Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details Narrative)

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Commitments and Contingencies (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
Jun. 24, 2018
Apr. 19, 2018
Jun. 30, 2018
May 31, 2016
May 18, 2016
Interstate Battery Systems International, Inc. [Member]          
Warrants to purchase shares of common stock       702,247  
Warrants expiration date       Jun. 23, 2020  
Interstate Battery Agreement [Member] | Interstate Battery Systems International, Inc. [Member]          
Commitment paid per occurrence         $ 2,000
Series of Agreements [Member] | Interstate Battery Systems International, Inc. [Member]          
Commitment paid per occurrence $ 2,000        
One-time fee payable $ 500        
Warrants to purchase shares of common stock 702,247        
Pre-modification exercise price of the warrants $ 7.12        
Post-modification exercise price of the warrants $ 3.33        
Johnson Controls Agreement [Member] | Johnson Controls [Member]          
Commitment paid per occurrence     $ 1,000    
Dr. Stephen Clarke [Member] | Employment Agreement [Member]          
Severance benefits   $ 900      
Expense related to stock option awards   $ 15