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ACCRUED EXPENSES
12 Months Ended
Dec. 31, 2021
Payables and Accruals [Abstract]  
ACCRUED EXPENSES
10.
ACCRUED EXPENSES:

Accrued expenses consist of the following (in thousands):

 

 

 

December 31,

 

 

 

2021

 

 

2020

 

Compensation

 

$

27,686

 

 

$

22,147

 

PPG agreements

 

 

8,853

 

 

 

4,402

 

Research and development agreements

 

 

1,469

 

 

 

627

 

Consulting

 

 

1,314

 

 

 

771

 

Professional fees

 

 

1,000

 

 

 

908

 

Royalties

 

 

691

 

 

 

11,125

 

Other

 

 

4,461

 

 

 

1,424

 

Accrued expenses

 

$

45,474

 

 

$

41,404