CONDENSED CONSOLIDATED STATEMENTS OF CONDITION - UNAUDITED - (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Held-to-maturity debt securities	$ 219,417	$ 220,123
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	44,712,497	44,657,054
Common stock, shares outstanding (in shares)	44,712,497	44,657,054