Derivative Activities - Schedule of Additional Information Related to Master Netting Arrangements with Derivative Counterparties (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Gross Amounts of Recognized Assets	$ 52,239	$ 74,602
Gross Amounts Offset in the Balance Sheet	(22,886)	(34,590)
Net Amounts of Assets Presented in the Balance Sheet	29,353	40,012
Gross Amounts of Recognized (Liabilities)	(67,164)	(71,043)
Gross Amounts Offset in the Balance Sheet	22,886	34,590
Net Amounts of (Liabilities) Presented in the Balance Sheet	(44,278)	(36,453)
Contingent Consideration
Derivative [Line Items]
Gross Amounts of Recognized Assets	19,890	15,960
Gross Amounts Offset in the Balance Sheet	0	0
Net Amounts of Assets Presented in the Balance Sheet	19,890	15,960
Swap \| NGLs (C5-Natural Gasoline)
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)	(8,743)
Gross Amounts Offset in the Balance Sheet	250
Net Amounts of (Liabilities) Presented in the Balance Sheet	(8,493)
Swap \| NGLs (NC4-Normal Butane)
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)	(839)
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of (Liabilities) Presented in the Balance Sheet	(839)
Collars \| NGLs (C3-Propane)
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)	(4,618)
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of (Liabilities) Presented in the Balance Sheet	(4,618)
Commodity \| Swap \| Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	12,881	33,559
Gross Amounts Offset in the Balance Sheet	(10,200)	(16,821)
Net Amounts of Assets Presented in the Balance Sheet	2,681	16,738
Gross Amounts of Recognized (Liabilities)	(9,164)	(10,120)
Gross Amounts Offset in the Balance Sheet	10,200	16,821
Net Amounts of (Liabilities) Presented in the Balance Sheet	1,036	6,701
Commodity \| Swap \| Crude Oil
Derivative [Line Items]
Gross Amounts of Recognized Assets	1,105	2,465
Gross Amounts Offset in the Balance Sheet	(665)	(829)
Net Amounts of Assets Presented in the Balance Sheet	440	1,636
Gross Amounts of Recognized (Liabilities)	(10,857)	(5,471)
Gross Amounts Offset in the Balance Sheet	665	829
Net Amounts of (Liabilities) Presented in the Balance Sheet	(10,192)	(4,642)
Commodity \| Swap \| NGLs (C3-Propane)
Derivative [Line Items]
Gross Amounts of Recognized Assets	192
Gross Amounts Offset in the Balance Sheet	(192)
Net Amounts of Assets Presented in the Balance Sheet	0
Gross Amounts of Recognized (Liabilities)	(4,989)	(8,243)
Gross Amounts Offset in the Balance Sheet	192	0
Net Amounts of (Liabilities) Presented in the Balance Sheet	(4,797)	(8,243)
Commodity \| Swap \| NGLs (C5-Natural Gasoline)
Derivative [Line Items]
Gross Amounts of Recognized Assets	250
Gross Amounts Offset in the Balance Sheet	(250)
Net Amounts of Assets Presented in the Balance Sheet	0
Gross Amounts of Recognized (Liabilities)		(4,897)
Gross Amounts Offset in the Balance Sheet		0
Net Amounts of (Liabilities) Presented in the Balance Sheet		(4,897)
Commodity \| Swap \| NGLs (NC4-Normal Butane)
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)		(651)
Gross Amounts Offset in the Balance Sheet		0
Net Amounts of (Liabilities) Presented in the Balance Sheet		(651)
Commodity \| Swaptions \| Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	0
Gross Amounts Offset in the Balance Sheet	(1,325)
Net Amounts of Assets Presented in the Balance Sheet	(1,325)
Gross Amounts of Recognized (Liabilities)	(5,823)	(9,803)
Gross Amounts Offset in the Balance Sheet	1,325	0
Net Amounts of (Liabilities) Presented in the Balance Sheet	(4,498)	(9,803)
Commodity \| Swaptions \| Crude Oil
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)	(1,323)
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of (Liabilities) Presented in the Balance Sheet	(1,323)
Commodity \| Collars \| Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	1,029	7,016
