Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity (Details Narrative)

v3.19.1
Shareholders' Equity (Details Narrative)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 05, 2019
shares
Feb. 13, 2019
USD ($)
$ / shares
shares
Jul. 03, 2018
USD ($)
$ / shares
shares
Jul. 02, 2018
USD ($)
$ / shares
shares
Jun. 06, 2018
USD ($)
$ / shares
shares
Mar. 27, 2018
USD ($)
shares
Mar. 12, 2018
USD ($)
$ / shares
shares
Feb. 16, 2018
USD ($)
$ / shares
shares
Mar. 31, 2019
USD ($)
$ / shares
shares
Mar. 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
$ / shares
Feb. 06, 2019
$ / shares
shares
Jan. 02, 2019
$ / shares
shares
Oct. 06, 2018
$ / shares
shares
Oct. 02, 2018
$ / shares
shares
Net proceeds                 $ 17,500          
Number of shares issued upon services | shares           15,000                  
Value of shares issued upon services           $ 69                  
General and administrative expense                 $ 2,797 $ 2,133          
Restricted Stock Units (RSUs) [Member]                              
Number of shares issued | shares 165,000               241,112            
General and administrative expense                 $ 63            
Chief Executive Officer [Member] | Restricted Stock Units (RSUs) [Member]                              
Number of shares issued | shares 10,313                            
Warrant [Member]                              
Warrant exericse price (in dollars per share) | $ / shares                 $ 5.28   $ 5.24        
Consultant Agreement [Member] | Warrant [Member]                              
Number of warrants purchased | shares       100,000                 25,000   25,000
Warrant exericse price (in dollars per share) | $ / shares                         $ 10.00   $ 8.75
Expected life                         24 months   18 months
Expensed using the straight-line method       $ 146             $ 126        
General and administrative expense                 $ 31            
Consultant Agreement [Member] | Warrant [Member] | Expected Term [Member] | Minimum [Member]                              
Expected life       1 year                      
Consultant Agreement [Member] | Warrant [Member] | Expected Term [Member] | Maximum [Member]                              
Expected life       2 years                      
Consultant Agreement [Member] | Warrant [Member] | Risk Free Interest Rate [Member] | Minimum [Member]                              
Warrants, measurement input       2.34                      
Consultant Agreement [Member] | Warrant [Member] | Risk Free Interest Rate [Member] | Maximum [Member]                              
Warrants, measurement input       2.66                      
Consultant Agreement [Member] | Warrant [Member] | Volatility [Member] | Minimum [Member]                              
Warrants, measurement input       62.04                      
Consultant Agreement [Member] | Warrant [Member] | Volatility [Member] | Maximum [Member]                              
Warrants, measurement input       65.84                      
Consultant Agreement [Member] | Warrant [Member] | Dividend Rate [Member]                              
Warrants, measurement input       0                      
Consultant Agreement [Member] | Warrant [Member] | Consultant [Member]                              
Number of warrants purchased | shares         10,000             10,000   10,000  
Warrant exericse price (in dollars per share) | $ / shares         $ 5.25             $ 7.25   $ 6.25  
Warrant term (in years)         5 years                    
Expensed using the straight-line method         $ 95           76        
General and administrative expense                 10            
Consultant Agreement [Member] | Warrant [Member] | Consultant [Member] | Expected Term [Member]                              
Expected life         5 years                    
Consultant Agreement [Member] | Warrant [Member] | Consultant [Member] | Risk Free Interest Rate [Member]                              
Warrants, measurement input         2.51                    
Consultant Agreement [Member] | Warrant [Member] | Consultant [Member] | Volatility [Member]                              
Warrants, measurement input         67.25                    
Consultant Agreement [Member] | Warrant [Member] | Consultant [Member] | Dividend Rate [Member]                              
Warrants, measurement input         0                    
Consultant Agreement [Member] | Warrant [Member] | Consultant [Member] | Volatility Three Months Ended [Member]                              
Number of warrants purchased | shares         30,000                    
Consultant Agreement [Member] | Warrant [Member] | Consultant [Member] | Volatility [Member]                              
Warrants, measurement input         67.28                    
Consultant Agreement [Member] | Warrant [Member] | Consultant [Member] | Volatility [Member]                              
Warrants, measurement input         69.23                    
Consultant Agreement [Member] | Warrant [Member] | Consultant [Member] | Risk Free Interest Rate [Member]                              
Warrants, measurement input         2.81                    
Consultant Agreement [Member] | Warrant [Member] | Consultant [Member] | Risk Free Interest Rate [Member]                              
Warrants, measurement input         3.07                    
Consultant Agreement [Member] | Warrant Issued With 30 Days Of Agreement [Member]                              
Number of warrants purchased | shares       25,000                      
Warrant exericse price (in dollars per share) | $ / shares       $ 7.39                      
Expected life       18 months                      
Consultant Agreement [Member] | Warrant Issued With 30 Days Of Agreement [Member]                              
Number of warrants purchased | shares       25,000                      
Warrant exericse price (in dollars per share) | $ / shares       $ 7.39                      
Expected life       12 months                      
Consultant Agreement [Member] | Warrant Issued With 10 Consecutive Trading Days [Member]                              
Warrant exericse price (in dollars per share) | $ / shares       $ 0.01                      
