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Loans Held for Sale - Narrative (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Sep. 30, 2022 USD ($)	Dec. 31, 2024 USD ($) entity	Dec. 31, 2023 USD ($) entity	Dec. 31, 2022 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for sale		$ 204,794	$ 340,317
Carrying value of consumer loans sold	$ 521,800
Investment securities held to maturity		991,937	1,103,170
Proceeds from sale of finance receivables				$ 100,700
Variable Interest Entity, Not Primary Beneficiary
Financing Receivable, Credit Quality Indicator [Line Items]
Investment securities held to maturity		160,000	436,800	$ 400,000
Proceeds from sale of finance receivables		40,200	115,100
Consumer Loan Held For Sale | Personal and Other Installment Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Carrying value of consumer loans sold		$ 202,500	$ 556,700
Number of VIEs sold | entity		2	2
Consumer Loan Held For Sale | Other Installment Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Sale of financing receivable		$ 53,000	$ 154,000
Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for sale		$ 2,800	$ 500

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Amount excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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