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Investments - Schedule of Contractual Maturities of Available-for-Sale and Held-to-Maturity Securities (Details) $ in Thousands	Sep. 30, 2024 USD ($)
Available-for-sale, Amortized Cost
Within 1 year	$ 313,109
After 1 year through 5 years	214,783
Total	527,892
Available-for-sale, Estimated Fair Value
Within 1 year	313,909
After 1 year through 5 years	217,437
Total	531,346
Held-to-maturity, Amortized Cost
Within 1 year	145
Total	145
Held-to-maturity, Estimated Fair Value
Within 1 year	145
Total	$ 145

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