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Note 18 - Fair Value of Financial Instruments - Securities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Marketable equity securities $ 43,203 $ 41,728
Fair Value, Inputs, Level 1 [Member]    
Marketable equity securities $ 43,203 $ 41,728