Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Investment securities:
Held-to-maturity, at fair value	$ 7,105	$ 5,119
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)	18,699,165	17,361,898
Common stock, outstanding (in shares)	18,078,474	16,741,207
Treasury stock (in shares)	620,691	620,691