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Cash and Cash Equivalents, Investments and Fair Value Measurements - Contractual Maturity (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Adjusted Cost
Due within one year	$ 167,830
Due after one year through three years	417,753
Investments not due at a single maturity date	52,404
Adjusted Cost	637,987
Fair Value
Due within one year	166,841
Due after one year through three years	412,541
Investments not due at a single maturity date	52,404
Fair Value	$ 631,786

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