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CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Statement of Financial Position [Abstract]    
Available-for-sale securities, amortized cost $ 1,599,894 $ 1,293,239
Equity securities, amortized cost $ 929 $ 915
Common Stock, par value (in dollars per share) $ 0.10 $ 0.10
Common Stock, authorized (in shares) 25,000,000 25,000,000
Common Stock, issued (in shares) 14,964,389 15,014,499
Treasury stock, shares (in shares) 124,849 123,956