Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Available-for-sale, amortized cost	$ 2,239,173,000	$ 1,961,531,000
Available-for-sale securities, allowance for credit losses	0	0
Allowance for mortgage loan losses	286,000	45,000
Allowance for doubtful accounts	1,899,000	1,604,000
Property and equipment, accumulated depreciation	85,555,000	75,866,000
Reinsurance receivables, allowance for credit losses	$ 121,000	$ 103,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	25,522,051	25,378,291
Common stock, shares outstanding (in shares)	25,522,051	25,378,291