Losses and LAE - Schedule of Provision for Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Effects of Reinsurance [Line Items]
Total provision for losses	$ (7,034)	$ (16,929)
Mortgage insurance
Effects of Reinsurance [Line Items]
Total provision for losses	(6,886)	(16,864)
Title insurance
Effects of Reinsurance [Line Items]
Total provision for losses	$ (148)	$ (65)

Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1

Name:	us-gaap_PolicyholderBenefitsAndClaimsIncurredNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration