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Interest Income and Interest Expense (Details - Interest expense) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Debt Instrument [Line Items]    
Total interest expense $ 32,759 $ 16,400
Securitization Trust Debt [Member]    
Debt Instrument [Line Items]    
Total interest expense 26,353 13,528
Warehouse Lines Of Credit [Member]    
Debt Instrument [Line Items]    
Total interest expense 4,848 1,158
Residual interest financing [Member]    
Debt Instrument [Line Items]    
Total interest expense 1,050 1,094
Subordinated renewable notes [Member]    
Debt Instrument [Line Items]    
Total interest expense $ 508 $ 620