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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2022
Fair Value Disclosures [Abstract] |
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis | Assets measured at fair value on a recurring basis are summarized below:
| Fair Value Measurement as of December 31, 2022
| Fair Value Measurement |  | Balance Sheet Classification
(in thousands) | Fair Value Level |  | Cost Basis |  | Unrealized Gains (Losses) |  | Fair Value |  | Cash and Cash Equivalents (b) |  | Short-term Investments and Marketable Securities |  |
Money market funds | Level 1 |  | $ | 232,018 |  |  | $ | — |  |  | $ | 232,018 |  |  | $ | 232,018 |  |  | $ | — |  |  |
Certificates of deposit | Level 2 |  | 990 |  |  | 6 |  |  | 996 |  |  | — |  |  | 996 |  |  |
Commercial paper | Level 2 |  | 1,281 |  |  | 6 |  |  | 1,287 |  |  | — |  |  | 1,287 |  |  |
Short-term bond mutual funds | Level 2 |  | 100,242 |  |  | (99) |  |  | 100,143 |  |  | — |  |  | 100,143 |  |  |
Corporate bonds(a) | Level 2 |  | 78,418 |  |  | (241) |  |  | 78,177 |  |  | — |  |  | 78,177 |  |  |
Total |  |  | $ | 412,949 |  |  | $ | (328) |  |  | $ | 412,621 |  |  | $ | 232,018 |  |  | $ | 180,603 |  |  |
(a) Includes $745 and $743 of cost basis and fair market value, respectively, with a weighted average maturity of 1.3 years.

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, 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://www.xbrl.org/2003/role/disclosureRef -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://www.xbrl.org/2003/role/disclosureRef -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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