Marketable Securities - Schedule of Company's investing portfolio (Details) - Marketable securities - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Marketable Securities
COST	$ 770,301	$ 588,365
UNREALIZED GAINS	1,093	1,412
UNREALIZED LOSSES	(21)	(497)
FAIR VALUE	771,373	589,280
Maturities within one year
Marketable Securities
COST	597,742	378,096
UNREALIZED GAINS	912	833
UNREALIZED LOSSES	(11)	(65)
FAIR VALUE	598,643	378,864
Maturities between one and two years
Marketable Securities
COST	172,559	210,269
UNREALIZED GAINS	181	579
UNREALIZED LOSSES	(10)	(432)
FAIR VALUE	172,730	210,416
U.S. Treasury Securities | Maturities within one year
Marketable Securities
COST	221,182	158,332
UNREALIZED GAINS	430	469
UNREALIZED LOSSES	0	(34)
FAIR VALUE	221,612	158,767
U.S. Treasury Securities | Maturities between one and two years
Marketable Securities
COST	128,396	90,330
UNREALIZED GAINS	149	109
UNREALIZED LOSSES	0	(271)
FAIR VALUE	128,545	90,168
Debt securities issued by U.S. government agencies | Maturities within one year
Marketable Securities
COST	127,796	115,425
UNREALIZED GAINS	324	169
UNREALIZED LOSSES	0	0
FAIR VALUE	128,120	115,594
Debt securities issued by U.S. government agencies | Maturities between one and two years
Marketable Securities
COST	14,580	102,707
UNREALIZED GAINS	16	470
UNREALIZED LOSSES	0	(75)
FAIR VALUE	14,596	103,102
Commercial paper | Maturities within one year
Marketable Securities
COST	69,534	35,508
UNREALIZED GAINS	22	49
UNREALIZED LOSSES	0	0
FAIR VALUE	69,556	35,557
Corporate Debt Securities | Maturities within one year
Marketable Securities
COST	179,230	68,831
UNREALIZED GAINS	136	146
UNREALIZED LOSSES	(11)	(31)
FAIR VALUE	179,355	68,946
Corporate Debt Securities | Maturities between one and two years
Marketable Securities
COST	29,583	17,232
UNREALIZED GAINS	16	0
UNREALIZED LOSSES	(10)	(86)
FAIR VALUE	$ 29,589	$ 17,146