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Cash, Cash Equivalents and Short-Term Investments - Available-for-sale Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Cash, Cash Equivalents and Short-Term Investments
Amortized Cost	$ 298,213	$ 302,581
Unrealized Gains	893	6,764
Unrealized Losses	(632)	(22)
Fair Value	298,474	309,323
U.S. Treasury notes
Cash, Cash Equivalents and Short-Term Investments
Amortized Cost	126,776	133,989
Unrealized Gains	321	2,697
Unrealized Losses	(359)	(21)
Fair Value	126,738	136,665
Corporate debt securities
Cash, Cash Equivalents and Short-Term Investments
Amortized Cost	171,437	168,592
Unrealized Gains	572	4,067
Unrealized Losses	(273)	(1)
Fair Value	$ 171,736	$ 172,658

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

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- Definition

Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

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- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479130/326-30-45-1

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section 45
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