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Equity (Tables)
9 Months Ended
Sep. 30, 2021
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, 2021   815   $21.53    8.51   $120 
Granted   880    6.43           
Exercised   (1)   6.69           
Cancelled   (268)   19.65           
Outstanding, September 30, 2021   1,426    12.57    8.55    2,207 
Exercisable, September 30, 2021   337    29.19    5.38    134 

 

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, 2021   2,113   $20.55    2.76   $362 
Granted   1    8.30           
Exercised   
-
    
-
           
Cancelled/Expired   
-
    
-
           
Outstanding, September 30, 2021   2,114   $20.54    2.01   $414 
Exercisable, September 30, 2021   2,112   $20.55    2.01   $414