Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Consolidated Statements of Financial Condition
Debt securities held to maturity, fair value	$ 193,182	$ 198,147
Preferred stock, no par value	$ 0	$ 0
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Common stock, par or stated value per share	$ 1.00	$ 1.00
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	5,151,279	5,151,279
Common stock, shares outstanding	5,000,518	4,991,129
Treasury stock, shares outstanding	150,761	160,150