Fair Value Measurements - Summary of Fair Value of Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financial assets
Derivative asset- current	$ 7,509	$ 8,860
Derivative asset- noncurrent	396	770
Financial liabilities
Derivative liability - current	1,135	6,889
Derivative liability - noncurrent	173	0
Fair Value on a Recurring Basis
Financial assets
Derivative asset- current	7,509	8,860
Derivative asset- noncurrent	396	770
Total financial assets	7,905	9,630
Financial liabilities
Derivative liability - current	1,135	6,889
Derivative liability - noncurrent	173	0
Total financial liabilities	1,308	6,889
Level 1 \| Fair Value on a Recurring Basis
Financial assets
Derivative asset- current	0	0
Derivative asset- noncurrent	0	0
Total financial assets	0	0
Financial liabilities
Derivative liability - current	0	0
Derivative liability - noncurrent	0	0
Total financial liabilities	0	0
Level 2 \| Fair Value on a Recurring Basis
Financial assets
Derivative asset- current	7,509	8,860
Derivative asset- noncurrent	396	770
Total financial assets	7,905	9,630
Financial liabilities
Derivative liability - current	1,135	6,889
Derivative liability - noncurrent	173	0
Total financial liabilities	1,308	6,889
Level 3 \| Fair Value on a Recurring Basis
Financial assets
Derivative asset- current	0	0
Derivative asset- noncurrent	0	0
Total financial assets	0	0
Financial liabilities
Derivative liability - current	0	0
Derivative liability - noncurrent	0	0
Total financial liabilities	$ 0	$ 0

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