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Fair Value Measurements (Details - Level 3 fair value measurements) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023 | Mar. 31, 2024 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022
Fair Value Disclosures [Abstract] |  |  |  |  |  |
Receivables, Fair Value Disclosure | $ 2,960,375 | $ 2,722,662 | $ 2,791,373 | $ 2,618,420 | $ 2,575,117 | $ 2,476,617
Discount Rate on Finance Receivables | 11.39% | 11.35% |  |  |  |
Cumulative Net Losses (Percent) on Finance Receivables | 15.38% | 15.25% |  |  |  |

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