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Marketable Equity Securities (Details 1) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Marketable Equity Securities (Tables)    
Marketable Equity Securities At Cost $ 1,492 $ 1,704
Cumulative Unrealized Loss On Marketable Equity Securities (539) (397)
Marketable Equity Securities At Fair Value $ 953 $ 1,307