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Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Summary of Contractual Delinquencies of Loans that were Modified to Borrowers Experiencing Financial Difficulty (Parenthetical) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Modified finance receivables charged off | $ 61,709 | $ 49,193
Small Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Modified finance receivables charged off | 25,868 | 17,188
Small Loans [Member] | Contractual Delinquencies of Loans that were Modified to Borrowers [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Modified finance receivables charged off | 400 | 300
Large Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Modified finance receivables charged off | 35,755 | 31,711
Large Loans [Member] | Contractual Delinquencies of Loans that were Modified to Borrowers [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Modified finance receivables charged off | $ 1,800 | $ 1,200

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