Quarterly report pursuant to Section 13 or 15(d)

16. GENERAL AND ADMINISTRATIVE EXPENSES (Tables)

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16. GENERAL AND ADMINISTRATIVE EXPENSES (Tables)
 3 Months Ended
Mar. 31, 2021
General and Administrative Expense [Abstract]  
General and administrative expense
Three Months Ended March 31,            
(in thousands)   2021     2020  
Salaries and benefits   $ 981     $ 996  
Professional fees     482       599  
Licensing and supplies     75       -  
Share-based compensation     289       1,612  
Administrative     633       584  
Total general and administrative expenses   $ 2,460     $ 3,791