Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details)

v3.20.2
Stock-Based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Board of Directors [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation expenses   $ 209        
2012 Equity Incentive Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized for issuance 1,200,000     1,200,000    
Common stock reserved for issuance awards increased due to forfeitures 560,260     560,260    
Stock options exercisable, description       Stock options generally vest and become exercisable with respect to 100% of the common stock subject to such stock option on the third (3rd) anniversary of the date of grant.    
2012 Equity Incentive Plan [Member] | Minimum [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized for issuance           850,000
2012 Equity Incentive Plan [Member] | Maximum [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized for issuance           1,200,000
Share-Based Compensation [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized for issuance   172,727        
Stock-based compensation expenses $ 9   $ 28 $ 236 $ 93