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5. Interest Income and Interest Expense (Details - Interest expense) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Total interest expense	$ 25,808	$ 23,317	$ 75,057	$ 68,641
Securitization Trust Debt [Member]
Total interest expense	22,678	20,973	66,762	61,589
Warehouse Lines of Credit [Member]
Total interest expense	1,827	1,994	5,850	6,081
Residual interest financing [Member]
Total interest expense	936	0	1,387	0
Subordinated renewable notes [Member]
Total interest expense	$ 367	$ 350	$ 1,058	$ 971

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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