Finance Receivables (Details - Amortized Cost Basis) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Amortized cost basis	$ 52,080	$ 92,304
Vintage Pool 2014 [Member]
Financing Receivable, Past Due [Line Items]
Amortized cost basis	876	1,865
Vintage Pool 2015 [Member]
Financing Receivable, Past Due [Line Items]
Amortized cost basis	4,019	8,627
Vintage Pool 2016 [Member]
Financing Receivable, Past Due [Line Items]
Amortized cost basis	15,609	28,632
Vintage Pool 2017 [Member]
Financing Receivable, Past Due [Line Items]
Amortized cost basis	$ 31,576	$ 53,180