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Short-term investments
9 Months Ended
Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Short-term investments Short-term investments
Short-term investments consist of U.S. Treasury Bills that have maturities exceeding three months and less than twelve months at the time of purchase and are stated at amortized cost. The Company classifies short-term investments as held-to-maturity based on the Company's intent to hold the short-term investment to maturity. The Company does not hold any short-term investments as of September 30, 2025. The Company's short-term investments are summarized below (in thousands):
December 31, 2024
ExpirationAmortized CostCost BasisAccumulated AccretionFair Value
1/31/2025$4,243 $4,177 $66 $4,243 
2/28/20254,163 4,149 14 4,163 
3/31/20254,202 4,167 35 4,202 
4/15/20254,147 4,128 19 4,147 
Total$16,755 $16,621 $134 $16,755