Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Investment securities:
Held-to-maturity, at fair value	$ 2,282	$ 2,286
Available-for-sale, amotized cost	$ 1,342,603	$ 1,363,721
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)	24,541,500	24,479,708
Common stock, outstanding (in shares)	23,888,929	23,827,137
Treasury stock (in shares)	652,571	652,571