CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Statement of Financial Position [Abstract]
Amortized cost	$ 554,775	$ 558,544
Common stock, par value (in usd per share)	$ 1	$ 1
Treasury stock (in shares)	352,161	352,161
Common stock, shares outstanding (in shares)	30,424,694	30,223,311
Common Stock, Shares, Issued, Not Disclosed	true
Number Of Authorized Shares, Not Disclosed	true