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1. Nature of Operations (Details Narrative) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Mar. 31, 2016
Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Accumulated deficit $ (121,393) $ (120,980)    
Working capital 3,600      
Cash 3,189 $ 3,381 $ 336 $ 462
Commitments for capital expenditures $ 5,000