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Summary of Significant Accounting Policies - Summary of Accrued Costs (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Accrued capital expenditures	$ 26,839	$ 24,959
Accrued interest payable	24,597	67,265
Accrued transportation costs	23,867	25,353
Accrued employee compensation	4,562	7,519
Other	4,445	4,457
Accrued ad valorem taxes	3,000	0
Accrued lease operating expenses	2,613	3,466
Total accrued expenses	$ 89,923	$ 133,019

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Accrued Ad Valorem Taxes Payable

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Accrued capital expenditures.

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Accrued lease operating expenses.

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Accrued transportation costs.

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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-SubTopic 10
-Section S99
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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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