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Investments
9 Months Ended
Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Investments Investments
Marketable debt securities held by the Company are classified as available-for-sale pursuant to ASC 320, Investments - Debt and Equity Securities, and carried at fair value in the accompanying condensed consolidated balance sheets.
The following table summarizes the gross unrealized gains on the Company’s marketable securities as of September 30, 2025:

September 30, 2025
Gross Unrealized
(In thousands)Amortized CostGainsEstimated Fair Value
U.S. government agency bonds$46,372 $727 $47,099 
Short-term investments$47,099 
As of September 30, 2025, there was $0.7 million of interest receivable related to the outstanding debt securities held by the Company.
The following table summarizes the gross unrealized gains on the Company’s marketable securities as of December 31, 2024:
December 31, 2024
Gross Unrealized
(in thousands)Amortized CostGainsEstimated Fair Value
U.S. government agency bonds$20,686 $135 $20,821 
Short-term investments$20,821 
As of December 31, 2024, there was $0.1 million of interest receivable related to the outstanding debt securities held by the Company.