Cash, Cash Equivalents and Investments - Cash, Cash Equivalents, Marketable Securities, and Available-for-Sale Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Restricted Cash and Cash Equivalent Item [Line Items]
Cash	$ 168,294	$ 94,919
Amortized Cost	1,721,546	878,105
Gross Unrealized Gains	12,234	108,312
Gross Unrealized Losses	(3)	(68)
Fair Value	1,733,777	986,349
Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Cash	168,294	94,919
Fair Value	1,201,147	454,844
Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Cash	0	0
Fair Value	27,213	198,270
Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Cash	0	0
Fair Value	505,417	333,235
Level 1:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	1,075,026	504,295
Gross Unrealized Gains	12,192	108,302
Gross Unrealized Losses	0	(5)
Fair Value	1,087,218	612,592
Level 1: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	1,021,911	322,874
Level 1: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	27,213	198,270
Level 1: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	38,094	91,448
Level 2:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	478,226	278,891
Gross Unrealized Gains	42	10
Gross Unrealized Losses	(3)	(63)
Fair Value	478,265	278,838
Level 2: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	10,942	37,051
Level 2: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	0
Level 2: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	467,323	241,787
Money market funds | Level 1:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	821,711	322,874
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	821,711	322,874
Money market funds | Level 1: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	821,711	322,874
Money market funds | Level 1: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	0
Money market funds | Level 1: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	0
U.S. Treasury bills | Level 1:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	231,766	14,431
Gross Unrealized Gains	69	25
Gross Unrealized Losses	0	0
Fair Value	231,835	14,456
U.S. Treasury bills | Level 1: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	200,200	0
U.S. Treasury bills | Level 1: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	0
U.S. Treasury bills | Level 1: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	31,635	14,456
Marketable securities | Level 1:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	15,093	90,000
Gross Unrealized Gains	12,120	108,270
Gross Unrealized Losses	0	0
Fair Value	27,213	198,270
Marketable securities | Level 1: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	0
Marketable securities | Level 1: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	27,213	198,270
Marketable securities | Level 1: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	0
U.S. Government bonds | Level 1:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost		75,994
Gross Unrealized Gains		7
Gross Unrealized Losses		(5)
Fair Value		75,996
U.S. Government bonds | Level 1: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		0
U.S. Government bonds | Level 1: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		0
U.S. Government bonds | Level 1: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		75,996
Agency bonds | Level 1:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	6,456	996
Gross Unrealized Gains	3	0
Gross Unrealized Losses	0	0
Fair Value	6,459	996
Agency bonds | Level 1: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	0
Agency bonds | Level 1: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	0
Agency bonds | Level 1: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	6,459	996
Term deposits | Level 2:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	385,942	136,480
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	385,942	136,480
Term deposits | Level 2: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	10,942	11,480
Term deposits | Level 2: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	0
Term deposits | Level 2: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	375,000	125,000
Corporate bonds | Level 2:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	72,322	122,018
Gross Unrealized Gains	42	10
Gross Unrealized Losses	(3)	(63)
Fair Value	72,361	121,965
Corporate bonds | Level 2: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	24,075
Corporate bonds | Level 2: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	0
Corporate bonds | Level 2: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	72,361	97,890
Commercial paper | Level 2:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	18,462	20,393
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	18,462	20,393
Commercial paper | Level 2: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	1,496
Commercial paper | Level 2: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	0
Commercial paper | Level 2: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	18,462	$ 18,897
Certificates of deposit | Level 2:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	1,500
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	1,500
Certificates of deposit | Level 2: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0
Certificates of deposit | Level 2: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0
Certificates of deposit | Level 2: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	$ 1,500