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Derivative Instruments - Schedule of Outstanding Commodity Derivative Instruments (Details) $ in Thousands | 1 Months Ended | 9 Months Ended
--- | --- | ---
Nov. 06, 2019 $ / bbl bbl | Sep. 30, 2019 USD ($) MMBTU $ / bbl bbl
Derivative [Line Items] |  |
Fair value assets (liabilities) | $ |  | $ 61,079
NYMEX WTI | Crude Oil | 2019 Fixed price swaps |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 2,275,000
Average swap price (in dollars per barrel) |  | 57.49
Fair value assets (liabilities) | $ |  | $ 5,744
NYMEX WTI | Crude Oil | 2019 Two-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 1,274,000
Average floor price (in dollars per barrel) |  | 58.07
Average ceiling price (in dollars per barrel) |  | 74.64
Fair value assets (liabilities) | $ |  | $ 5,002
NYMEX WTI | Crude Oil | 2019 Three-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 1,092,000
Average sub-floor price (in dollars per barrel) |  | 40.00
Average floor price (in dollars per barrel) |  | 51.57
Average ceiling price (in dollars per barrel) |  | 65.40
Fair value assets (liabilities) | $ |  | $ 768
NYMEX WTI | Crude Oil | 2020 Fixed price swaps |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 3,418,000
Average swap price (in dollars per barrel) |  | 58.69
Fair value assets (liabilities) | $ |  | $ 21,461
NYMEX WTI | Crude Oil | 2020 Two-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 2,378,000
Average floor price (in dollars per barrel) |  | 52.11
Average ceiling price (in dollars per barrel) |  | 62.98
Fair value assets (liabilities) | $ |  | $ 7,609
NYMEX WTI | 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
Fair value assets (liabilities) | $ |  | $ 15,871
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) | $ |  | $ 770
NYMEX WTI | 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
Fair value assets (liabilities) | $ |  | $ 245
NYMEX WTI | 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
Fair value assets (liabilities) | $ |  | $ 2,101
NYMEX WTI | Subsequent Event | Crude Oil | 2020 Fixed price swaps |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl | 2,005,200 |
NYMEX WTI | Subsequent Event | Crude Oil | 2021 Two-way collar |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl | 74,400 |
Average floor price (in dollars per barrel) | 54.25 |
Houston NYMEX WTI | Crude Oil | 2019 Basis swaps |  |
Derivative [Line Items] |  |
Total notional amount of oil (in Bbls) | bbl |  | 90,000
Average swap price (in dollars per barrel) |  | 4.55
Fair value assets (liabilities) | $ |  | $ 142
NYMEX HH | Natural Gas | 2019 Fixed price swaps |  |
Derivative [Line Items] |  |
Total notional amount of natural gas (in MMBtu) | MMBTU |  | 2,760,000
Average swap price (in dollars per barrel) |  | 2.92
Fair value assets (liabilities) | $ |  | $ 1,366

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