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Employee Stock Option Plans - Grant Date Fair Value 2013 Plan (Details) - $ / shares
 12 Months Ended
Dec. 31, 2017
Sep. 01, 2017
Jul. 12, 2017
Jul. 28, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]        
Option – grant date price   $ .77 $ 1.35 $ .72
Options granted   200,000 1,782,428 1,699,000
Expected life years 5 years      
Expected volatility 65.00%      
Risk free interest rate   1.70% 1.00% 0.90%
Weighted average fair value   $ 0.42 $ 0.15 $ 0.5
Grant date fair value   $ 126 $ 41 $ 850