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Derivative Instruments - Summary of Fair Value of Derivative Instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Derivative liabilities    
Derivative asset   $ 0
Total derivative instrument liabilities   0
Derivatives not designated as hedging instruments: | Cross currency swaps    
Derivative liabilities    
Derivative liability, current $ 17,680 0
Derivative liability, noncurrent $ 8,144 $ 0