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Significant Customers and Contingencies (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Accounts receivable $ 2,932 $ 970  
Finished goods inventory $ 1,545 1,170  
BASF [Member]      
Equipment sale - original book value of equipment and upgrades 30.00%    
Equipment sale - net book value equipment 115.00%    
BASF [Member] | Less than [Member]      
Cash, cash equivalents and investments trigger under supply agreeement $ 500    
BASF [Member] | Greater than [Member]      
Cash, cash equivalents and investments trigger under supply agreeement     $ 1,000
Accelerated debt maturity - principal amount debt 10,000    
Finished goods inventory     $ 500
Customer One [Member]      
Accounts receivable 381 449  
Customer Two [Member]      
Accounts receivable 735 230  
Customer Three [Member]      
Accounts receivable 342 25  
Customer Four [Member]      
Accounts receivable $ 116 $ 16  
Customer Concentration Risk [Member] | Revenue Benchmark [Member]      
Revenue from customers 30.00% 63.00%  
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer One [Member]      
Revenue from customers 30.00% 63.00%  
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer Two [Member]      
Revenue from customers 20.00% 7.00%  
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer Three [Member]      
Revenue from customers 14.00% 0.00%  
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer Four [Member]      
Revenue from customers 11.00% 8.00%