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Accrued Expenses and Other Current Liabilities
 6 Months Ended
Jun. 30, 2023
Accrued Liabilities, Current [Abstract]  
Accrued Expenses and Other Current Liabilities Accrued Expenses and Other Current liabilities
Accrued expenses consisted of the following (in thousands):
June 30,
2023		December 31,
2022
Accrued property and equipment purchases$33,463 $24,797 
Accrued research and development costs20,196 17,736 
Accrued professional fees12,232 8,112 
Other accrued expenses15,071 12,446 
Total accrued expenses$80,962 $63,091