Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Narrative (Details)

v3.20.1
Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation $ 338 $ 181  
Options outstanding (in shares) 1,764,508   1,806,508
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair value of options vested $ 100    
General and Administrative Expense.      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation $ 300 $ 200  
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted shares outstanding 150,000    
Unrecognized compensation cost related to milestone based options $ 400    
Unrecognized compensation cost related to non-vested awards $ 2,900    
Unrecognized compensation cost, recognition period 2 years 6 months    
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation cost related to non-vested awards $ 300    
Unrecognized compensation cost, recognition period 2 years 6 months    
Milestone-Based Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options outstanding (in shares) 579,402    
Unrecognized compensation cost related to milestone based options $ 700    
Equity Incentive Plan 2019 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Remaining shares available for issuance 1,301,357    
Director | Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation $ 100