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1. Nature of Operations (Details Narrative) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Jun. 30, 2016
Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Accumulated deficit $ (121,081) $ (120,980)    
Working capital 4,000      
Cash 3,398 $ 3,381 $ 529 $ 462
Commitments for capital expenditures $ 22