Variable Interest Entities and Securitizations - Additional Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022 USD ($)	Sep. 30, 2022 USD ($) Facility
Variable Interest Entity [Line Items]
Beneficial interests in securitizations	$ 23,984	$ 23,984
Asset-backed Securities
Variable Interest Entity [Line Items]
Securitization transaction	242,300	$ 523,700
UACC
Variable Interest Entity [Line Items]
Risk retention rules percentage		5.00%
Number of senior secured warehouse credit facilities \| Facility		3
Beneficial interests in securitizations	24,000	$ 24,000
Recognized a gain on sale	16,000	45,600
UACC \| Residual Interest, 2022-1 and 2022-2 Securitization
Variable Interest Entity [Line Items]
Securitization transaction	$ 17,300	$ 49,600

Percentage of risk ceded to reinsurer in excess of risk undertaken originally by insurer that is not ceded to reinsurer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 20
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=99397103&loc=d3e6811-158387

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- Definition

Reflects, by transferred financial asset type, the amount of sales proceeds in excess of or deficient from the sum of the carrying amounts of transferred financial assets plus transaction costs, including those transactions in which the seller/transferor has continuing involvement with the financial assets that have been transferred.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)(3)
-URI https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Accounts Receivable From Securitization Transactions

+ References

No definition available.

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- Definition

Beneficial interests in securitizations.

+ References

No definition available.

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- Definition

Number of senior secured warehouse credit facilities.

+ References

No definition available.

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