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Cash, Cash Equivalents and Short-Term Investments - Company's gross unrealized losses and fair value (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cash, Cash Equivalents and Short-Term Investments |  |  |
Less than 12 Months, Fair Value | $ 53,726 |  |
12 Months or more, Fair Value | 255,597 |  |
Total, Fair Value | 309,323 |  |
Less than 12 Months, Unrealized Losses | (22) |  |
Total, Unrealized Losses | (22) |  |
Realized loss on available-for-sale debt securities | (67) | $ (102) | $ (81)
U.S. Treasury notes |  |  |
Cash, Cash Equivalents and Short-Term Investments |  |  |
Less than 12 Months, Fair Value | 44,693 |  |
12 Months or more, Fair Value | 91,972 |  |
Total, Fair Value | 136,665 |  |
Less than 12 Months, Unrealized Losses | (21) |  |
Total, Unrealized Losses | (21) |  |
Corporate debt securities |  |  |
Cash, Cash Equivalents and Short-Term Investments |  |  |
Less than 12 Months, Fair Value | 9,033 |  |
12 Months or more, Fair Value | 163,625 |  |
Total, Fair Value | 172,658 |  |
Less than 12 Months, Unrealized Losses | (1) |  |
Total, Unrealized Losses | $ (1) |  |

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- Definition It represents the amount of aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. + References No definition available. + Details
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- Definition It represents the amount of aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer. + References No definition available. + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479081/326-30-55-8 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-7 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-5 + Details
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