Cash, Cash Equivalents and Investments - Cash, Cash Equivalents, Marketable Securities, and Available-for-Sale Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Restricted Cash and Cash Equivalent Item [Line Items]
Cash	$ 182,231	$ 168,294
Amortized Cost		1,721,546
Gross Unrealized Gains	4,952	12,234
Gross Unrealized Losses	0	(3)
Fair Value		1,733,777
Total, amortized cost	732,021
Total, fair value	736,973
Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Cash	182,231	168,294
Fair Value		1,201,147
Total, fair value	458,921
Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Cash	0	0
Fair Value		27,213
Total, fair value	18,052
Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Cash	0	0
Fair Value		505,417
Total, fair value	260,000
Level 1:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	282,613	1,075,026
Gross Unrealized Gains	4,952	12,192
Gross Unrealized Losses	0	0
Fair Value	287,565	1,087,218
Level 1: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	269,513	1,021,911
Level 1: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	18,052	27,213
Level 1: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	0	38,094
Level 2:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	267,177	478,226
Gross Unrealized Gains	0	42
Gross Unrealized Losses	0	(3)
Fair Value	267,177	478,265
Level 2: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	7,177	10,942
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	260,000	467,323
Money market funds | Level 1:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	269,513	821,711
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	269,513	821,711
Money market funds | Level 1: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	269,513	821,711
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
Marketable securities | Level 1:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	13,100	15,093
Gross Unrealized Gains	4,952	12,120
Gross Unrealized Losses	0	0
Fair Value	18,052	27,213
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	18,052	27,213
Marketable securities | 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
Gross Unrealized Gains		69
Gross Unrealized Losses		0
Fair Value		231,835
U.S. Treasury bills | Level 1: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		200,200
U.S. Treasury bills | Level 1: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		0
U.S. Treasury bills | Level 1: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		31,635
Agency bonds | Level 1:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost		6,456
Gross Unrealized Gains		3
Gross Unrealized Losses		0
Fair Value		6,459
Agency bonds | Level 1: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		0
Agency bonds | Level 1: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		0
Agency bonds | Level 1: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		6,459
Term deposits | Level 2:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost	267,177	385,942
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	267,177	385,942
Term deposits | Level 2: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value	7,177	10,942
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	$ 260,000	375,000
Corporate bonds | Level 2:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost		72,322
Gross Unrealized Gains		42
Gross Unrealized Losses		(3)
Fair Value		72,361
Corporate bonds | Level 2: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		0
Corporate bonds | Level 2: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		0
Corporate bonds | Level 2: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		72,361
Commercial paper | Level 2:
Restricted Cash and Cash Equivalent Item [Line Items]
Amortized Cost		18,462
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Fair Value		18,462
Commercial paper | Level 2: | Cash and Cash Equivalents
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		0
Commercial paper | Level 2: | Marketable Securities
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		0
Commercial paper | Level 2: | Short-Term Investments
Restricted Cash and Cash Equivalent Item [Line Items]
Fair Value		18,462
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