Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details Narrative)

v3.10.0.1
Stockholders' Equity (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 24, 2018
Jun. 18, 2018
May 31, 2018
Apr. 30, 2018
Jan. 31, 2018
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
May 31, 2016
Number of shares issued related public offering   10,085,500                  
Sale of stock issued price per share   $ 2.85                  
Gross proceeds from public offering   $ 28,700                  
Net proceeds from public offering   $ 26,600                  
Proceeds from issuance of stock               $ 28,754 $ 10,630    
Incremental fair value from modification               $ 402    
Dividend yield           0.00% 0.00% 0.00% 0.00%    
General and administrative expense           $ 3,913 $ 1,444 $ 5,688 $ 2,972    
Stock option exercises                  
Expense related to the modification of stock option awards               $ 15      
Award vesting rights description               The options vest in 1/36th increments during each of the first twelve months following the date of grant and thereafter the options vest in one-third increments on the second and third anniversary of the date of grant.      
Options One [Member]                      
Options to purchase shares of common stock               420,000      
Options exercisable term               5 years      
Options exercise price           $ 3.00   $ 3.00      
Options Two [Member]                      
Options to purchase shares of common stock               210,000      
Options exercisable term               5 years      
Options exercise price           5.00   $ 5.00      
Options Three [Member]                      
Options to purchase shares of common stock               210,000      
Options exercisable term               5 years      
Options exercise price           $ 7.00   $ 7.00      
Warrant [Member]                      
Fair value assumptions stock option price per share $ 3.26                    
Expected years 2 years                    
Expected stock volatility 80.20%                    
Discount rate 2.56%                    
Dividend yield 0.00%                    
General and administrative expense           $ 400       $ 600  
Accrued liabilities           600   $ 600      
Offset to additional paid-in capital           $ 1,000          
Minimum [Member]                      
Expected years           2 years 6 months 2 years 6 months 2 years 6 months 2 years 6 months    
Expected stock volatility           79.50% 71.00% 78.40% 70.90%    
Maximum [Member]                      
Expected years           3 years 6 months 3 years 6 months 3 years 6 months 3 years 6 months    
Expected stock volatility           86.30% 72.70% 86.30% 72.70%    
Interstate Battery Systems International, Inc. [Member]                      
Warrants to purchase shares of common stock                     702,247
Interstate Battery Systems International, Inc. [Member] | Series of Agreements [Member]                      
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                    
Pre-modification warrant expiration date Jun. 24, 2018                    
Post-modification warrant expiration date Jun. 23, 2020                    
Incremental fair value from modification $ 1,000                    
Stephen Cotton [Member] | Maximum [Member]                      
Options to purchase shares of common stock     840,000                
Officers and Directors Purchase Plan [Member]                      
Number of shares issued               2,034      
Proceeds from issuance of stock               $ 4      
Restricted Stock Units (RSUs) [Member]                      
Number of shares issued               65,600      
Restricted Stock Units (RSUs) [Member] | April 12, 2019 [Member]                      
Restricted stock units vest       50,000              
Restricted Stock Units (RSUs) [Member] | Thereafter [Member]                      
Restricted stock units vest       4,167              
Restricted Stock Units (RSUs) [Member] | Chief Financial Officer [Member]                      
Restricted stock shares granted       150,000              
Restricted stock shares granted, value       $ 339              
Award vesting rights description       If at any time prior to April 12, 2019 Mr. Knuettel II is terminated without Cause or for Good Reason, then the 50,000 RSUs that would otherwise vest on April 12, 2019 shall vest immediately and be included as severance.              
Over-Allotment Option [Member]                      
Number of shares issued related public offering         1,072,500            
Net proceeds from public offering         $ 2,100