(9) Fair Value Measurements (Details - Delinquency status) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Finance receivables measured at fair value current	$ 1,530,301	$ 1,344,883
Finance receivables measured at fair value	1,658,662	1,492,803
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Finance receivables measured at fair value	76,208	81,262
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Finance receivables measured at fair value	27,616	34,280
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Finance receivables measured at fair value	9,159	15,167
Repossessed Vehicles [Member]
Financing Receivable, Past Due [Line Items]
Finance receivables measured at fair value	$ 15,378	$ 17,211