CONSOLIDATED STATEMENTS OF CONDITION (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Statement of Financial Position [Abstract]
Securities held to maturity, fair value	$ 27,679	$ 6,652	$ 9,451
Allowance for loan losses	$ 18,963	$ 19,033	$ 20,237
Preferred stock, par value (in dollars per share)	$ 2.50	$ 2.50	$ 2.50
Preferred stock, shares authorized	20,000,000	20,000,000	20,000,000
Preferred stock, shares outstanding	0	0	0
Common stock, par value (in dollars per share)	$ 2.50	$ 2.50	$ 2.50
Common stock, shares authorized	20,000,000	20,000,000	20,000,000
Common stock, shares issued	8,823,699	8,795,877	8,777,620
Common stock, shares outstanding	8,707,028	8,679,206	8,715,020
Treasury stock, shares	116,671	116,671	62,600