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Note 8 - Accrued Expenses
3 Months Ended
Mar. 31, 2021
Notes to Financial Statements  
Accounts Payable and Accrued Liabilities Disclosure [Text Block]

8.

Accrued Expenses

 

Accrued expenses consist of the following:

 

   

March 31,
2021

   

December 31,
2020

 
                 

Compensation and related expenses

  $ 5,726     $ 7,345  

Professional fees

    2,904       3,438  

Operating lease liability - current

    1,517       1,437  

Clinical trial costs

    1,746       1,429  

Financing lease liability - current

    119       148  

Other

    1,448       996  

Total

  $ 13,460     $ 14,793