Quarterly report pursuant to Section 13 or 15(d)

Convertible Preferred Stock and Stockholders' Equity - Additional Information (Details)

v3.21.1
Convertible Preferred Stock and Stockholders' Equity - Additional Information (Details) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended 15 Months Ended
Nov. 09, 2020
Oct. 20, 2020
Jul. 27, 2020
May 18, 2020
Feb. 28, 2020
Apr. 18, 2019
Jan. 31, 2021
Feb. 29, 2020
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Mar. 31, 2021
Feb. 06, 2020
Class of Stock [Line Items]                          
Temporary Equity, Shares Issued                 250,000   250,000 250,000  
Temporary Equity, Dividend Rate, Percentage                 8.00%   8.00%    
Proceeds from Warrant Exercises                 $ 5,095,000        
Rights upon a subsequent financing given to holder to purchase all, and no less than all, of the securities offered to investors                 250,000     $ 250,000  
Rights upon a subsequent financing given to holder to tender shares of Series A Preferred Stock for the securities offered                 500,000     $ 500,000  
Fair value of warrant             $ 567,000            
Fair Value Adjustment of Warrants                 0 $ (19,000)      
Share Price             $ 3.85            
Stock Issued During Period, Value, Restricted Stock Award, Gross                 $ 0 0      
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures                   $ 0      
Number of restricted shares granted                 352,000 353,000      
Issuance of common stock and warrants, net of offering costs (in shares) 236,375     60,250                  
Warrants to purchase shares of Common Stock           12,756             4,553
Exercise price of warrants $ 2.55                        
Fair value of warrant             $ 567,000            
Aggregate intrinsic value                 $ 1,000 $ 2,000      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights           12,756             4,553
January 2021 [Member]                          
Class of Stock [Line Items]                          
Dividend rate             0.00%            
Volatility rate             60.10%            
Risk free interest rate             0.45%            
Expected term             5 years            
Warrants and Rights Outstanding, Term             5 years            
Warrants to purchase shares of Common Stock                 864,576     864,576  
Warrant term             5 years            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                 864,576     864,576  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights, Cash             305,419   2,342,000        
February 2020 Private Placement [Member]                          
Class of Stock [Line Items]                          
Convertible Preferred Stock, Convertible, Issue of Shares, Threshold Percentage               9.99%          
Dividend rate               0.00%          
Volatility rate               59.00%          
Risk free interest rate               0.89%          
Exercise price               $ 6.00          
Expected term               5 years          
Proceeds from Warrant Exercises               $ 103,000          
Share Price         $ 9.17                
Warrants and Rights Outstanding, Term         5 years                
Number of unit issues , Value         $ 91,062                
Number of shares per unit         1                
Number of warrants per unit         $ 0.50                
Cash fees paid         $ 83,000                
Warrants to purchase shares of Common Stock 45,534       4,553     45,534          
Exercise price of warrants         $ 8.80     $ 9.80          
Warrant term         5 years                
Gross proceeds         $ 835,000                
Warrants, Beneficial Ownership Interest, Percent               4.99%          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 45,534       4,553     45,534          
Warrant [Member] | January 2021 [Member]                          
Class of Stock [Line Items]                          
Proceeds from Warrant Exercises             $ 2,900,000            
Warrants to purchase shares of Common Stock             1,221,675            
Exercise price of warrants             $ 4.20            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights             1,221,675            
Restricted Stock [Member]                          
Class of Stock [Line Items]                          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period                 0        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                 730,869   87,169 730,869  
Number of restricted shares granted                 643,700        
Allocated Share-based Compensation Expense                 $ 2,383,000        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                 2 years 10 months 24 days        
Alexander Capital, LP.                          
Class of Stock [Line Items]                          
Dividend rate               0.00%          
Volatility rate               59.00%          
Risk free interest rate               0.89%          
Exercise price               $ 6.00          
Expected term               5 years          
Proceeds from Warrant Exercises               $ 11,000          
LTSI                          
Class of Stock [Line Items]                          
Share-based Compensation Arrangement by Share-based Payment Award Maximum Percentage of Shares Authorized                     15.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant                 672,180     672,180  
2020 Stock Incentive Plan                          
Class of Stock [Line Items]                          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                 643,974   626,974 643,974  
Number of restricted shares granted                 17,000        
2020 Stock Incentive Plan | Restricted Stock [Member]                          
Class of Stock [Line Items]                          
Shares authorized for issuance   650,000 650,000                    
Allocated Share-based Compensation Expense                 $ 1,281,000        
Shares issued to to employees, directors and consultants   614,824 614,824                    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                 2 years 4 months 24 days        
Common Shares                          
Class of Stock [Line Items]                          
Stock Issued During Period, Shares, Restricted Stock Award, Gross                 352 353      
Stock Issued During Period, Value, Restricted Stock Award, Gross                 $ 0        
Issuance of common stock and warrants, net of offering costs (in shares)                   91,062      
Warrants to purchase shares of Common Stock 236,369                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 236,369                        
Series A Preferred Stock                          
Class of Stock [Line Items]                          
Temporary Equity, Stated Value Per Share           $ 4.00              
Temporary Equity, Dividend Rate, Percentage           8.00%              
Convertible Preferred Stock Conversion Price           $ 80.00     $ 80.00     $ 80.00  
Convertible Preferred Stock Floor Price Per Share           $ 30.00              
Proceeds from Issuance of Convertible Preferred Stock           $ 1,000,000     $ 920,000        
Embedded Derivative, Fair Value of Embedded Derivative Liability           $ 216,000              
Preferred Stock, Convertible, Threshold Trading Days           10 days              
Dividends                       $ 20,000  
Debt Instrument, Interest Rate, Stated Percentage           95.00%     95.00%     95.00%  
Preferred stock, Redemption Value Percentage           120.00%              
Series A Preferred Stock | Walsh [Member]                          
Class of Stock [Line Items]                          
Warrants to purchase shares of Common Stock           250,000              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights           250,000              
Series A Preferred Stock | Minimum                          
Class of Stock [Line Items]                          
Proceeds from Issuance of Convertible Preferred Stock           $ 500,000              
Preferred stock, Redemption Basis, Amount Sought or Declared           100,000              
Preferred stock, Redemption Basis, Gain or Loss on Property           100,000              
Series A Preferred Stock | Maximum                          
Class of Stock [Line Items]                          
Proceeds from Issuance of Convertible Preferred Stock           $ 5,000,000