Fair Value Measurements, Cash Equivalents and Marketable Securities - Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financial Assets:
Cash equivalents	$ 1,001,067	$ 1,032,500
Short-term marketable equity securities	52,463
Short-term marketable debt securities		35,097
Long-term marketable equity securities		98,002
Total financial assets	1,053,530	1,165,599
Financial Liabilities:
Contingent consideration	6,960	6,540
Total financial liabilities	6,960	6,540
Level 1
Financial Assets:
Cash equivalents	15,061	1,032,500
Short-term marketable equity securities	52,463
Short-term marketable debt securities		0
Long-term marketable equity securities		98,002
Total financial assets	67,524	1,130,502
Financial Liabilities:
Contingent consideration	0	0
Total financial liabilities	0	0
Level 2
Financial Assets:
Cash equivalents	986,006	0
Short-term marketable equity securities	0
Short-term marketable debt securities		35,097
Long-term marketable equity securities		0
Total financial assets	986,006	35,097
Financial Liabilities:
Contingent consideration	0	0
Total financial liabilities	0	0
Level 3
Financial Assets:
Cash equivalents	0	0
Short-term marketable equity securities	0
Short-term marketable debt securities		0
Long-term marketable equity securities		0
Total financial assets	0	0
Financial Liabilities:
Contingent consideration	6,960	6,540
Total financial liabilities	6,960	6,540
U.S. government debt securities
Financial Assets:
Short-term marketable debt securities		35,097
U.S. government debt securities \| Level 1
Financial Assets:
Short-term marketable debt securities		0
U.S. government debt securities \| Level 2
Financial Assets:
Short-term marketable debt securities		35,097
U.S. government debt securities \| Level 3
Financial Assets:
Short-term marketable debt securities		0
Money market funds
Financial Assets:
Cash equivalents	15,061	1,032,500
Money market funds \| Level 1
Financial Assets:
Cash equivalents	15,061	1,032,500
Money market funds \| Level 2
Financial Assets:
Cash equivalents	0	0
Money market funds \| Level 3
Financial Assets:
Cash equivalents	0	$ 0
Fixed income bond funds
Financial Assets:
Cash equivalents	101,115
Fixed income bond funds \| Level 1
Financial Assets:
Cash equivalents	0
Fixed income bond funds \| Level 2
Financial Assets:
Cash equivalents	101,115
Fixed income bond funds \| Level 3
Financial Assets:
Cash equivalents	0
U.S. government debt securities
Financial Assets:
Cash equivalents	884,891
U.S. government debt securities \| Level 1
Financial Assets:
Cash equivalents	0
U.S. government debt securities \| Level 2
Financial Assets:
Cash equivalents	884,891
U.S. government debt securities \| Level 3
Financial Assets:
Cash equivalents	$ 0

Fair value portion of asset recognized for present right to economic benefit.

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