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Acquisition of Quantum (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Acquisition of Quantum (Details) [Line Items]    
Purchase consideration $ 1,759  
Estimated useful life 4 years  
Business Acquisition [Member]    
Acquisition of Quantum (Details) [Line Items]    
Purchase consideration $ 1,759  
Issuance of shares common stock (in Shares) 458,902  
Estimated fair value $ 109  
Contingent purchase consideration, description ●First milestone event will be met upon the retention of at least four members of the acquired assembled workforce for at least twelve months. The contingent purchase consideration associated with the first milestone event is cash consideration totaling $450 with an estimated acquisition date fair value of $400. This payment was made on December 31, 2020.   ● Second milestone event will be met upon achieving certain product development criteria as outlined in the asset purchase agreement. The contingent purchase consideration associated with this milestone event is: i) cash consideration totaling $475 and; ii) additional consideration, at the Company’s election, of either cash totaling $500 or the issuance of 655,575 shares of common stock. The estimated acquisition date fair value of such amounts are $387 and $123, respectively.   ●Third milestone event will be met upon the successful demonstration of a prototype as outlined in the asset purchase agreement. The contingent purchase consideration associated with this milestone event is: i) cash consideration totaling $475 and; ii) additional consideration, at the Company’s election, of either cash totaling $500 or the issuance of 655,575 shares of common stock. The estimated acquisition date fair value of such amounts are $387 and $123, respectively.  
Common stock, risk-adjusted discount rates 12.50%  
Quantum Fuel Systems, LLC [Member]    
Acquisition of Quantum (Details) [Line Items]    
Deferred cash payment $ 250  
Accrued interest 14  
Estimated fairvalue 229  
Initial estimated fair value $ 1,421  
Discounted utilizing rate 125.00%  
Developed Technology [Member] | Quantum Fuel Systems, LLC [Member]    
Acquisition of Quantum (Details) [Line Items]    
Estimated useful life 4 years  
Selling, General and Administrative Expenses [Member] | Business Acquisition [Member]    
Acquisition of Quantum (Details) [Line Items]    
Acquisition-related costs   $ 48
First Milestone [Member] | Quantum Fuel Systems, LLC [Member]    
Acquisition of Quantum (Details) [Line Items]    
Fair value deferred purchase consideration discounted utilizing a rate 12.50%  
Second and Third Milestone [Member]    
Acquisition of Quantum (Details) [Line Items]    
Fair value deferred purchase consideration discounted utilizing a rate 12.50%