Investments - Short-term Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Marketable Securities [Line Items]
Adjusted Cost	$ 283,791	$ 79,544
Unrealized Gains	194	124
Unrealized Losses	(19)	(1)
Fair Value	283,966	79,667
Schedule of Held-to-Maturity Securities [Line Items]
Adjusted Cost	437,865
Unrealized Gains	605
Unrealized Losses	(130)
Fair Value	438,340
U.S. Treasury bills
Marketable Securities [Line Items]
Adjusted Cost	25,383	60,040
Unrealized Gains	4	120
Unrealized Losses	0	0
Fair Value	25,387	60,160
Corporate bonds
Marketable Securities [Line Items]
Adjusted Cost	150,954	18,058
Unrealized Gains	22	3
Unrealized Losses	(16)	(1)
Fair Value	150,960	18,060
Schedule of Held-to-Maturity Securities [Line Items]
Adjusted Cost	94,447
Unrealized Gains	103
Unrealized Losses	(33)
Fair Value	94,517
Government and government agency
Marketable Securities [Line Items]
Adjusted Cost	107,454	1,446
Unrealized Gains	168	1
Unrealized Losses	(3)	0
Fair Value	107,619	$ 1,447
Schedule of Held-to-Maturity Securities [Line Items]
Adjusted Cost	343,418
Unrealized Gains	502
Unrealized Losses	(97)
Fair Value	$ 343,823