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Acquisitions - Narrative (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 7 Months Ended | 9 Months Ended | 12 Months Ended | 13 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) | Dec. 31, 2018 USD ($) MMBoe | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) MMBoe | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) MMBoe | Dec. 31, 2017 USD ($) | [1] | Dec. 31, 2019 USD ($) | May 31, 2019 MMBoe
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from sales to customers |  |  | $ 757,000 | $ 750,300 | $ 680,400 | $ 629,400 | $ 476,100 | $ 475,500 | $ 443,000 | $ 411,900 |  |  | $ 2,817,111 | $ 1,806,473 | [1] | $ 1,300,464 |  |
Income (loss) from continuing operations before income taxes |  |  | (115,300) | $ 177,100 | $ 107,900 | $ 33,700 | $ 12,700 | $ 74,000 | $ (22,600) | $ (21,100) |  |  | 203,498 | $ 43,002 | [1] | $ (282,884) |  |
Acquisition-related costs |  |  |  |  |  |  |  |  |  |  |  |  | 6,200 |  |  |  |  |
PAI (Final) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proved reserves | MMBoe |  | 97 |  |  |  |  | 97 |  |  |  |  |  |  | 97 |  |  |  |
Acquisition, cash paid |  | $ 780,700 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 780,678 |
Percentage of interest in subsidiary transferred |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PAI (Final) | Sales Thresholds 2019 to 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, maximum |  | $ 150,000 | 150,000 |  |  |  | $ 150,000 |  |  |  | $ 150,000 |  | 150,000 | $ 150,000 |  |  | 150,000 |
LLOG Exploration Offshore L.L.C. and LLOG Bluewater Holdings, L.L.C. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proved reserves | MMBoe |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 67
Acquisition, cash paid | $ 1,238,400 |  |  |  |  |  |  |  |  |  | 1,238,353 |  |  |  |  |  |  |
Revenue from sales to customers |  |  |  |  |  |  |  |  |  |  |  | $ 278,700 |  |  |  |  |  |
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  |  |  |  | $ 60,100 |  |  |  |  |  |
LLOG Exploration Offshore L.L.C. and LLOG Bluewater Holdings, L.L.C. [Member] | Sales Thresholds 2019 to 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, maximum |  |  | 200,000 |  |  |  |  |  |  |  | 200,000 |  | 200,000 |  |  |  | 200,000 |
LLOG Exploration Offshore L.L.C. and LLOG Bluewater Holdings, L.L.C. [Member] | Net crude oil and condensate revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, maximum |  |  | $ 50,000 |  |  |  |  |  |  |  | $ 50,000 |  | $ 50,000 |  |  |  | $ 50,000 |
MP Gulf of Mexico LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Parent ownership interest |  | 80.00% |  |  |  |  | 80.00% |  |  |  |  |  |  | 80.00% |  |  |  |
PAI (Final) | MP Gulf of Mexico LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling ownership interest |  | 20.00% |  |  |  |  | 20.00% |  |  |  |  |  |  | 20.00% |  |  |  |
[1] | 1 Reclassified to conform with current presentation (see Notes C and E). 2017 revenue is presented net of $58.9 million of transportation, gathering and processing costs as historically shown prior to the adoption of ASC 606 on January 1, 2018. See Notes to Consolidated Financial Statements, page 58.

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