Quarterly report pursuant to Section 13 or 15(d)

Accounts Payable and Accrued Liabilities (Details)

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Accounts Payable and Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Payables and Accruals [Abstract]    
Trade payables $ 2,535 $ 2,635
Other accrued liabilities 7,996 6,616
Accrued R&D projects 4,483 4,185
Employee accruals 10,817 11,361
Total accounts payable and accrued liabilities $ 25,831 $ 24,797