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Accrued Expenses
 6 Months Ended
Jun. 30, 2024
Payables and Accruals [Abstract]  
Accrued Expenses

5. Accrued Expenses

Accrued expenses consisted of the following:

 

 

June 30,

 

 

December 31,

 

 

 

2024

 

 

2023

 

 

 

(In thousands)

 

Accrued research and development

 

$

21,961

 

 

$

27,411

 

Employee compensation and benefits

 

 

14,901

 

 

 

26,615

 

Accrued legal and professional expenses

 

 

3,633

 

 

 

2,063

 

Accrued construction costs

 

 

2,327

 

 

 

6,891

 

Accrued other

 

 

2,305

 

 

 

4,037

 

Total accrued expenses

 

$

45,127

 

 

$

67,017