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Investments (Tables)
 9 Months Ended
Sep. 30, 2025
Investments [Abstract]  
Investments in Marketable Equity Securities Investments in marketable equity securities consist of the following:
  As of
September 30,
2025		December 31,
2024
(in thousands)
Total cost
$256,897 $227,153 
Gross unrealized gains
760,003 627,760 
Gross unrealized losses(18,107)(2,479)
Total Fair Value
$998,793 $852,434 
Gain on Marketable Equity Securities
The net gain on marketable equity securities comprised the following:

Three Months Ended 
 September 30

Nine Months Ended 
 September 30
(in thousands)
2025202420252024
Gain on marketable equity securities, net$84,768 $30,496 $117,026 $154,276 
Less: Net gains in earnings from marketable equity securities sold and donated(25)(5,908)(25)(6,010)
Net unrealized gains in earnings from marketable equity securities still held at the end of the period$84,743 

$24,588 

$117,001 $148,266