9. Fair Value Measurements (Details - Level 3 Fair Value Measurements) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Finance receivables measured at fair value	$ 1,559,697	$ 1,444,038	$ 997,552	$ 821,066
Fair Value [Member]
Finance receivables measured at fair value	1,559,697	1,444,038
Fair Value [Member] | Level 3 [Member]
Finance receivables measured at fair value	$ 1,559,697	$ 1,444,038
Fair Value [Member] | Level 3 [Member] | Discount Rate [Member] | Minimum [Member]
Unobservable Inputs	8.90%	8.90%
Fair Value [Member] | Level 3 [Member] | Discount Rate [Member] | Maximum [Member]
Unobservable Inputs	11.10%	11.10%
Fair Value [Member] | Level 3 [Member] | Cumulative Net Losses [Member] | Minimum [Member]
Unobservable Inputs	15.00%	15.00%
Fair Value [Member] | Level 3 [Member] | Cumulative Net Losses [Member] | Maximum [Member]
Unobservable Inputs	18.40%	16.10%