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4. Debt (Details Narrative) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Warehouse Lines of Credit [Member]    
Credit line maximum borrowing amount $ 100,000  
Credit line expiration date Sep. 30, 2020  
Residual interest financing [Member]    
Unamortized debt issuance costs $ 987 $ 0
Warehouse Lines of Credit [Member]    
Unamortized debt issuance costs $ 1,600 $ 1,900