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Fair Value of Financial Instruments - Marketable Securities Portfolio (Details) - Debt securities (government) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Summary of marketable security portfolio
Amortized Cost	$ 506,379	$ 442,816
Net Unrealized Losses	(1,895)	(149)
Estimated Fair Value	$ 504,484	$ 442,667
Minimum
Summary of marketable security portfolio
Contractual maturity dates	12 months
Maximum
Summary of marketable security portfolio
Contractual maturity dates	18 months

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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