  |  | — |  |  | (20) |  |  | 15,136 |  |  | — |  |  | 15,136 |  |  | — |
Total Level 1 |  | 37,081 |  |  | — |  |  | (20) |  |  | 37,061 |  |  | 21,925 |  |  | 15,136 |  |  | — |
Level 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  | 301,906 |  |  | 2 |  |  | (90) |  |  | 301,818 |  |  | 163,694 |  |  | 138,124 |  |  | — |
Corporate debt securities |  | 14,299 |  |  | — |  |  | (36) |  |  | 14,263 |  |  | — |  |  | 6,850 |  |  | 7,413 |
Agency bonds |  | 8,998 |  |  | — |  |  | (40) |  |  | 8,958 |  |  | — |  |  | — |  |  | 8,958 |
Total Level 2 |  | 325,203 |  |  | 2 |  |  | (166) |  |  | 325,039 |  |  | 163,694 |  |  | 144,974 |  |  | 16,371 |
Total Level 1 and Level 2 |  | $ | 362,284 |  |  | $ | 2 |  |  | $ | (186) |  |  | $ | 362,100 |  |  | $ | 185,619 |  |  | $ | 160,110 |  |  | $ | 16,371 |

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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