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MARKETABLE SECURITIES (Tables)
9 Months Ended
Sep. 30, 2024
Cash and Cash Equivalents [Abstract]  
Marketable Securities
The following table summarizes our marketable securities by significant investment categories:
 Cost BasisGross Unrealized LossesGross Unrealized GainsFair Value
September 30, 2024
Marketable debt securities(1)
$76,247 $— $1,086 $77,333 
Marketable equity securities28,159 (4,338)— 23,821 
Total marketable securities $104,406 $(4,338)$1,086 $101,154 
December 31, 2023
Marketable debt securities(1)
$106,791 $— $675 $107,466 
Marketable equity securities28,159 (2,581)— 25,578 
Total marketable securities$134,950 $(2,581)$675 $133,044 
(1)     Marketable debt securities are comprised primarily of U.S. Treasury Bills and Government Agency Bonds.