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Accrued Liabilities
 6 Months Ended
Jun. 30, 2022
Payables and Accruals [Abstract]  
Accrued Liabilities Accrued Liabilities
Accrued liabilities consisted of the following:

June 30,December 31,
20222021
(in thousands)
Construction $374 $11,192 
Insurance1,055 2,582 
Payroll1,188 792 
Production 872 461 
Professional services539 273 
Other261 720 
Total accrued liabilities$4,289 $16,020