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Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2020
Payables and Accruals [Abstract]  
Schedule of Accrued Liabilities

Accrued expenses consisted of the following:

 

     At December 31,  
     2020      2019  
     (in thousands)  

Accrued employee expenses

   $ 2,796    $ 1,757

Other

     237      249
  

 

 

    

 

 

 

Total accrued expenses

   $ 3,033    $ 2,006