Income Taxes - Sources of Difference and Tax Effects (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statutory federal income tax rate (amount)
Federal income tax expense at statutory rate	$ 26,603	$ 18,872	$ 5,128
Investment income, net	(280)	(314)	(364)
State taxes, net	245	59	218
Nondeductible expenses	1,073	695	400
Tax related to share-based stock compensation	237	156	213
Other, net	(450)	(336)	(50)
Total income tax expense	$ 27,428	$ 19,132	$ 5,545
Tax Jurisdiction of Domicile [Extensible Enumeration]	country:US	country:US	country:US
Statutory federal income tax rate (as a percent)
Federal income tax expense at statutory rate	21.00%	21.00%	21.00%
Investment income, net	(0.20%)	(0.30%)	(1.50%)
State taxes, net	0.20%	0.10%	0.90%
Nondeductible expenses	0.90%	0.70%	1.60%
Tax related to share-based stock compensation	0.20%	0.20%	0.90%
Other, net	(0.40%)	(0.40%)	(0.20%)
Total income tax expense	21.70%	21.30%	22.70%