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Significant Customers and Contingencies (Detail Narratives)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Number of major customers     3 3
Accounts receivable $ 1,917   $ 1,917  
Customers One [Member]        
Accounts receivable $ 1,170 $ 1,196 $ 1,170 $ 1,196
Customers One [Member] | Customer Concentration Risk [Member] | Sales [Member]        
Revenue from customers 74.00% 58.00% 74.00% 67.00%
Customers Two [Member]        
Accounts receivable $ 388 $ 0 $ 388 $ 0
Customers Two [Member] | Customer Concentration Risk [Member] | Sales [Member]        
Revenue from customers 12.00% 0.00% 8.00% 0.00%
Customers Three [Member]        
Accounts receivable $ 149 $ 174 $ 149 $ 174
Customers Three [Member] | Customer Concentration Risk [Member] | Sales [Member]        
Revenue from customers 4.00% 8.00% 4.00% 7.00%
BASF [Member]        
Supply Agreement     We currently have exclusive supply agreements with BASF Corporation ("BASF"), our largest customer, that have contingencies outlined which could potentially result in the license of technology and/or the sale of production equipment from the Company to the customer intended to provide capacity sufficient to meet the customer's production needs.  
Equipment sale - original book value of equipment and upgrades 30.00%   30.00%  
Equipment sale - net book value equipment 115.00%   115.00%  
BASF [Member] | Greater than [Member]        
Accelerated debt maturity - principal amount debt $ 10,000   $ 10,000  
BASF [Member] | Less than [Member]        
Earnings trigger under supply agreeement     0  
Cash, cash equivalents and investments trigger under supply agreeement $ 1,000   $ 1,000