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Consolidated Statements of Financial Condition (Parenthetical) - $ / shares
Jun. 30, 2022
Dec. 31, 2021
Statement Of Financial Position [Abstract]    
Common stock, par value $ 1 $ 1
Common stock, shares authorized 10,000,000 10,000,000
Common stock, shares issued 6,659,285 6,570,385
Common stock, shares outstanding 6,659,258 6,568,285
Treasury stock, shares 27 2,100