Losses and LAE - Schedule of Provision for Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Effects of Reinsurance [Line Items]
Total provision for losses	$ (2,514)	$ (42,526)	$ (338,239)
Mortgage insurance
Effects of Reinsurance [Line Items]
Total provision for losses	(2,248)	(42,136)	(339,374)
Title Insurance
Effects of Reinsurance [Line Items]
Total provision for losses	$ (266)	$ (390)	$ 1,135