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Accrued Liabilities (Tables)
9 Months Ended
Sep. 30, 2023
Accrued Liabilities, Current [Abstract]  
Summary of Accrued Liabilities

Accrued liabilities were comprised of the following (in thousands):

 

 

 

As of
September 30, 2023

 

 

As of
December 31, 2022

 

Payroll-related

 

$

3,068

 

 

$

2,796

 

Property, plant, and equipment

 

 

110

 

 

 

1,966

 

Deferred revenue

 

 

24

 

 

 

198

 

Insurance premiums and accrued interest

 

 

709

 

 

 

 

Other

 

 

1,236

 

 

 

1,243

 

Total current accrued liabilities

 

$

5,147

 

 

$

6,203