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CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Investment securities:    
Held-to-maturity, allowance for credit Loss $ 0 $ 0
Available-for-sale, allowance for credit Loss $ 0 $ 0
Stockholders' Equity    
Preferred stock, authorized (in shares) 5,000,000 5,000,000
Preferred stock, issued (in shares) 0 0
Common stock, authorized (in shares) 30,000,000 30,000,000
Common stock, issued (in shares) 13,326,509 13,500,453
Common stock, outstanding (in shares) 13,326,509 13,500,453