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Cash, Cash Equivalents and Short-Term Investments - Company's gross unrealized losses and fair value (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Cash, Cash Equivalents and Short-Term Investments |  |
Less than 12 Months, Fair Value | $ 78,707 |
12 Months or more, Fair Value | 219,767 |
Total, Fair Value | 298,474 |
Less than 12 Months, Unrealized Losses | (318) |
12 Months or more, Unrealized Losses | (315) |
Total, Unrealized Losses | (633) |
Realized gain (loss) on available-for-sale debt securities | 2,400 | $ (90)
U.S. Treasury notes |  |
Cash, Cash Equivalents and Short-Term Investments |  |
Less than 12 Months, Fair Value | 54,463 |
12 Months or more, Fair Value | 72,275 |
Total, Fair Value | 126,738 |
Less than 12 Months, Unrealized Losses | (298) |
12 Months or more, Unrealized Losses | (61) |
Total, Unrealized Losses | (359) |
Corporate debt securities |  |
Cash, Cash Equivalents and Short-Term Investments |  |
Less than 12 Months, Fair Value | 24,244 |
12 Months or more, Fair Value | 147,492 |
Total, Fair Value | 171,736 |
Less than 12 Months, Unrealized Losses | (20) |
12 Months or more, Unrealized Losses | (254) |
Total, Unrealized Losses | $ (274) |

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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 more 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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- 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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