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12. Employee Benefits (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Employee Benefits Details Narrative      
401(k) plan contributions $ 1,500 $ 1,200 $ 929
Expected long term rate of return 7.25% 7.25%  
Estimated net loss amortized into net periodic benefit cost $ 376