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Short-Term Investments (Details) $ in Thousands	Mar. 31, 2024 USD ($) item	Dec. 31, 2023 USD ($) item
Short-term Investments
Short-Term Investments
Amortized Cost	$ 197,909	$ 71,000
Gross Unrealized Gains	1
Gross Unrealized Losses	(15)
Fair Value	$ 197,895	$ 71,000
Number of short term investments in unrealized loss position for less than 12 months | item	14	0
Aggregate value of short term investments in unrealized loss position for less than 12 months	$ 98,200
Treasury bills
Short-Term Investments
Amortized Cost	103,263
Gross Unrealized Gains	1
Gross Unrealized Losses	(13)
Fair Value	103,251
Reverse repurchase agreements
Short-Term Investments
Amortized Cost	80,000	$ 71,000
Fair Value	80,000	$ 71,000
Treasury notes
Short-Term Investments
Amortized Cost	14,646
Gross Unrealized Losses	(2)
Fair Value	$ 14,644

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Amortized cost, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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