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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2023
Fair Value Disclosures [Abstract] |
Schedule of Fair Value, Assets Measured on Recurring and Nonrecurring Basis | The following tables set forth the amortized cost, gross unrealized gains, gross unrealized losses and fair values of the Company’s marketable securities accounted for as available-for-sale securities as of June 30, 2023 and December 31, 2022.
|  | June 30, 2023
(in thousands) |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Financial Assets: |  |  |  |  |  |  |  |
Short-term marketable securities: |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 32,218 |  |  | $ | — |  |  | $ | (338) |  |  | $ | 31,880 |
Yankee bonds |  | 2,608 |  |  | — |  |  | (58) |  |  | 2,550 |
Agency bonds |  | 6,025 |  |  | — |  |  | (119) |  |  | 5,906 |
Municipal bonds |  | 12,768 |  |  | — |  |  | (937) |  |  | 11,831 |
Commercial paper |  | 2,929 |  |  | — |  |  | — |  |  | 2,929 |
Asset-backed securities |  | 15,537 |  |  | — |  |  | (180) |  |  | 15,357 |
Corporate bonds |  | 51,299 |  |  | 1 |  |  | (1,481) |  |  | 49,819 |
Total |  | $ | 123,384 |  |  | $ | 1 |  |  | $ | (3,113) |  |  | $ | 120,272 |
|  | December 31, 2022
(in thousands) |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Financial Assets: |  |  |  |  |  |  |  |
Short-term marketable securities: |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 56,426 |  |  | $ | — |  |  | $ | (651) |  |  | $ | 55,775 |
Yankee bonds |  | 5,358 |  |  | — |  |  | (92) |  |  | 5,266 |
Agency bonds |  | 12,485 |  |  | — |  |  | (116) |  |  | 12,369 |
Municipal bonds |  | 12,841 |  |  | — |  |  | (1,030) |  |  | 11,811 |
Commercial paper |  | 2,846 |  |  | 8 |  |  | — |  |  | 2,854 |
Asset-backed securities |  | 25,544 |  |  | 2 |  |  | (427) |  |  | 25,119 |
Corporate bonds |  | 63,748 |  |  | 3 |  |  | (2,136) |  |  | 61,615 |
Total |  | $ | 179,248 |  |  | $ | 13 |  |  | $ | (4,452) |  |  | $ | 174,809 |
Schedule of Investments Classified by Contractual Maturity Date | The following tables set forth the fair value of available-for-sale marketable securities by contractual maturity at June 30, 2023 and December 31, 2022.
|  | June 30, 2023
(in thousands) |  | One Year or Less |  | Over One Year Through Five Years |  | Over Five Years |  | Total
Financial Assets: |  |  |  |  |  |  |  |
Marketable Securities: |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 31,880 |  |  | $ | — |  |  | $ | — |  |  | $ | 31,880 |
Yankee bonds |  | 2,550 |  |  | — |  |  | — |  |  | 2,550 |
Agency bonds |  | 3,557 |  |  | 2,349 |  |  | — |  |  | 5,906 |
Municipal bonds |  | — |  |  | 11,831 |  |  | — |  |  | 11,831 |
Commercial paper |  | 2,929 |  |  | — |  |  | — |  |  | 2,929 |
Asset-backed securities |  | 15,357 |  |  | — |  |  | — |  |  | 15,357 |
Corporate bonds |  | 32,429 |  |  | 17,390 |  |  | — |  |  | 49,819 |
Total |  | $ | 88,702 |  |  | $ | 31,570 |  |  | $ | — |  |  | $ | 120,272 |
|  | December 31, 2022
(in thousands) |  | One Year or Less |  | Over One Year Through Five Years |  | Over Five Years |  | Total
Financial Assets: |  |  |  |  |  |  |  |
Marketable Securities: |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 40,795 |  |  | $ | 14,980 |  |  | $ | — |  |  | $ | 55,775 |
Yankee bonds |  | 2,734 |  |  | 2,532 |  |  | — |  |  | 5,266 |
Agency bonds |  | 6,470 |  |  | 5,899 |  |  | — |  |  | 12,369 |
Municipal bonds |  | — |  |  | 11,811 |  |  | — |  |  | 11,811 |
Commercial paper |  | 2,854 |  |  | — |  |  | — |  |  | 2,854 |
Asset-backed securities |  | 23,179 |  |  | 1,940 |  |  | — |  |  | 25,119 |
Corporate bonds |  | 35,377 |  |  | 26,238 |  |  | — |  |  | 61,615 |
Total |  | $ | 111,409 |  |  | $ | 63,400 |  |  | $ | — |  |  | $ | 174,809 |
Schedule of Fair Value, Assets Measured on Recurring Basis | The following tables set forth the Company’s cash equivalents and marketable securities accounted for as available-for-sale securities that were measured at fair value on a recurring basis based on the fair value hierarchy as of June 30, 2023 and December 31, 2022.
|  | June 30, 2023
(in thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Financial Assets: |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |
Money market funds |  | $ | 283,214 |  |  | $ | — |  |  | $ | — |  |  | $ | 283,214 |
Marketable securities: |  |  |  |  |  |  |  |
U.S. Treasury securities |  | 31,880 |  |  | — |  |  | — |  |  | 31,880 |
Yankee bonds |  | 2,550 |  |  | — |  |  | — |  |  | 2,550 |
Agency bonds |  | 5,906 |  |  | — |  |  | — |  |  | 5,906 |
Municipal bonds |  | 11,831 |  |  | — |  |  | — |  |  | 11,831 |
Commercial paper |  | — |  |  | 2,929 |  |  | — |  |  | 2,929 |
Asset-backed securities |  | — |  |  | 15,357 |  |  | — |  |  | 15,357 |
Corporate bonds |  | — |  |  | 49,819 |  |  | — |  |  | 49,819 |
Total |  | $ | 335,381 |  |  | $ | 68,105 |  |  | $ | — |  |  | $ | 403,486 |
|  | December 31, 2022
(in thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Financial Assets: |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |
Money market funds |  | $ | 196,749 |  |  | $ | — |  |  | $ | — |  |  | $ | 196,749 |
Commercial paper |  | — |  |  | 36,965 |  |  | — |  |  | 36,965 |
Marketable securities: |  |  |  |  |  |  |  |
U.S. Treasury securities |  | 55,775 |  |  | — |  |  | — |  |  | 55,775 |
Yankee bonds |  | 5,266 |  |  | — |  |  | — |  |  | 5,266 |
Agency bonds |  | 12,369 |  |  | — |  |  | — |  |  | 12,369 |
Municipal bonds |  | 11,811 |  |  | — |  |  | — |  |  | 11,811 |
Commercial paper |  | — |  |  | 2,854 |  |  | — |  |  | 2,854 |
Asset-backed securities |  | — |  |  | 25,119 |  |  | — |  |  | 25,119 |
Corporate bonds |  | — |  |  | 61,615 |  |  | — |  |  | 61,615 |
Total |  | $ | 281,970 |  |  | $ | 126,553 |  |  | $ | — |  |  | $ | 408,523 |

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- Definition Tabular disclosure of assets measured at fair value measured on a recurring or nonrecurring basis. Includes, but is not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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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 -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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