Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Narrative (Details)

v3.20.2
Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation $ 482 $ 456 $ 820 $ 637  
Options outstanding (in shares) 1,707,008   1,707,008   1,806,508
Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Fair value of options vested     $ 200    
General and Administrative Expense.          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation $ 500 $ 500 $ 800 $ 600  
Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted shares outstanding 150,000   150,000    
Unrecognized compensation cost related to milestone based options $ 400   $ 400    
Unrecognized compensation cost related to non-vested awards 2,500   $ 2,500    
Unrecognized compensation cost, recognition period     2 years 4 months 24 days    
Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation cost related to non-vested awards $ 300   $ 300    
Unrecognized compensation cost, recognition period     2 years 3 months 18 days    
Milestone-Based Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options outstanding (in shares) 579,402   579,402    
Unrecognized compensation cost related to milestone based options $ 700   $ 700    
Equity Incentive Plan 2019 [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Remaining shares available for issuance 1,390,326   1,390,326    
Director | Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock-based compensation $ 100   $ 200