Short-term Investments - Stated Maturities of Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Amortized Cost
Due within one year	$ 90,438	$ 447,827
Due after one year through five years	177,278	0
Amortized Cost	267,716	447,827
Estimated Fair Value
Due within one year	90,533	440,858
Due after one year through five years	178,191	0
Estimated Fair Value	$ 268,724	$ 440,858