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%