XML 41 R30.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Note D - Marketable Equity Securities - Unrealized Gains and Losses on Marketable Equity Securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Gross unrealized gains $ 18,098 $ 15,539
Gross unrealized losses 2,603 2,630
Unrealized gain $ 15,495 $ 12,909