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Derivative Instruments - Schedule of Outstanding Commodity Derivative Instruments (Details) $ in Thousands | 1 Months Ended | 3 Months Ended
--- | --- | ---
May 08, 2019 MMBTU $ / bbl bbl | Mar. 31, 2019 USD ($) MMBTU $ / bbl $ / MMBTU bbl
Derivative [Line Items] |  |
Fair value assets (liabilities) | $ |  | $ (24,286)
NYMEX WTI | Crude Oil | 2019 Fixed price swaps |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 3,881,000
Average swap price (in dollars per barrel) |  | 54.02
Fair value assets (liabilities) | $ |  | $ (23,216)
NYMEX WTI | Crude Oil | 2019 Two-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 3,542,000
Average floor price (in dollars per barrel) |  | 57.65
Average ceiling price (in dollars per barrel) |  | 74.72
Fair value assets (liabilities) | $ |  | $ 5,381
NYMEX WTI | Crude Oil | 2019 Three-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 3,300,000
Average sub-floor price (in dollars per barrel) |  | 40.37
Average floor price (in dollars per barrel) |  | 51.43
Average ceiling price (in dollars per barrel) |  | 66.81
Fair value assets (liabilities) | $ |  | $ (2,375)
NYMEX WTI | Crude Oil | 2020 Fixed price swaps |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 829,000
Average swap price (in dollars per barrel) |  | 56.60
Fair value assets (liabilities) | $ |  | $ (2,363)
NYMEX WTI | Crude Oil | 2020 Two-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 372,000
Average floor price (in dollars per barrel) |  | 58.08
Average ceiling price (in dollars per barrel) |  | 76.05
Fair value assets (liabilities) | $ |  | $ 1,270
NYMEX WTI | Crude Oil | 2020 Three-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 1,712,000
Average sub-floor price (in dollars per barrel) |  | 40.00
Average floor price (in dollars per barrel) |  | 55.39
Average ceiling price (in dollars per barrel) |  | 61.13
Fair value assets (liabilities) | $ |  | $ (2,081)
NYMEX WTI | Crude Oil | 2021 Three-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 124,000
Average sub-floor price (in dollars per barrel) |  | 40.00
Average floor price (in dollars per barrel) |  | 56.18
Average ceiling price (in dollars per barrel) |  | 60.43
Fair value assets (liabilities) | $ |  | $ (59)
NYMEX WTI | Subsequent Event | Crude Oil | 2019 Fixed price swaps |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl | 4,952,000 |
Average swap price (in dollars per barrel) | 56.15 |
NYMEX WTI | Subsequent Event | Crude Oil | 2019 Two-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl | 3,848,000 |
Average floor price (in dollars per barrel) | 57.68 |
Average ceiling price (in dollars per barrel) | 74.04 |
NYMEX WTI | Subsequent Event | Crude Oil | 2019 Three-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl | 3,300,000 |
Average sub-floor price (in dollars per barrel) | 40.37 |
Average floor price (in dollars per barrel) | 51.43 |
Average ceiling price (in dollars per barrel) | 66.81 |
NYMEX WTI | Subsequent Event | Crude Oil | 2020 Fixed price swaps |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl | 2,171,000 |
Average swap price (in dollars per barrel) | 59.09 |
NYMEX WTI | Subsequent Event | 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 |
NYMEX WTI | Subsequent Event | Crude Oil | 2020 Three-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl | 3,110,000 |
Average sub-floor price (in dollars per barrel) | 40.00 |
Average floor price (in dollars per barrel) | 54.79 |
Average ceiling price (in dollars per barrel) | 63.75 |
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 Three-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl | 186,000 |
Average sub-floor price (in dollars per barrel) | 40.00 |
Average floor price (in dollars per barrel) | 54.96 |
Average ceiling price (in dollars per barrel) | 62.31 |
ICE Brent-NYMEX WTI | Crude Oil | 2019 Basis swaps |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 244,000
Average swap price (in dollars per barrel) |  | 9.68
Fair value assets (liabilities) | $ |  | $ 549
ICE Brent-NYMEX WTI | Subsequent Event | Crude Oil | 2019 Basis swaps |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl | 244,000 |
ICE Brent-NYMEX WTI | Subsequent Event | Natural Gas | 2019 Basis swaps |  |
Derivative [Line Items] |  |
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 |  | 488,000
Average swap price (in dollars per barrel) |  | 6.71
Fair value assets (liabilities) | $ |  | $ (2,971)
Midland-NYMEX WTI | Subsequent Event | Crude Oil | 2019 Basis swaps |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl | 488,000 |
Midland-NYMEX WTI | Subsequent Event | Natural Gas | 2019 Basis swaps |  |
Derivative [Line Items] |  |
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 |  | 549,000
Average swap price (in dollars per barrel) |  | 4.55
Fair value assets (liabilities) | $ |  | $ (305)
Houston NYMEX WTI | Subsequent Event | Crude Oil | 2019 Basis swaps |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl | 549,000 |
Houston NYMEX WTI | Subsequent Event | Natural Gas | 2019 Basis swaps |  |
Derivative [Line Items] |  |
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 |  | 8,796,000
Average swap price (in dollars per barrel) | $ / MMBTU |  | 2.92
Fair value assets (liabilities) | $ |  | $ 1,148
NYMEX HH | Subsequent Event | Natural Gas | 2019 Fixed price swaps |  |
Derivative [Line Items] |  |
Total notional amount of natural gas (in MMBtu) | MMBTU | 8,796,000 |
Average swap price (in dollars per barrel) | 2.92 |
IF NNG Ventura-NYMEX HH | Natural Gas | 2019 Basis swaps |  |
Derivative [Line Items] |  |
Total notional amount of natural gas (in MMBtu) | MMBTU |  | 2,275,000
Average swap price (in dollars per barrel) |  | 0.02
Fair value assets (liabilities) | $ |  | $ 736
IF NNG Ventura-NYMEX HH | Subsequent Event | Natural Gas | 2019 Basis swaps |  |
Derivative [Line Items] |  |
Total notional amount of natural gas (in MMBtu) | MMBTU | 2,275,000 |
Average swap price (in dollars per barrel) | 0.02 |

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