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Reserve for Losses and Loss Adjustment Expenses - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended		21 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2021
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred claims and claim adjustment expenses				$ 7,496	$ 3,339
Favorable prior year development				(89,645)	(242,041)
Reserve for losses and LAE, for prior years				104,700	136,100
Net reserves acquired during the period				14,513	$ 0
Reduction of reserves on hurricane-related defaults			$ 164,100
Agents National Title
Liability for Claims and Claims Adjustment Expense [Line Items]
Net reserves acquired during the period				14,500
Reinsurance recoverables				$ 100
COVID-19
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve rate	2.00%	4.00%				7.00%

X

- Definition

Liability, as of the balance sheet date, for amounts representing estimated cost of settling unpaid claims for prior years under the terms of the underlying insurance policies, less estimated reinsurance recoveries on such claims. This includes an estimate for claims which have been incurred but not reported. Claim adjustment expenses represent the costs estimated to be incurred in the settlement of unpaid claims.

+ References

No definition available.

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- Definition

Risk In Force, Reserve Percentage

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- Definition

Amount of increase (decrease) in the cost of settling unpaid claims after deduction of reinsurance recoveries related to the acquisition of a business. Includes, but is not limited to, claims which have been incurred but not reported.

+ References

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- Definition

Amount, after effects of reinsurance, of payments to settle claims incurred in prior periods and related claims settlement costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-SubTopic 40
-Topic 944
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-3

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- Definition

Amount, after effects of reinsurance, of increase (decrease) in the liability for unpaid claims and claims adjustment expense.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-3

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- Definition

Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
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-Topic 944
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-Name Accounting Standards Codification
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Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred in prior reporting periods and related claims settlement costs.

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