Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details)

v3.21.1
Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Feb. 06, 2020
Feb. 17, 2021
Jan. 27, 2021
Jan. 22, 2021
Jan. 20, 2021
Aug. 28, 2020
Mar. 31, 2021
Mar. 31, 2020
Jan. 02, 2021
Dec. 31, 2020
Stock-Based Compensation (Details) [Line Items]                    
Accrued expenses (in Dollars)               $ 56    
Weighted average grant date fair value (in Dollars per share)             $ 1.08      
Prepaid compensation amount (in Dollars)             $ 162      
Compensation expense (in Dollars)             $ 55      
Number of warrants purchased             8,733,625      
Exercise price (in Dollars per share)             $ 1.30      
Risk-free interest rate             0.71% 1.49%    
Expected life in years             5 years 255 days 5 years 292 days    
Expected stock volatility percentage             106.90% 79.59%    
Expected dividend yields percentage             0.00% 0.00%    
General and administrative expense (in Dollars)             $ 9 $ 19    
Services agreement, description         The fair value of the warrants were valued on the date of grant at $355 using the Black-Scholes option-pricing model with the following parameters: (1) risk-free interest rate of 0.19%; (2) expected life in years of 3.0; (3) expected stock volatility of 100.99%; and (4) expected dividend yield of 0%. The Company recorded $59 as general and administrative expense in the accompanying consolidated statement of comprehensive loss in relation to the consulting agreement for the three months ended March 31, 2021.          
Securities purchase agreement, description           the Company entered into a securities purchase agreement (the “Securities Purchase Agreement”) under which it sold and issued to an institutional investor (the “Holder”), in a registered direct offering, an aggregate of 3,200,000 shares of the Company’s common stock par value $0.0001 per share (the “Common Stock”), and pre-funded warrants to purchase an aggregate of 5,533,625 shares of Common Stock (the “Pre-Funded Warrants”) at an exercise price of $0.001 per share. During the three months ended March 31, 2021, the Pre-Funded Warrants for 5,533,625 shares of common stock were exercised which resulted in aggregate proceeds of $6.        
Due to exercise units       733,625            
Cash paid payment per share (in Dollars per share)     $ 0.10              
Number warrant issued     600,000              
Received gross proceeds before expenses (in Dollars)     $ 11,000              
Outstanding private placement warrants     8,000,000              
Exercisable and expire term     5 years              
Fair alue adjustment of warrants, shares             6,000,000      
Fair value warrants amount (in Dollars)             $ 6,745      
Risk free interest rates minimum             0.41%      
Risk free interest rates maximum             0.57%      
Expected stock volatilities percentage minimum             103.00%      
Expected stock volatilities percentage maximum             103.23%      
Deemed dividend (in Dollars)             $ 6,145      
Cash fees (in Dollars)             $ 300      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number             8,847,471      
Description of incentive plan             On January 1, 2021, pursuant to an annual evergreen provision, the number of shares of common stock reserved for future grants was increased by 1,936,669 shares. Under the 2016 Plan, effective as of January 1, 2021, the maximum number of shares of the Company’s common stock authorized for issuance is 7,592,663. As of March 31, 2021, there were 371,577 shares of common stock available for future grant under the 2016 Plan.      
Number of shares of common stock reserved for future grants was increased                 1,936,669  
Maximum number of shares                 7,592,663  
Unamortized share based compensation for stock options (in Dollars)             $ 3,006      
Weighted-average recognition period restricted stock units             1 year 25 days      
Number of outstanding options to purchase             2,645,219      
Weighted-average exercise price (in Dollars per share)             $ 4.14      
Share based compensation expense related to stock options (in Dollars)             $ 669 $ 682    
Restricted stock unit   160,000                
Restricted stock units   266,000                
Minimum [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Expected life in years             4 years 346 days      
Common Stock [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Exercised, shares             14,267,250      
Percentage of number of shares             6.00%      
Restricted stock unit             65,915 15,070    
Warrant [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Exercise price (in Dollars per share)             $ 3.00     $ 1.86
Warrants outstanding             9,130,821     17,058,051
New Warrants [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Gross proceeds before expenses     6,000,000              
Exercised, shares             8,000,000      
Cash excercise (in Dollars)     $ 200              
Services Agreement [Member] | Common Stock [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Number of warrants purchased 120,000                  
Warrant term 3 years                  
Services Agreement [Member] | Warrant [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Granted 60,000                  
Number of warrants purchased         340,020          
Warrant term         3 years          
Exercise price (in Dollars per share) $ 2.16                  
Remaining warrants granted 60,000                  
Exercise price (in Dollars per share) $ 3.50       $ 1.75          
Fair value of warrants share (in Dollars) $ 112                  
Risk-free interest rate 1.43%                  
Expected life in years 3 years                  
Expected stock volatility percentage 74.82%                  
Expected dividend yields percentage 0.00%                  
Restricted Stock Units (RSUs) [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Granted             426,000      
General and administrative expense (in Dollars)             $ 182      
Weighted-average recognition period restricted stock units             1 year 43 days      
Restricted stock units             501,265      
Restricted stock unit awards granted (in Dollars)   $ 758                
Unamortized stock compensation for restricted stock units (in Dollars)             $ 1,473      
Private Placement [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Private placement warrants shares           8,000,000        
Private Placement [Member] | New Warrants [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Exercise price (in Dollars per share)     $ 2.12              
Warrants outstanding     6,000,000              
Purchase warrant per share (in Dollars per share)     $ 0.75              
Private Placement [Member] | Exercise Agreement [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Warrants outstanding     8,000,000              
Private Placement [Member] | Exercise Agreement [Member] | New Warrants [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Warrants outstanding       8,000,000            
Executives and Employees [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Number of shares issued   52,317                
Board of Directors [Member]                    
Stock-Based Compensation (Details) [Line Items]                    
Granted   121,237                
Share price (in Dollars per share)   $ 1.78                
Cash compensation for service (in Dollars)   $ 216