Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Investment securities:
Held-to-maturity, at fair value	$ 10,162	$ 69,572
Stockholders’ Equity:
Common stock, par value (in dollars per share)	$ 4	$ 4
Common stock, authorized (in shares)	30,000,000	30,000,000
Common stock, issued (in shares)	17,346,086	17,287,882
Treasury stock (in shares)	614,403	614,403