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Accounts payable and accrued expenses - (Tables)
9 Months Ended
Sep. 30, 2021
Payables and Accruals [Abstract]  
Schedule of components of accounts payable and accrued expenses

September 30, 

December 31, 

    

2021

    

2020

Employee compensation, benefits, and related accruals

$

39,367

$

53,291

Income tax payable

4,315

Consulting and contracted research

 

22,553

 

18,250

Professional fees

 

5,174

 

3,614

Sales allowance

 

60,980

 

54,327

Sales rebates

 

67,056

 

63,774

Royalties

27,928

16,575

Accounts payable

 

21,462

 

18,665

Other

 

7,809

 

9,357

Total

$

252,329

$

242,168