Liability for Unpaid Losses and Loss Adjustment Expenses - Change in Liability for Unpaid Losses and LAE (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Balance at beginning of period	$ 663,019	$ 186,349	$ 1,038,790	$ 346,216
Less: Reinsurance recoverable	(495,250)	(18,972)	(798,680)	(115,860)
Net balance at beginning of period	167,769	167,377	240,110	230,356
Incurred related to current year	270,266	327,729	683,004	708,774
Incurred related to prior years	17,706	2,715	34,849	7,080
Total incurred	287,972	330,444	717,853	715,854
Paid related to current year	178,384	216,735	369,425	453,350
Paid related to prior years	(16,963)
Paid related to prior years		57,227	294,218	269,001
Total paid	161,421	273,962	663,643	722,351
Net balance at end of period	294,320	223,859	294,320	223,859
Plus: Reinsurance recoverable	256,687	929,768	256,687	929,768
Balance at end of period	$ 551,007	$ 1,153,627	$ 551,007	$ 1,153,627

The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.

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Amount, after effects of reinsurance, of payments to settle claims incurred in the current period and related claims settlement costs.

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

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Amount, after effects of reinsurance, of expense (reversal of expense) for claims incurred and costs incurred in the claim settlement process.

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Liability as of the balance sheet date for amounts representing estimated cost of settling unpaid claims 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.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount, after effects of reinsurance, of payments to settle insured claims and pay costs incurred in the claims settlement process.

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Amount, after valuation allowance, recoverable under reinsurance contracts for losses reported to the ceding insurer but not yet paid and amounts expected for incurred losses and settlement expenses, which have not yet been reported to the ceding insurer.

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Amount, after effects of reinsurance, of expense for claims incurred in the current reporting period and related claims settlement costs.

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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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Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years, Net of Commutation Received

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