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Investments in Securities
12 Months Ended
Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]  
Investments in Securities
10. Investments in Securities
The cost and fair value of marketable securities are as follows:
December 31, 2023
(in thousands)Amortized CostGross Unrealized
Gains
Gross Unrealized
Losses
Fair Value
U.S. treasury bills$60,801 $131 $— $60,932 
Municipal bonds9,543 148 (404)9,287 
Corporate/government bonds477 29 — 506 
Other bonds478 27 — 505 
$71,299 $335 $(404)$71,230 
December 31, 2022
(in thousands)Amortized CostGross Unrealized
Gains
Gross Unrealized
Losses
Fair Value
U.S. treasury bills$59,764 $319 $— $60,083 
Municipal bonds9,205 40 (838)8,407 
Corporate/government bonds477 — — 477 
Other bonds478 — 481 
$69,924 $362 $(838)$69,448 
The aggregated unrealized losses on available-for-sale debt securities in the amounts of $69 and $476 have been recognized in accumulated other comprehensive loss in the Company’s consolidated balance sheets as of December 31, 2023 and December 31, 2022, respectively.