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Marketable equity securities with readily determinable market prices consisted of the following as of June 30, 2022 and December 31, 2021: (Details) - Common Stock [Member] - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Net Investment Income [Line Items]    
Payments to Acquire Investments $ 26,063,000 $ 53,475,000
Unrealized Gain (Loss) on Securities 481,000 32,000
Debt and Equity Securities, Gain (Loss) (9,077,000) (13,127,000)
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure $ 17,467,000 $ 40,380,000