CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Available-for-sale securities, amortized cost	$ 1,831,791	$ 2,063,790
Securities - held-to-maturity	$ 261,692	$ 282,288
Common Stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common Stock, authorized (in shares)	25,000,000	25,000,000
Common Stock, issued (in shares)	14,555,741	14,696,911
Treasury stock, shares (in shares)	128,749	122,824