Gross Amounts Offset in the Balance Sheet	(582)	(2,329)
Net Amounts of Assets Presented in the Balance Sheet	447	4,687
Gross Amounts of Recognized (Liabilities)	0	0
Gross Amounts Offset in the Balance Sheet	582	2,329
Net Amounts of (Liabilities) Presented in the Balance Sheet	582	2,329
Commodity \| Collars \| NGLs (C3-Propane)
Derivative [Line Items]
Gross Amounts of Recognized Assets		0
Gross Amounts Offset in the Balance Sheet		(107)
Net Amounts of Assets Presented in the Balance Sheet		(107)
Gross Amounts of Recognized (Liabilities)		(3,086)
Gross Amounts Offset in the Balance Sheet		107
Net Amounts of (Liabilities) Presented in the Balance Sheet		(2,979)
Commodity \| Collars \| NGLs (NC4-Normal Butane)
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)		(401)
Gross Amounts Offset in the Balance Sheet		0
Net Amounts of (Liabilities) Presented in the Balance Sheet		(401)
Commodity \| Basis Swaps \| Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	12,156	7,894
Gross Amounts Offset in the Balance Sheet	(5,252)	(3,502)
Net Amounts of Assets Presented in the Balance Sheet	6,904	4,392
Gross Amounts of Recognized (Liabilities)	(2,639)	(4,197)
Gross Amounts Offset in the Balance Sheet	5,252	3,502
Net Amounts of (Liabilities) Presented in the Balance Sheet	2,613	(695)
Commodity \| Spread Swaps \| NGLs (C3-Propane)
Derivative [Line Items]
Gross Amounts of Recognized Assets	4,376	4,863
Gross Amounts Offset in the Balance Sheet	(4,376)	(4,863)
Net Amounts of Assets Presented in the Balance Sheet	0	0
Gross Amounts of Recognized (Liabilities)	(3,904)	(4,069)
Gross Amounts Offset in the Balance Sheet	4,376	4,863
Net Amounts of (Liabilities) Presented in the Balance Sheet	472	794
Commodity \| Three Way Collars \| Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	228	535
Gross Amounts Offset in the Balance Sheet	0	(6,139)
Net Amounts of Assets Presented in the Balance Sheet	228	(5,604)
Gross Amounts of Recognized (Liabilities)	(14,258)	(18,353)
Gross Amounts Offset in the Balance Sheet	0	6,139
Net Amounts of (Liabilities) Presented in the Balance Sheet	(14,258)	(12,214)
Commodity \| Calls \| NGLs (C5-Natural Gasoline)
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)		(546)
Gross Amounts Offset in the Balance Sheet		0
Net Amounts of (Liabilities) Presented in the Balance Sheet		(546)
Freight \| Swap
Derivative [Line Items]
Gross Amounts of Recognized Assets	132	2,310
Gross Amounts Offset in the Balance Sheet	(44)	0
Net Amounts of Assets Presented in the Balance Sheet	88	2,310
Gross Amounts of Recognized (Liabilities)	(7)	(1,206)
Gross Amounts Offset in the Balance Sheet	44	0
Net Amounts of (Liabilities) Presented in the Balance Sheet	$ 37	$ (1,206)

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226003-175313

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

+ Details

Name:	us-gaap_DerivativeAssetFairValueGrossLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959

+ Details

Name:	us-gaap_DerivativeFairValueOfDerivativeAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226006-175313

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=d3e41678-113959

+ Details

Name:	us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313

+ Details

Name:	us-gaap_DerivativeFairValueOfDerivativeLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value, after offset of derivative asset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=d3e41678-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226006-175313

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313

+ Details

Name:	us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value of asset associated with financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226003-175313

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959

+ Details

Name:	us-gaap_DerivativeLiabilityFairValueGrossAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration