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6. Debt (Details - Debt outstanding) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Warehouse lines of credit $ 112,408 $ 103,358
Subordinated renewable notes 16,566 14,949
Total debt outstanding $ 130,841 119,914
Subordinated Renewable Notes [Member]    
Interest rate Weighted average rate of 7.99% and 7.50% at December 31, 2017 and 2016, respectively  
Maturity date Weighted average maturity of March 2020 and January 2019 at December 31, 2017 and 2016, respectively  
Warehouse Lines Of Credit [Member]    
Warehouse lines of credit $ 25,629 64,352
Interest rate 5.50% over one month Libor (Minimum 6.50%)  
Maturity date April 2019  
Warehouse Lines Of Credit (2) [Member]    
Warehouse lines of credit $ 77,546 26,445
Interest rate 5.50% over one month Libor (Minimum 6.25%)  
Maturity date August 2018  
Warehouse Lines Of Credit (3) [Member]    
Warehouse lines of credit $ 11,100 14,168
Interest rate 6.75% over a commercial paper rate (Minimum 7.75%)  
Maturity date November 2019  
Subordinated Renewable Notes [Member]    
Subordinated renewable notes $ 16,566 $ 14,949