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Cash, Cash Equivalents and Marketable Securities - Cash, Cash Equivalents and Available-for-Sale Marketable Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Cash and cash equivalents: |  |
Total cash and cash equivalents | $ 237,684 | $ 99,915
Marketable securities: |  |
Unrealized gains | 1,304 | 476
Unrealized losses | (33) | (8)
Cost | 1,002,356 | 633,663
Fair value | 1,003,627 | 634,131
Corporate Debt Securities |  |
Cash and cash equivalents: |  |
Total cash and cash equivalents | 58,841 | 3,664
Marketable securities: |  |
Cost | 436,277 | 382,028
Unrealized gains | 573 | 195
Unrealized losses | (25) | (7)
Fair value | 436,825 | 382,216
Corporate Debt Securities Due Within 1 To 2 Years of Date of Purchase |  |
Marketable securities: |  |
Cost |  | 977
Unrealized gains |  | 1
Unrealized losses |  | 0
Fair value |  | 978
U.S. Government and Government Sponsored Entities |  |
Cash and cash equivalents: |  |
Total cash and cash equivalents | 67,541 | 14,967
U.S. Government and Government Sponsored Entities Due Within 1 Year of Date of Purchase |  |
Marketable securities: |  |
Cost | 297,160 | 150,743
Unrealized gains | 411 | 280
Unrealized losses | (7) | (1)
Fair value | 297,564 | 151,022
U.S. government and government sponsored entities due within 1 to 2 years of date of purchase |  |
Marketable securities: |  |
Cost | 31,235 |
Unrealized gains | 320 |
Unrealized losses | (1) |
Fair value | 31,554 |
Cash |  |
Cash and cash equivalents: |  |
Total cash and cash equivalents | 25,242 | 2,729
Money Market Funds |  |
Cash and cash equivalents: |  |
Total cash and cash equivalents | $ 86,060 | $ 78,555

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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings, and cash and cash equivalents. + References No definition available. + 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 No definition available. + Details
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