Cash, Cash Equivalents, and Marketable Securities - Schedule of Amortized Cost, Unrealized Gains and Losses and Estimated Fair Value of the Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 340,485	$ 486,954	$ 416,118
Total cash equivalents	110,088	88,044
Amortized cost	1,240,951	976,964
Unrealized gains	3,535	1,850
Unrealized losses	(109)	(543)
Fair value	1,244,377	978,271
Amortized cost	1,477,685	1,377,739
Fair value	1,481,111	1,379,046
Total cash, cash equivalents, and marketable securities	1,577,533	1,457,837
Cash and cash equivalents:
Cash and Cash Equivalents [Line Items]
Unrealized gains	1	2
Unrealized losses	(7)	(7)
Amortized cost	340,491	486,959
Fair value	340,485	486,954
Debt securities:
Cash and Cash Equivalents [Line Items]
Amortized cost	1,137,194	890,780
Unrealized gains	3,534	1,848
Unrealized losses	(102)	(536)
Fair value	1,140,626	892,092
Cash \| Cash and cash equivalents:
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	230,397	398,910
Total cash equivalents	230,397	398,910
Money market funds
Cash and Cash Equivalents [Line Items]
Total cash equivalents	6,337	1,865
Money market funds \| Cash and cash equivalents:
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	6,337	1,865
Total cash equivalents	6,337	1,865
Commercial paper
Cash and Cash Equivalents [Line Items]
Total cash equivalents	100,985	86,179
Commercial paper \| Cash and cash equivalents:
Cash and Cash Equivalents [Line Items]
Unrealized gains	1	2
Unrealized losses	(7)	(7)
Amortized cost	100,991	86,184
Fair value	100,985	86,179
Corporate bonds
Cash and Cash Equivalents [Line Items]
Total cash equivalents	166
Corporate bonds \| Cash and cash equivalents:
Cash and Cash Equivalents [Line Items]
Unrealized gains	0
Unrealized losses	0
Amortized cost	166
Fair value	166
U.S. agency securities
Cash and Cash Equivalents [Line Items]
Total cash equivalents	0
U.S. agency securities \| Cash and cash equivalents:
Cash and Cash Equivalents [Line Items]
Unrealized gains	0
Unrealized losses	0
Amortized cost	0
Fair value	0
U.S. treasury securities
Cash and Cash Equivalents [Line Items]
Total cash equivalents	2,600
U.S. treasury securities \| Cash and cash equivalents:
Cash and Cash Equivalents [Line Items]
Unrealized gains	0
Unrealized losses	0
Amortized cost	2,600
Fair value	2,600
Commercial paper \| Debt securities:
Cash and Cash Equivalents [Line Items]
Amortized cost	146,921	190,072
Unrealized gains	38	93
Unrealized losses	(8)	(10)
Fair value	146,951	190,155
Corporate bonds \| Debt securities:
Cash and Cash Equivalents [Line Items]
Amortized cost	397,618	228,706
Unrealized gains	1,480	555
Unrealized losses	(50)	(308)
Fair value	399,048	228,953
U.S. agency securities \| Debt securities:
Cash and Cash Equivalents [Line Items]
Amortized cost	88,962	100,793
Unrealized gains	268	285
Unrealized losses	(4)	(18)
Fair value	89,226	101,060
U.S. treasury securities \| Debt securities:
Cash and Cash Equivalents [Line Items]
Amortized cost	503,693	371,209
Unrealized gains	1,748	915
Unrealized losses	(40)	(200)
Fair value	505,401	371,924
Bitcoin exchange traded fund \| Debt securities:
Cash and Cash Equivalents [Line Items]
Bitcoin exchange traded fund	$ 96,422	$ 78,791

Cash, Cash Equivalents, and Marketable Securities - Schedule of Amortized Cost, Unrealized Gains and Losses and Estimated Fair Value of the Cash, Cash Equivalents and Marketable Securities (Details) - USD ($)
$ in Thousands