Interest Income and Interest Expense (Details - Interest expense) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt Instrument [Line Items]
Interest expense	$ 50,056	$ 37,889	$ 138,735	$ 106,354
Securitization Trust Debt [Member]
Debt Instrument [Line Items]
Interest expense	42,998	31,734	116,859	87,258
Warehouse Lines Of Credit [Member]
Debt Instrument [Line Items]
Interest expense	4,000	4,665	14,022	14,521
Residual Interest Financing [Member]
Debt Instrument [Line Items]
Interest expense	2,477	1,050	6,225	3,149
Subordinated Renewable Notes [Member]
Debt Instrument [Line Items]
Interest expense	$ 581	$ 440	$ 1,629	$ 1,426