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1. Nature of Activities and Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Accounting Policies [Abstract]    
Amortization expense related to patents $ 80 $ 80
2017 80  
2018 108  
2019 198  
2020 108  
2021 108  
Thereafter 698  
Warrants $ 18,644 $ 18,644