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Investments (Details) - USD ($) $ in Thousands	3 Months Ended
Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Investments
Investments - Available-for-sale	$ 155,555		$ 188,317
Available-for-sale investments
Amortized Cost	155,797
Gross Unrealized Gains	151
Gross Unrealized (Losses)	(393)
Estimated Fair Value	155,555
Net unrealized gain (loss) on available-for-sale debt securities	(696)	$ (7)
Corporate bonds
Available-for-sale investments
Amortized Cost	153,453
Gross Unrealized Gains	151
Gross Unrealized (Losses)	(393)
Estimated Fair Value	153,211
Commercial paper
Available-for-sale investments
Amortized Cost	1,494
Estimated Fair Value	1,494
Agency bonds
Available-for-sale investments
Amortized Cost	850
Estimated Fair Value	$ 850