Consultant Agreement [Member] | Warrant Issued With 10 Consecutive Trading Days [Member] | Minimum [Member]                              
Warrant exericse price (in dollars per share) | $ / shares       9.00                      
Consultant Agreement [Member] | Warrant Issued With 10 Consecutive Trading Days [Member] | Maximum [Member]                              
Warrant exericse price (in dollars per share) | $ / shares       $ 13.00                      
Amendment To Registration Rights Agreement And Certificate Of Designation [Member] | Warrant [Member] | Series A Convertible Preferred Stock [Member]                              
Number of warrants purchased | shares               1,095,682              
Warrant exericse price (in dollars per share) | $ / shares               $ 5              
Warrant term (in years)               5 years              
Initial fair value                 3,156            
Amendment To Registration Rights Agreement And Certificate Of Designation [Member] | Warrant [Member] | Series A Convertible Preferred Stock [Member] | Expected Term [Member]                              
Expected life               5 years              
Amendment To Registration Rights Agreement And Certificate Of Designation [Member] | Warrant [Member] | Series A Convertible Preferred Stock [Member] | Risk Free Interest Rate [Member]                              
Measurement Input               2.63              
Amendment To Registration Rights Agreement And Certificate Of Designation [Member] | Warrant [Member] | Series A Convertible Preferred Stock [Member] | Volatility [Member]                              
Measurement Input               67.08              
Amendment To Registration Rights Agreement And Certificate Of Designation [Member] | Warrant [Member] | Series A Convertible Preferred Stock [Member] | Dividend Rate [Member]                              
Measurement Input               0              
Amendment Consulting Agreement [Member] | Warrant [Member]                              
Number of warrants purchased | shares     90,000                        
Warrant exericse price (in dollars per share) | $ / shares     $ 8.50                        
Number of shares issued upon services | shares     30,000                        
Expected life     5 years                        
Expensed using the straight-line method     $ 594                        
Prepaid expense                 180   $ 317        
General and administrative expense                 137            
Amendment Consulting Agreement [Member] | Warrant [Member] | Expected Term [Member]                              
Expected life     5 years                        
Amendment Consulting Agreement [Member] | Warrant [Member] | Risk Free Interest Rate [Member]                              
Warrants, measurement input     2.72                        
Amendment Consulting Agreement [Member] | Warrant [Member] | Volatility [Member]                              
Warrants, measurement input     68.31                        
Amendment Consulting Agreement [Member] | Warrant [Member] | Dividend Rate [Member]                              
Warrants, measurement input     0                        
Amended and Restated Employment Agreement [Member] | Warrant [Member]                              
Number of warrants purchased | shares   50,000                          
Warrant exericse price (in dollars per share) | $ / shares   $ 5.00                          
Expected life   9 months                          
Expensed using the straight-line method   $ 90                          
Prepaid expense                 60            
General and administrative expense                 30            
Amended and Restated Employment Agreement [Member] | Warrant [Member] | Expected Term [Member]                              
Expected life   3 years                          
Amended and Restated Employment Agreement [Member] | Warrant [Member] | Risk Free Interest Rate [Member]                              
Warrants, measurement input   2.52                          
Amended and Restated Employment Agreement [Member] | Warrant [Member] | Volatility [Member]                              
Warrants, measurement input   67.43                          
Amended and Restated Employment Agreement [Member] | Warrant [Member] | Dividend Rate [Member]                              
Warrants, measurement input   0                          
Amended and Restated Employment Agreement [Member] | Non-Forfeitable Warrant [Member]                              
Number of warrants purchased | shares   30,000                          
Warrant exericse price (in dollars per share) | $ / shares   $ 5.00                          
Number of shares issued upon services | shares   30,000                          
Value of shares issued upon services   $ 30                          
General and administrative expense                 $ 55            
Amended and Restated Employment Agreement [Member] | Non-Forfeitable Warrant [Member] | Expected Term [Member]                              
Expected life   3 years                          
Amended and Restated Employment Agreement [Member] | Non-Forfeitable Warrant [Member] | Risk Free Interest Rate [Member]                              
Warrants, measurement input   2.52                          
Amended and Restated Employment Agreement [Member] | Non-Forfeitable Warrant [Member] | Volatility [Member]                              
Warrants, measurement input   67.43                          
Amended and Restated Employment Agreement [Member] | Non-Forfeitable Warrant [Member] | Dividend Rate [Member]                              
Warrants, measurement input   0                          
IPO [Member]                              
Number of shares issued | shares               3,500,000              
Share price (in dollars per share) | $ / shares               $ 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 | shares               525,000              
Share price (in dollars per share) | $ / shares             $ 5.00                
Net proceeds             $ 258                
Underwriting discounts and commissions             $ 22                
Number of additional shares issued | shares             56,000