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6. Debt (Details - Debt outstanding) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Warehouse lines of credit $ 136,847 $ 112,408
Residual interest financing 39,106 0
Subordinated renewable notes 17,290 16,566
Total debt outstanding 195,373 130,841
Warehouse Lines Of Credit [Member]    
Warehouse lines of credit $ 38,198 25,629
Interest rate 5.50% over one month Libor (Minimum 6.50%)  
Maturity date February 2021  
Warehouse Lines Of Credit (2) [Member]    
Warehouse lines of credit $ 99,885 77,546
Interest rate 3.00% over one month Libor (Minimum 3.75%)  
Maturity date September 2020  
Warehouse Lines Of Credit (3) [Member]    
Warehouse lines of credit $ 0 11,100
Interest rate 6.75% over a commercial paper rate (Minimum 7.75%)  
Maturity date November 2019  
ResidualInterestFinancing [Member]    
Residual interest financing $ 40,000 0
Interest rate 8.60%  
Maturity date January 2026  
Subordinated Renewable Notes [Member]    
Subordinated renewable notes $ 17,290 $ 16,566
Interest rate Weighted average rate of 8.53% and 7.99% at December 31, 2018 and December 31, 2017, respectively  
Maturity date Weighted average maturity of January 2021 and March 2020 at December 31, 2018 and December 31, 2017, respectively