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Investments - Available-for-Sale
9 Months Ended
Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]  
Investments - Available-for-Sale Investments - Available-for-Sale
Investments available-for-sale consisted of the following as of September 30, 2024 and December 31, 2023 (table in thousands):
September 30, 2024
Amortized CostUnrealized GainUnrealized LossAccrued InterestFair Value
Available-for-Sale Securities
Debt securities$5,921 $13 $— $— $5,934 

December 31, 2023
Amortized CostUnrealized GainUnrealized LossAccrued InterestFair Value
Available-for-Sale Securities
Debt securities$1,948 $$— $— $1,952 
The fair value of investments available-for-sale are determined using quoted market prices from daily exchange-traded markets based on the closing price as of the balance sheet date and are classified as a Level 1 measurement under ASC 820, Fair Value Measurements.
During the nine months ended September 30, 2024, the Company sold the investments outstanding as of December 31, 2023 for a realized gain of $0.1 million, which is included in realized gain on available-for-sale investments on the condensed consolidated statements of operations.
As of September 30, 2024, the Company's remaining available-for-sale securities are all due within one year.