Loans and Finance Receivables - Components of Company-owned Loans and Finance Receivables At Fair Value (Detail) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Mar. 31, 2026 |
Dec. 31, 2025 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Dec. 31, 2024 |
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| Accounts Notes And Loans Receivable [Line Items] | |||||||||||
| Principal balance - accrual | $ 4,891,734 | $ 4,374,977 | $ 3,833,394 | ||||||||
| Principal balance - non-accrual | 459,357 | 373,037 | 307,719 | ||||||||
| Total principal balance | 5,351,091 | 4,748,014 | 4,141,113 | ||||||||
| Accrued interest and fees | 173,119 | 154,273 | 157,562 | ||||||||
| Loans and finance receivables at fair value - accrual | 5,887,085 | 5,245,037 | 4,630,465 | ||||||||
| Loans and finance receivables at fair value - non-accrual | 285,679 | 226,507 | 142,850 | ||||||||
| Loans and finance receivables at fair value | 6,172,764 | [1] | $ 5,872,957 | 5,471,544 | [1] | 4,773,315 | [1] | $ 4,569,819 | $ 4,386,444 | ||
| Difference between principal balance and fair value | 821,673 | 723,530 | 632,202 | ||||||||
| Consumer | |||||||||||
| Accounts Notes And Loans Receivable [Line Items] | |||||||||||
| Principal balance - accrual | 1,404,102 | 1,294,991 | 1,229,578 | ||||||||
| Principal balance - non-accrual | 164,246 | 151,947 | 145,487 | ||||||||
| Total principal balance | 1,568,348 | 1,446,938 | 1,375,065 | ||||||||
| Accrued interest and fees | 139,769 | 126,825 | 127,093 | ||||||||
| Loans and finance receivables at fair value - accrual | 1,838,035 | 1,694,851 | 1,599,365 | ||||||||
| Loans and finance receivables at fair value - non-accrual | 78,636 | 69,618 | 68,971 | ||||||||
| Loans and finance receivables at fair value | 1,916,671 | 1,763,552 | 1,764,469 | 1,668,336 | 1,616,337 | 1,639,307 | |||||
| Difference between principal balance and fair value | 348,323 | 317,531 | 293,271 | ||||||||
| Small Business | |||||||||||
| Accounts Notes And Loans Receivable [Line Items] | |||||||||||
| Principal balance - accrual | 3,487,632 | 3,079,986 | 2,603,816 | ||||||||
| Principal balance - non-accrual | 295,111 | 221,090 | 162,232 | ||||||||
| Total principal balance | 3,782,743 | 3,301,076 | 2,766,048 | ||||||||
| Accrued interest and fees | 33,350 | 27,448 | 30,469 | ||||||||
| Loans and finance receivables at fair value - accrual | 4,049,050 | 3,550,186 | 3,031,100 | ||||||||
| Loans and finance receivables at fair value - non-accrual | 207,043 | 156,889 | 73,879 | ||||||||
| Loans and finance receivables at fair value | 4,256,093 | $ 4,109,405 | 3,707,075 | 3,104,979 | $ 2,953,482 | $ 2,747,137 | |||||
| Difference between principal balance and fair value | $ 473,350 | $ 405,999 | $ 338,931 | ||||||||
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