Finance receivables measured at fair value (Details - Delinquency status) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Financing Receivable, Past Due [Line Items]
Finance receivables	$ 3,941,948	$ 3,778,127
Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Finance receivables	3,485,649	3,220,198
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Finance receivables	217,632	272,421
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Finance receivables	86,227	118,201
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Finance receivables	48,911	56,203
Repossessed Vehicles [Member]
Financing Receivable, Past Due [Line Items]
Finance receivables	$ 103,529	$ 111,104