Schedule V-Valuation and Qualifying Accounts (Details) - Allowance for Uncollectible Reinsurance - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Valuation allowances and qualifying accounts
Balance at beginning of period	$ 26,974	$ 27,323	$ 27,243
Amounts charged to expense	(21)	(50)	130
Amounts recovered (written off)	(177)	(299)	(50)
Balance at end of period	$ 26,776	$ 26,974	$ 27,323