Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Investment securities held-to-maturity (fair value $157,924 and $178,402 at March 31, 2022 and December 31, 2021, respectively)	$ 157,924	$ 178,402
Investment securities available-for-sale (amortized cost $372,860 and $319,474, net of allowance for credit losses of $1,275 and $929 at March 31, 2022 and December 31, 2021, respectively)	(1,275)	(929)
Investment securities available-for-sale (amortized cost $372,860 and $319,474, net of allowance for credit losses of $1,275 and $929 at March 31, 2022 and December 31, 2021, respectively)	$ 372,860	$ 319,474
Common stock, par value	$ 5	$ 5
Common stock, shares authorized	48,000,000	48,000,000
Common stock, shares issued	31,556,799	31,556,799
Common stock, shares outstanding	29,636,425	29,500,542
Treasury stock, shares	1,920,374	2,056,257