Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Available-for-sale, amortized cost	$ 1,683,486	$ 1,771,041
Equity securities, cost	0	29,238
Allowance for doubtful accounts	1,942	1,794
Property and equipment accumulated depreciation	70,615	68,242
Reinsurance receivables and recoverables, allowance for credit losses	$ 102	$ 97
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 outstanding (in shares)	25,293,156	25,269,842
Common stock, shares issued (in shares)	25,293,156	25,269,842