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11. Segments, Products and Customers (Details Narrative)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Sales Revenue, Net [Member] | Two Customers [Member]        
Concentration percentage 23.00% 22.00% 22.00% 23.00%