Quarterly report pursuant to Section 13 or 15(d)

Stock Options, Warrants and Restricted Common Stock (Narrative) (Details)

v3.21.2
Stock Options, Warrants and Restricted Common Stock (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost $ 3.1   $ 3.1  
Unrecognized compensation cost, period for recognition     7 years 10 months 24 days  
Fair value of restricted stock granted     $ 5.0  
Restricted stock awards under 2019 Equity Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total stock-based compensation $ 1.0 $ 0.5 $ 1.9 $ 2.4
Stock Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options outstanding 12,000   12,000  
Weighted average exercise price $ 4.09   $ 4.09  
Weighted average remaining contractual term     2 years 2 months 12 days  
Intrinsic value $ 0.4   $ 0.4