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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

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- Definition Amortized cost 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 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 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 + Details
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- Definition 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 -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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