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Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Amortized Cost Basis in Past-Due Loans (Detail) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024
--- | --- | --- | ---
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 1,890,351 | $ 1,892,535 | $ 1,744,286
Net finance receivables in nonaccrual status | $ 83,303 | $ 88,830 |
Total net finance receivables | 100.00% | 100.00% |
Net finance receivables in nonaccrual status | 4.40% | 4.70% |
Large Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 1,345,825 | $ 1,336,780 | 1,250,647
Net finance receivables in nonaccrual status | $ 50,071 | $ 54,228 |
Total net finance receivables | 100.00% | 100.00% |
Net finance receivables in nonaccrual status | 3.70% | 4.10% |
Small Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 543,824 | $ 554,686 | 490,830
Net finance receivables in nonaccrual status | $ 33,133 | $ 34,465 |
Total net finance receivables | 100.00% | 100.00% |
Net finance receivables in nonaccrual status | 6.10% | 6.20% |
Retail Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 702 | $ 1,069 | $ 2,809
Net finance receivables in nonaccrual status | $ 99 | $ 137 |
Total net finance receivables | 100.00% | 100.00% |
Net finance receivables in nonaccrual status | 14.10% | 12.80% |
Financing Receivables, Current [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 1,624,072 | $ 1,590,381 |
Current,Percent | 85.90% | 84.00% |
Financing Receivables, Current [Member] | Large Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 1,174,392 | $ 1,139,070 |
Current,Percent | 87.30% | 85.20% |
Financing Receivables, Current [Member] | Small Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 449,200 | $ 450,603 |
Current,Percent | 82.60% | 81.20% |
Financing Receivables, Current [Member] | Retail Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 480 | $ 708 |
Current,Percent | 68.40% | 66.20% |
1 to 29 Days Past Due [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 132,302 | $ 156,312 |
Past due, Percent | 7.00% | 8.30% |
1 to 29 Days Past Due [Member] | Large Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 92,032 | $ 109,656 |
Past due, Percent | 6.80% | 8.20% |
1 to 29 Days Past Due [Member] | Small Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 40,180 | $ 46,488 |
Past due, Percent | 7.40% | 8.40% |
1 to 29 Days Past Due [Member] | Retail Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 90 | $ 168 |
Past due, Percent | 12.80% | 15.70% |
Delinquent Accounts 30 to 59 Days [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 32,790 | $ 36,948 |
Past due, Percent | 1.80% | 1.90% |
Delinquent Accounts 30 to 59 Days [Member] | Large Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 20,036 | $ 22,909 |
Past due, Percent | 1.40% | 1.70% |
Delinquent Accounts 30 to 59 Days [Member] | Small Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 12,725 | $ 13,998 |
Past due, Percent | 2.30% | 2.50% |
Delinquent Accounts 30 to 59 Days [Member] | Retail Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 29 | $ 41 |
Past due, Percent | 4.10% | 3.90% |
Delinquent Accounts 60 to 89 Days [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 28,778 | $ 35,242 |
Past due, Percent | 1.50% | 1.90% |
Delinquent Accounts 60 to 89 Days [Member] | Large Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 16,878 | $ 21,493 |
Past due, Percent | 1.30% | 1.60% |
Delinquent Accounts 60 to 89 Days [Member] | Small Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 11,869 | $ 13,699 |
Past due, Percent | 2.20% | 2.50% |
Delinquent Accounts 60 to 89 Days [Member] | Retail Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 31 | $ 50 |
Past due, Percent | 4.40% | 4.70% |
Delinquent Accounts 90 to 119 Days [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 24,204 | $ 28,085 |
Past due, Percent | 1.30% | 1.50% |
Delinquent Accounts 90 to 119 Days [Member] | Large Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 14,086 | $ 16,609 |
Past due, Percent | 1.10% | 1.30% |
Delinquent Accounts 90 to 119 Days [Member] | Small Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 10,102 | $ 11,443 |
Past due, Percent | 1.90% | 2.10% |
Delinquent Accounts 90 to 119 Days [Member] | Retail Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 16 | $ 33 |
Past due, Percent | 2.30% | 3.10% |
Delinquent Accounts 120 to 149 Days [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 22,866 | $ 23,987 |
Past due, Percent | 1.20% | 1.30% |
Delinquent Accounts 120 to 149 Days [Member] | Large Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 13,642 | $ 14,357 |
Past due, Percent | 1.00% | 1.10% |
Delinquent Accounts 120 to 149 Days [Member] | Small Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 9,201 | $ 9,602 |
Past due, Percent | 1.70% | 1.70% |
Delinquent Accounts 120 to 149 Days [Member] | Retail Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 23 | $ 28 |
Past due, Percent | 3.30% | 2.60% |
Delinquent Accounts 150 to 179 Days [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 25,339 | $ 21,580 |
Past due, Percent | 1.30% | 1.10% |
Delinquent Accounts 150 to 179 Days [Member] | Large Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 14,759 | $ 12,686 |
Past due, Percent | 1.10% | 0.90% |
Delinquent Accounts 150 to 179 Days [Member] | Small Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 10,547 | $ 8,853 |
Past due, Percent | 1.90% | 1.60% |
Delinquent Accounts 150 to 179 Days [Member] | Retail Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 33 | $ 41 |
Past due, Percent | 4.70% | 3.80% |
Total Delinquency Accounts [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 133,977 | $ 145,842 |
Past due, Percent | 7.10% | 7.70% |
Total Delinquency Accounts [Member] | Large Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 79,401 | $ 88,054 |
Past due, Percent | 5.90% | 6.60% |
Total Delinquency Accounts [Member] | Small Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 54,444 | $ 57,595 |
Past due, Percent | 10.00% | 10.40% |
Total Delinquency Accounts [Member] | Retail Loans [Member] |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |
Total | $ 132 | $ 193 |
Past due, Percent | 18.80% | 18.10% |

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