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CONDENSED CONSOLIDATED STATEMENTS OF CONDITION - UNAUDITED - (Parenthetical) - $ / shares
Sep. 30, 2020
Dec. 31, 2019
Statement of Financial Position [Abstract]    
Common stock, par value (in dollars per share) $ 1.00 $ 1.00
Common stock, shares authorized (in shares) 100,000,000 100,000,000
Common stock, shares issued (in shares) 47,025,779 34,970,370
Common stock, shares outstanding (in shares) 47,025,779 34,970,370