Note 6 - Fair Values of Assets and Liabilities - Reconciliation of Level 3 Assets (Details) - USD ($) $ in Thousands |
6 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Balance | $ 6,647,882 | $ 2,630,274 | ||||||||
| Total Changes in fair value of loans | [1] | 18,500 | (0) | |||||||
| Change in Contingent consideration and other purchase price adjustments (3) | [1] | (18,500) | 0 | |||||||
| Purchases | 3,063,869 | 1,562,566 | ||||||||
| Finance and fees, added to the account balance | 1,190,224 | 594,944 | ||||||||
| Settlements | (3,462,923) | (1,387,938) | ||||||||
| Balance | [2] | 6,658,748 | 3,004,724 | |||||||
| Aggregate unpaid gross balance of loans carried at fair value | 6,891,217 | 3,046,477 | ||||||||
| Change in unrealized losses for the period included in earnings (or changes in net assets) for assets held at the end of the period | 77,908 | 50,134 | ||||||||
| Loans, Assets [Member] | ||||||||||
| Changes in fair value of loans at fair value, included in earnings | 77,908 | 50,134 | ||||||||
| Changes in fair value due to current period principal charge-offs, net of recoveries | [3] | (593,588) | (307,029) | |||||||
| Changes in fair value due to current period finance and fee charge-offs | [3] | (246,124) | (138,227) | |||||||
| Total Changes in fair value of loans | [4] | (761,804) | (395,122) | |||||||
| Change in Contingent consideration and other purchase price adjustments (3) | [4] | $ 761,804 | $ 395,122 | |||||||
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