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Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Summary of Net Finance Receivables Modified And Classified As TDRs (Detail) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 USD ($) Loan
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | Loan | 1,529 |
TDR Net Finance Receivables | $ | $ 5,512 | [1]
Small Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | Loan | 766 |
TDR Net Finance Receivables | $ | $ 1,464 | [1]
Large Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | Loan | 760 |
TDR Net Finance Receivables | $ | $ 4,043 | [1]
Retail Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of Loans | Loan | 3 |
TDR Net Finance Receivables | $ | $ 5 | [1]
[1] | Represents the post-modification net finance receivables balance of loans that have been modified during the period and resulted in a TDR.

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 + Details
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- Definition Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524 + Details
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