Segment Reporting (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Depreciation expense	$ 4,200	$ 4,600	$ 4,900
Total other underwriting and operating expenses net	209,324	226,004	236,697
Mortgage Insurance Segment
Segment Reporting Information [Line Items]
Employee costs	157,937	176,682	170,914
Outside services	32,667	36,099	55,612
Premium taxes	21,547	21,523	21,469
Depreciation expense	4,179	4,626	4,938
All other underwriting and operating	(7,006)	(12,926)	(16,236)
Total other underwriting and operating expenses net	$ 209,324	$ 226,004	$ 236,697