Quarterly report pursuant to Section 13 or 15(d)

Description of the Business, Basis of Presentation and Summary of Significant Accounting Policies (Details Textual)

v3.21.1
Description of the Business, Basis of Presentation and Summary of Significant Accounting Policies (Details Textual)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
segment
shares
Mar. 31, 2020
USD ($)
shares
Dec. 31, 2020
USD ($)
Accounting Policies [Abstract]      
Number of operating segments | segment 1    
Number of reportable segments | segment 1    
Net loss $ (5,177) $ (3,271)  
Net cash used in operating activities (5,130) $ (4,321)  
Accumulated deficit (75,761)   $ (70,584)
Working capital 24,800    
Cash balance $ 26,300    
Amount of options to purchase (in shares) | shares 3,920,925 3,271,050  
Amount of warrants to purchase (in shares) | shares 1,114,608 1,359,608  
Amount of unvested restricted stock (in shares) | shares 295,846 145,838