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Investments and Fair Value Measurements - Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Due within one year	$ 702,098
Due after one year through two years	229,706
Cost	931,804	$ 587,368
Due within one year	701,177
Due after one year through two years	229,462
Fair Value	$ 930,639	$ 587,096

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