Short-term Investments - Stated Maturities of Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Amortized Cost
Due within one year	$ 309,082	$ 447,827
Due after one year through two years	124,600	0
Amortized Cost	433,682	447,827
Estimated Fair Value
Due within one year	308,166	440,858
Due after one year through two years	124,188	0
Total	$ 432,354	$ 440,858