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Significant Customers and Contingencies (Details Narrative)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
Number
Jun. 30, 2019
USD ($)
Number
Dec. 31, 2019
USD ($)
Number of major customers | Number     3 3  
Accounts receivable $ 2,210   $ 2,210   $ 970
Deferred revenue 304   304   $ 482
Customer One [Member]          
Accounts receivable 366 $ 843 366 $ 843  
Customer Two [Member]          
Accounts receivable 811 65 811 65  
Customer Three [Member]          
Accounts receivable $ 479 $ 212 $ 479 $ 212  
Customer Concentration Risk [Member] | Revenue Benchmark [Member]          
Revenue from customers         63.00%
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer One [Member]          
Revenue from customers 32.00% 65.00% 39.00% 59.00%  
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer Two [Member]          
Revenue from customers 26.00% 2.00% 16.00% 6.00%  
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer Three [Member]          
Revenue from customers 13.00% 5.00% 14.00% 12.00%  
BASF [Member]          
Cash requirements levels for safety stock $ 1,000   $ 1,000    
Equipment sale - original book value of equipment and upgrades 115.00%   115.00%    
Equipment sale - net book value equipment 115.00%   115.00%    
BASF [Member] | Greater than [Member]          
Total assets requirement under supply agreeement $ 100,000   $ 100,000    
Cash, cash equivalents and certain investments required under supply agreeement 500   500    
Finished goods inventory levels as safety stock $ 500   $ 500    
Equipment sale - original book value of equipment and upgrades 30.00%   30.00%    
BASF [Member] | Less than [Member]          
Earnings trigger under supply agreeement     $ 0