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Marketable Securities (Tables)
 12 Months Ended
Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-sale Securities
The following tables show the Company’s available-for-sale securities’ adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category as of December 31, 2023 and 2022, respectively:
2023
Marketable Securities:Adjusted CostUnrealized GainsUnrealized LossesFair Value
Government securities - U.S.$72,990 $954 $— $73,944 
Total$72,990 $954 $— $73,944 
2022
Marketable Securities:Adjusted CostUnrealized GainsUnrealized LossesFair Value
Mutual and money market funds$24,407 $— $(1,889)$22,518 
Total$24,407 $— $(1,889)$22,518 
Investments Classified by Contractual Maturity Date
The following table summarizes the estimated fair value of the Company’s investments in marketable debt securities, accounted for as available-for-sale debt securities and classified by the contractual maturity date of the securities as of December 31, 2023:
Maturities
Marketable Debt Securities:Less than 1 Year1-5 Years5-10 YearsGreater than 10 YearsTotal
Government securities - U.S.$73,944 $— $— $— $73,944 
Total$73,944 $— $— $— $73,944