Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands		Total	Common Stock	Additional paid-in capital	Retaining Earnings	Accumulated other comprehensive income
Balance, beginning (in shares) at Dec. 31, 2022			25,210,541
Beginning balance at Dec. 31, 2022		$ 740,114	$ 25	$ 207,030	$ 620,555	$ (87,496)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		694			694
Stock based compensation (in shares)			21,012
Stock based compensation		980		980
Dividends on common stock		(4,037)			(4,037)
Change in net unrealized investment gain (loss)	[1]	14,650				14,650
Change in liability for underfunded employee benefit plans	[2]	(607)				(607)
Foreign currency translation adjustment		0
Balance, ending (in shares) at Mar. 31, 2023			25,231,553
Ending balance at Mar. 31, 2023		$ 751,795	$ 25	208,010	617,213	(73,453)
Balance, beginning (in shares) at Dec. 31, 2023		25,269,842	25,269,842
Beginning balance at Dec. 31, 2023		$ 733,745	$ 25	209,986	574,691	(50,957)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		13,502			13,502
Stock based compensation (in shares)			23,314
Stock based compensation		900		900
Dividends on common stock		(4,046)			(4,046)
Change in net unrealized investment gain (loss)	[3]	(6,740)				(6,740)
Change in liability for underfunded employee benefit plans	[4]	(572)				(572)
Foreign currency translation adjustment		$ (23)				(23)
Balance, ending (in shares) at Mar. 31, 2024		25,293,156	25,293,156
Ending balance at Mar. 31, 2024		$ 736,766	$ 25	$ 210,886	$ 584,147	$ (58,292)

[1] The change in net unrealized gain (loss) is net of reclassification adjustments and income taxes.

[2] The change in liability for underfunded employee benefit plans is net of reclassification adjustments and income taxes.

[3] The change in net unrealized gain (loss) is net of reclassification adjustments and income taxes.

[4] The change in liability for underfunded employee benefit plans is net of reclassification adjustments and income taxes.