Annual report pursuant to Section 13 and 15(d)

Stock Options, Warrants and Restricted Common Stock (Schedule of Award Activity) (Details)

v3.21.1
Stock Options, Warrants and Restricted Common Stock (Schedule of Award Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Stock Incentive Plan [Member]      
Shares Underlying Options/Warrants      
Outstanding, beginning 12,000 62,000  
Granted    
Exercised    
Forfeited   (50,000)  
Outstanding and Exercisable, ending   12,000 62,000
Exercisable at December 31, 2020 12,000    
Weighted Average Exercise Price      
Outstanding, beginning $ 4.09 $ 15.71  
Granted    
Exercised    
Forfeited   18.50  
Outstanding and Exercisable, ending   $ 4.09 $ 15.71
Exercisable at December 31, 2020 $ 4.09    
Weighted Average Remaining Contractual Term      
Outstanding and Exercisable   3 years 8 months 12 days 9 years 2 months 12 days
Exercisable at December 31, 2020 2 years 8 months 12 days    
Aggregate Intrinsic Value      
Outstanding and Exercisable $ 155  
Nonqualified [Member]      
Shares Underlying Options/Warrants      
Outstanding, beginning 3,574,257 1,671,113  
Granted   1,908,144  
Exercised (1,492,487)    
Forfeited (20,000) (5,000)  
Outstanding and Exercisable, ending 2,061,770 3,574,257 1,671,113
Weighted Average Exercise Price      
Outstanding, beginning $ 19.48 $ 39.47  
Granted   1.94  
Exercised 1.94    
Forfeited 3.50 7.90  
Outstanding and Exercisable, ending $ 32.33 $ 19.48 $ 39.47
Weighted Average Remaining Contractual Term      
Outstanding and Exercisable 1 year 1 month 6 days 2 years 10 months 24 days 2 years
Issued   5 years 2 months 12 days  
Aggregate Intrinsic Value      
Outstanding and Exercisable $ 6,256