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Investments - Available-for-Sale
12 Months Ended
Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]  
Investments - Available-for-Sale Investments - Available-for-Sale
Investments available-for-sale consisted of the following as of December 31, 2023 and 2022 (tables in thousands):
December 31, 2023
Amortized CostUnrealized GainUnrealized LossAccrued Interest IncomeFair Value
Available-for-Sale Securities
Bonds$1,948 $$— $— $1,952 
December 31, 2022
Amortized CostUnrealized GainUnrealized LossAccrued Interest IncomeFair Value
Available-for-Sale Securities
Bonds$11,315 $75 $— $— $11,390 

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.
As of December 31, 2023 and 2022, our available-for-sale securities were due in one year or less.