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Prepaid Expense and Other Current Assets
9 Months Ended
Sep. 30, 2023
Prepaid Expense and Other Assets, Current [Abstract]  
Prepaid Expenses and Other Current Assets

4. Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):

 

 

September 30,
2023

 

 

December 31,
2022

 

Research and development

 

$

4,016

 

 

$

6,670

 

Construction related prepaid assets

 

 

 

 

 

3,769

 

Interest receivable

 

 

604

 

 

 

 

Business insurance

 

 

461

 

 

 

133

 

Other

 

 

1,123

 

 

 

628

 

Total

 

$

6,204

 

 

$

11,200