Quarterly report pursuant to Section 13 or 15(d)

Stockholder's Equity (Details Narrative)

v3.8.0.1
Stockholder's Equity (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 27, 2018
Mar. 12, 2018
Feb. 21, 2018
Feb. 16, 2018
Mar. 31, 2018
Mar. 31, 2017
Feb. 12, 2018
Net proceeds         $ 16,100  
Number of shares issued upon services 15,000            
Value of shares issued upon services $ 69            
Number of options exercised         896    
Unamortized stock compensation for stock options         $ 2,392    
Unamortized stock compensation for stock options period         1 year 2 months 12 days    
Number of outstanding options to purchase         657,305    
Weighted-average exercise price (in dollars per share)         $ 4.31    
Reserved for future issuance under the Equity Plan         745,788    
2016 Equity Incentive Plan [Member]              
Number of common stock available for issuance         2,641,250    
Percentage of increase in shares annually         6.00%    
Option expected life         5 years 8 months 12 days    
Option volatility         6704.00%    
Option risk-free rate         2.63%    
Option dividend rate         0.00%    
Consultant [Member]              
Number of shares issued     394        
Number of options exercised     896        
Amendment To Registration Rights Agreement And Certificate Of Designation [Member] | Series A Convertible Preferred Stock [Member] | 10% Warrant [Member]              
Number of warrants purchased       1,095,682      
Warrant term (in years)       5 years      
Expected life       5 years      
Volatility       67.08%      
Risk-free rate       2.63%      
Dividend rate       0.00%      
Initial fair value       $ 3,156      
IPO [Member]              
Number of shares issued       3,500,000      
Share price (in dollars per share)       $ 5.00      
Net proceeds       $ 15,000      
Underwriting discounts and commissions       1,400      
Other offering expenses       $ 1,100      
30 Days Over-Allotment Option [Member] | Amendment To Registration Rights Agreement And Certificate Of Designation [Member] | Series A Convertible Preferred Stock [Member]              
Number of shares issued       525,000      
Share price (in dollars per share)   $ 5.00         $ 5.00
Net proceeds   $ 258          
Underwriting discounts and commissions   $ 22          
Number of additional shares issued   56,000