Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financial assets
Derivative asset - current	$ 31,626	$ 8,860
Derivative asset - noncurrent	11,642	770
Financial liabilities
Derivative liability - current	169	6,889
Derivative liability - noncurrent	349	0
Fair Value on a Recurring Basis
Financial assets
Derivative asset - current	31,626	8,860
Derivative asset - noncurrent	11,642	770
Total financial assets	43,268	9,630
Financial liabilities
Derivative liability - current	169	6,889
Derivative liability - noncurrent	349	0
Total financial liabilities	518	6,889
Level 1 \| Fair Value on a Recurring Basis
Financial assets
Derivative asset - current	0	0
Derivative asset - noncurrent	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	31,626	8,860
Derivative asset - noncurrent	11,642	770
Total financial assets	43,268	9,630
Financial liabilities
Derivative liability - current	169	6,889
Derivative liability - noncurrent	349	0
Total financial liabilities	518	6,889
Level 3 \| Fair Value on a Recurring Basis
Financial assets
Derivative asset - current	0	0
Derivative asset - noncurrent	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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