Marketable Debt and Equity Securities - Maturities (Details) $ in Thousands	Sep. 30, 2024 USD ($)
Amortized Cost
Mature in one year or less	$ 433,602
Mature within two years	289,903
Amortized Cost	723,505
Estimated Fair Value
Mature in one year or less	435,043
Mature within two years	290,274
Estimated Fair Value	$ 725,317