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Derivative Instruments - Schedule of Outstanding Commodity Derivative Instruments (Details) $ in Thousands	1 Months Ended	6 Months Ended
	Aug. 07, 2019 MMBTU bbl	Jun. 30, 2019 USD ($) MMBTU $ / bbl bbl	Aug. 08, 2019 $ / bbl
Derivative [Line Items]
Fair value assets (liabilities) | $		$ 20,280
NYMEX WTI | Crude Oil | 2019 Fixed price swaps
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl		4,000,000
Average swap price (in dollars per barrel)		57.04
Fair value assets (liabilities) | $		$ (3,303)
NYMEX WTI | Crude Oil | 2019 Two-way collar
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl		2,592,000
Average floor price (in dollars per barrel)		57.87
Average ceiling price (in dollars per barrel)		74.22
Fair value assets (liabilities) | $		$ 7,308
NYMEX WTI | Crude Oil | 2019 Three-way collar
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl		2,196,000
Average sub-floor price (in dollars per barrel)		40.14
Average floor price (in dollars per barrel)		51.52
Average ceiling price (in dollars per barrel)		65.92
Fair value assets (liabilities) | $		$ (284)
NYMEX WTI | Crude Oil | 2020 Fixed price swaps
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl		2,597,000
Average swap price (in dollars per barrel)		59.30
Fair value assets (liabilities) | $		$ 6,728
NYMEX WTI | Crude Oil | 2020 Two-way collar
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl		434,000
Average floor price (in dollars per barrel)		58.07
Average ceiling price (in dollars per barrel)		74.64
Fair value assets (liabilities) | $		$ 1,835
NYMEX WTI | Crude Oil | 2020 Three-way collar
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl		4,268,000
Average sub-floor price (in dollars per barrel)		40.00
Average floor price (in dollars per barrel)		53.49
Average ceiling price (in dollars per barrel)		64.49
Fair value assets (liabilities) | $		$ 4,790
NYMEX WTI | Crude Oil | 2021 Fixed price swaps
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl		93,000
Average swap price (in dollars per barrel)		58.85
Fair value assets (liabilities) | $		$ 357
NYMEX WTI | Crude Oil | 2021 Three-way collar
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl		310,000
Average sub-floor price (in dollars per barrel)		40.00
Average floor price (in dollars per barrel)		52.97
Average ceiling price (in dollars per barrel)		63.76
Fair value assets (liabilities) | $		$ 376
NYMEX WTI | Subsequent Event | Crude Oil | 2019 Fixed price swaps
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl	4,122,000
Average swap price (in dollars per barrel)			57.13
NYMEX WTI | Subsequent Event | Crude Oil | 2019 Two-way collar
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl	2,592,000
Average floor price (in dollars per barrel)			57.87
Average ceiling price (in dollars per barrel)			74.22
NYMEX WTI | Subsequent Event | Crude Oil | 2019 Three-way collar
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl	2,196,000
Average sub-floor price (in dollars per barrel)			40.14
Average floor price (in dollars per barrel)			51.52
Average ceiling price (in dollars per barrel)			65.92
NYMEX WTI | Subsequent Event | Crude Oil | 2020 Fixed price swaps
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl	2,992,000
Average swap price (in dollars per barrel)			59.05
NYMEX WTI | Subsequent Event | Crude Oil | 2020 Two-way collar
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl	1,650,000
Average floor price (in dollars per barrel)			53.04
Average ceiling price (in dollars per barrel)			64.95
NYMEX WTI | Subsequent Event | Crude Oil | 2020 Three-way collar
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl	4,574,000
Average sub-floor price (in dollars per barrel)			40.00
Average floor price (in dollars per barrel)			53.26
Average ceiling price (in dollars per barrel)			64.48
NYMEX WTI | Subsequent Event | Crude Oil | 2021 Fixed price swaps
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl	93,000
Average swap price (in dollars per barrel)			58.85
NYMEX WTI | Subsequent Event | Crude Oil | 2021 Two-way collar
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl	62,000
Average floor price (in dollars per barrel)			50.50
Average ceiling price (in dollars per barrel)			60.70
NYMEX WTI | Subsequent Event | Crude Oil | 2021 Three-way collar
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl	734,000
Average sub-floor price (in dollars per barrel)			40.00
Average floor price (in dollars per barrel)			51.26
Average ceiling price (in dollars per barrel)			64.05
ICE Brent-NYMEX WTI | Crude Oil | 2019 Basis swaps
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl		60,000
Average swap price (in dollars per barrel)		9.68
Fair value assets (liabilities) | $		$ 86
ICE Brent-NYMEX WTI | Subsequent Event | Crude Oil | 2019 Basis swaps
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl	60,000
Average swap price (in dollars per barrel)			9.68
Midland-NYMEX WTI | Crude Oil | 2019 Basis swaps
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl		120,000
Average swap price (in dollars per barrel)		6.71
Fair value assets (liabilities) | $		$ (740)
Midland-NYMEX WTI | Subsequent Event | Crude Oil | 2019 Basis swaps
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl	120,000
Average swap price (in dollars per barrel)			6.71
Houston NYMEX WTI | Crude Oil | 2019 Basis swaps
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl		366,000
Average swap price (in dollars per barrel)		4.55
Fair value assets (liabilities) | $		$ 90
Houston NYMEX WTI | Subsequent Event | Crude Oil | 2019 Basis swaps
Derivative [Line Items]
Total notional amount of oil (in Bbls) | bbl	366,000
Average swap price (in dollars per barrel)			4.55
NYMEX HH | Natural Gas | 2019 Fixed price swaps
Derivative [Line Items]
Total notional amount of natural gas (in MMBtu) | MMBTU		5,520,000
Average swap price (in dollars per barrel)		2.92
Fair value assets (liabilities) | $		$ 3,037
NYMEX HH | Subsequent Event | Natural Gas | 2019 Fixed price swaps
Derivative [Line Items]
Total notional amount of natural gas (in MMBtu) | MMBTU	5,520,000
Average swap price (in dollars per barrel)			2.92

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611

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