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Equity (Tables)
3 Months Ended
Mar. 31, 2022
Option [Member]  
Equity (Tables) [Line Items]  
Schedule of stock option activity
(in thousands, except for per-share amounts)  Number of Shares   Weighted
Average
Exercise
Price
   Weighted
Average
Remaining
Contractual
Term
(in years)
  Aggregate
Intrinsic
Value
 
Outstanding, January 1, 2022   1,362   $12.45   8.69  $
           -
 
Granted   5    5.89         
Cancelled   (34)   8.47         
Outstanding, March 31, 2022   1333    12.52   8.36   
-
 
                   
Exercisable, March 31, 2022   415    24.23   6.74   
-
 

   

Warrant [Member]  
Equity (Tables) [Line Items]  
Schedule of warrant activities
(in thousands, except for per-share amounts)  Number of Shares   Weighted
Average
Exercise
Price
   Weighted
Average
Remaining
Contractual
Term
(in years)
  Aggregate
Intrinsic
Value
 
Outstanding, January 1, 2022   2,112   $20.52   1.76  $      276 
Granted   
-
    
-
         
Exercised   (55)   3.13         
Cancelled/Expired   
-
    
-
         
Outstanding, March 31, 2022   2,057   $20.99   1.56  $
-
 
                   
Exercisable, March 31, 2022   2,052   $20.56   1.56  $
-