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Cash and Cash Equivalents, Restricted Cash and Investments - Schedule of Cash and Cash Equivalents and Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Fair Value
Estimated Fair Value	$ 66,294	$ 171,301
Total cash and cash equivalents, restricted cash and short-term investments
Fair Value
Amortized Cost	144,921	237,839
Gross Unrealized Gains	33	136
Gross Unrealized Losses	(4)	(18)
Estimated Fair Value	144,950	237,957
Cash and Restricted Cash
Fair Value
Amortized Cost	78,656	66,656
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	78,656	66,656
Cash and cash equivalents
Fair Value
Amortized Cost	49,656	66,656
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	49,656	66,656
Restricted Cash
Fair Value
Amortized Cost	29,000	0
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	29,000	0
Total short-term investments
Fair Value
Amortized Cost	66,265	171,183
Gross Unrealized Gains	33	136
Gross Unrealized Losses	(4)	(18)
Estimated Fair Value	66,294	171,301
U.S. treasury securities
Fair Value
Amortized Cost	43,223	127,884
Gross Unrealized Gains	24	106
Gross Unrealized Losses	0	0
Estimated Fair Value	43,247	127,990
Corporate debt securities
Fair Value
Amortized Cost	23,042	43,299
Gross Unrealized Gains	9	30
Gross Unrealized Losses	(4)	(18)
Estimated Fair Value	$ 23,047	$ 43,311

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