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Accounts Payable and Accrued Liabilities - Summary of Accounts Payable and Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Trade and other current payables [abstract]    
Trade payables $ 67,107 $ 38,969
Taxes payable 13,205 201
Accrued expenses 58,792 98,730
Accounts payable and accrued liabilities $ 139,104 $ 137,900