Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis and Carrying Value (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Dec. 31, 2023
Level 2
Liabilities
Contingent consideration	$ 0	$ 0	$ 0	$ 5,700
Level 3
Liabilities
Contingent consideration	302,100	168,900	$ 183,700	$ 84,600
Carrying Value \| Recurring Basis
Assets
Cash and cash equivalents	334,800	555,000
Marketable securities	1,345,200	878,800
Liabilities
Contingent consideration	302,100	168,900
Fair Value \| Recurring Basis \| Level 1
Assets
Cash and cash equivalents	334,800	555,000
Marketable securities	1,345,200	878,800
Liabilities
Contingent consideration	0	0
Fair Value \| Recurring Basis \| Level 2
Assets
Cash and cash equivalents	0	0
Marketable securities	0	0
Liabilities
Contingent consideration	0	0
Fair Value \| Recurring Basis \| Level 3
Assets
Cash and cash equivalents	0	0
Marketable securities	0	0
Liabilities
Contingent consideration	$ 302,100	$ 168,900