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Accounts Payable and Accrued Liabilities
9 Months Ended
Sep. 30, 2021
Payables and Accruals [Abstract]  
Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities
The following table summarizes the Company's accounts payable and accrued liabilities.

(in thousands)September 30, 2021December 31, 2020
Trade payables$3,263 $2,635 
Other accrued liabilities8,322 6,616 
Accrued R&D projects3,865 4,185 
Employee accruals14,520 11,361 
Total accounts payable and accrued liabilities$29,970 $24,797