CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Statement Of Financial Position [Abstract]
Securities held to maturity fair value	$ 87,857	$ 108,460
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	500,000	500,000
Preferred stock, liquidation preference per share	$ 1,000	$ 1,000
Common stock, stated value	$ 0.83	$ 0.83
Common stock, shares authorized	42,000,000	42,000,000
Common stock, shares issued	20,973,770	20,656,810
Common stock, shares outstanding	17,920,571	18,393,888
Treasury stock, shares	3,053,199	2,262,922