Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Narrative (Details)

v3.19.3
Stock-Based Compensation - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Jun. 04, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation $ 338 $ 337 $ 975 $ 1,005    
Options outstanding (in shares) 1,845,508   1,845,508     2,001,008
General and Administrative Expense.            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation $ 300 $ 300 $ 1,000 $ 1,000    
Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation cost related to non-vested awards $ 1,800   $ 1,800      
Unrecognized compensation cost, recognition period     2 years 9 months 18 days      
Restricted shares outstanding 150,000   150,000      
Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation cost related to non-vested awards $ 400   $ 400      
Unrecognized compensation cost, recognition period     3 years      
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 non-vested awards $ 700   $ 700      
Equity Incentive Plan 2019 [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Remaining shares available for issuance 2,589,077   2,589,077      
Authorized shares (in shares) 7,073,922   7,073,922   2,300,000