Cash, Cash Equivalents And Marketable Securities - Summarizes the Unrealized Gains and Losses in Fair Value of the Company's Investments in Debt Securities (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2024	Dec. 31, 2023
Marketable Securities [Line Items]
Amortized Cost	$ 381,165	$ 159,434
Unrealized Gains	46	271
Unrealized Losses	(496)	(20)
Estimated Fair Value	380,715	159,685
Cash and Cash Equivalents	25,085	45,681
Marketable Securities	359,302	115,035
Cash Equivalents and Marketable Securities [Member]
Marketable Securities [Line Items]
Amortized Cost	381,165	159,434
Unrealized Gains	46	271
Unrealized Losses	(496)	(20)
Estimated Fair Value	380,715	159,685
Cash and Cash Equivalents	21,413	44,650
Marketable Securities	359,302	115,035
Money Market Funds [Member] \| Level 1
Marketable Securities [Line Items]
Amortized Cost	17,429	44,650
Unrealized Gains	0	0
Unrealized Losses	0	0
Estimated Fair Value	17,429	44,650
Cash and Cash Equivalents	17,429	44,650
Marketable Securities	0	0
US Government Bonds [Member] \| Level 2
Marketable Securities [Line Items]
Amortized Cost	227,249	63,619
Unrealized Gains	11	70
Unrealized Losses	(242)	(6)
Estimated Fair Value	227,018	63,683
Cash and Cash Equivalents	0	0
Marketable Securities	227,018	63,683
US Government Agency Securities [Member] \| Level 2
Marketable Securities [Line Items]
Amortized Cost	12,492	19,665
Unrealized Gains	0	7
Unrealized Losses	(5)	(14)
Estimated Fair Value	12,487	19,658
Cash and Cash Equivalents	0	0
Marketable Securities	12,487	19,658
Corporate Debt Securities [Member] \| Level 2
Marketable Securities [Line Items]
Amortized Cost	123,995	31,500
Unrealized Gains	35	194
Unrealized Losses	(249)	0
Estimated Fair Value	123,781	31,694
Cash and Cash Equivalents	3,984	0
Marketable Securities	119,797	31,694
Cash [Member]
Marketable Securities [Line Items]
Cash and Cash Equivalents	$ 3,672	$ 1,031

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1))
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

Reference 3: 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 of unrealized gain 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/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

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

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
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-Section S99
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
-Section S99
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