Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Consolidated Balance Sheets
Amortized cost	$ 573,733	$ 584,754
Fair Value	249,807	258,617
Allowance for credit losses on investments	$ 207	$ 213
Preferred stock, par value	$ 1	$ 1
Preferred Stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	19,776,786	19,734,077
Common stock, shares outstanding	19,776,786	19,734,077