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Investments and Fair Value Measurements - Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Due within one year	$ 254,896
Due after one year through two years	227,559
Cost	482,455	$ 643,067
Due within one year	255,194
Due after one year through two years	227,553
Fair Value	$ 482,747	$ 643,410

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