CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Available for sale debt securities, amortized cost	$ 1,170,105	$ 1,166,340
Available for sale debt securities, allowance for credit losses	$ 0	$ 0
Common stock, par value	$ 0.0625	$ 0.0625
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	17,363,457	17,363,457
Common stock, shares outstanding	17,019,239	17,182,753
Treasury stock, shares	344,218	180,704