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Cash and Cash Equivalents, Restricted Cash and Investments (Tables)
 9 Months Ended
Sep. 30, 2025
Cash, Cash Equivalents, and Short-Term Investments [Abstract]  
Schedule of Cash, Cash Equivalents and Short-term Investments
The fair value of cash and cash equivalents, restricted cash and investments held are as follows:  
 As of September 30, 2025
 Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
 (in thousands)
Cash and cash equivalents$49,656 $— $— $49,656 
Restricted cash29,000 — — 29,000 
Total cash and cash equivalents and restricted cash$78,656 $— $— $78,656 
Securities maturing within one year:    
U.S. treasury securities43,223 24 — 43,247 
Corporate debt securities23,042 9 (4)23,047 
Total short-term investments$66,265 $33 $(4)$66,294 
Total cash and cash equivalents, restricted cash and short-term investments$144,921 $33 $(4)$144,950 
 As of December 31, 2024
 Amortized CostGross Unrealized GainsGross Unrealized LossesEstimated Fair Value
  (in thousands) 
Cash and cash equivalents$66,656 $— $— $66,656 
Restricted cash— — — — 
Total cash and cash equivalents and restricted cash$66,656 $— $— $66,656 
Securities maturing within one year:    
U.S. treasury securities127,884 106 — 127,990 
Corporate debt securities43,299 30 (18)43,311 
Total short-term investments$171,183 $136 $(18)$171,301 
Total cash and cash equivalents, restricted cash and short-term investments$237,839 $136 $(18)$237,957