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ACCRUED EXPENSES (Tables)
 12 Months Ended
Dec. 31, 2019
Payables And Accruals [Abstract]  
Accrued Expenses

Accrued expenses consist of the following (in thousands):

 

  

 

December 31,

 

 

 

2019

 

 

2018

 

Compensation

 

$

30,295

 

 

$

13,803

 

Royalties

 

 

11,776

 

 

 

6,996

 

Research and development agreements

 

 

3,052

 

 

 

3,572

 

Consulting

 

 

471

 

 

 

527

 

Professional Fees

 

 

268

 

 

 

655

 

Other

 

 

3,160

 

 

 

10,504

 

Accrued Expenses

 

$

49,022

 

 

$

36,057