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6. Debt (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Warehouse lines of credit $ 103,358 $ 194,056
Residual interest financing 0 9,042
Subordinated renewable notes 14,949 15,138
Total other debt outstanding $ 119,914 220,641
Residual interest financing [Member]    
Interest rate 11.75% over one month Libor  
Maturity date April 2018  
Subordinated renewable notes [Member]    
Interest rate 8.01%  
Interest rate Weighted average rate of 7.50% and 9.04% at December 31, 2016 and 2015, respectively  
Maturity date Weighted average rate of 7.50% and 9.04% at December 31, 2016 and 2015, respectively  
Warehouse lines of credit [Member]    
Warehouse lines of credit $ 64,352 91,504
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 $ 26,445 73,940
Interest rate 5.50% over one month Libor (Minimum 6.25%)  
Maturity date August 2019  
Warehouse lines of credit (3) [Member]    
Warehouse lines of credit $ 14,168 31,017
Interest rate 6.75% over a commercial paper rate (Minimum 7.75%)  
Maturity date November 2019  
Residual interest financing [Member]    
Residual interest financing $ 0 9,042
Subordinated renewable notes [Member]    
Subordinated renewable notes $ 14,949 $ 15,138