(9) Fair Value Measurements (Details - Delinquency status) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Initial Principal [Default Label]	$ 2,133,969	$ 1,972,699
Financial Asset, Not Past Due [Member]
Financing Receivable, Past Due [Line Items]
Initial Principal [Default Label]	1,971,766	1,787,641
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Initial Principal [Default Label]	92,440	115,924
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Initial Principal [Default Label]	35,714	38,999
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Initial Principal [Default Label]	11,248	11,564
Repossessed Vehicles [Member]
Financing Receivable, Past Due [Line Items]
Initial Principal [Default Label]	$ 22,801	$ 18,571