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Equity (Details) - USD ($) $ in Thousands, $ / shares in Millions |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 25, 2019 | Mar. 31, 2020 | Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Ownership percentage |  | 100.00% | 100.00% |  |  |  |
Additional paid-in capital |  | $ 2,014,246 | $ 2,014,246 |  |  |  | $ 1,981,014
Service-Based Restricted Stock Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted in period (in shares) |  | 601,210 |  |  |  |  |
Vesting period of shares |  | 3 years |  |  |  |  |
Performance-Based Stock Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted in period (in shares) |  | 601,210 |  |  |  |  |
Vesting period of shares |  | 3 years |  |  |  |  |
Service-based Restricted Stock Units And Performance-Based Stock Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Grant date fair value |  | $ 2.5 |  |  |  |  |
Corporate Joint Venture | San Mateo |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Deferred performance incentives |  |  | $ 29,400 |  |  | $ 73,500 |
Deferred performance incentives term |  |  | 2 years |  |  | 5 years |
Equity contribution, tax impact |  |  | $ 3,100 |  |  |  |
Performance incentives earned |  |  | 14,700 | $ 14,700 | $ 14,700 |  |
Corporate Joint Venture | San Mateo II |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Due to related party | $ 125,000 |  |  |  |  |  |
Capital expenditures incurred | 150,000 |  |  |  |  |  |
Deferred performance incentives | $ 150,000 |  |  |  |  |  |
Five Point | San Mateo II | Corporate Joint Venture |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Ownership percentage | 49.00% |  |  |  |  |  |
Matador Resources Company | San Mateo II | Corporate Joint Venture |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Ownership percentage | 51.00% |  |  |  |  |  |
San Mateo II | Five Point | Corporate Joint Venture |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Contributions to related party |  |  | 50,000 |  |  |  |
Additional paid-in capital |  | $ 20,600 | 20,600 |  |  |  |
Equity contribution, tax impact |  |  | 4,300 |  |  |  |
San Mateo II | Matador Resources Company | Corporate Joint Venture |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Contributions to related party |  |  | $ 7,500 |  |  |  |
Minimum | Performance-Based Stock Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Award vesting amount, percentage |  | 0.00% |  |  |  |  |
Maximum | Performance-Based Stock Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Award vesting amount, percentage |  | 200.00% |  |  |  |  |
Property Contribution | San Mateo II | Five Point | Corporate Joint Venture |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Contributions to related party |  |  |  | 4,000 |  |  |
Property Contribution | San Mateo II | Matador Resources Company | Corporate Joint Venture |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Contributions to related party |  |  |  | $ 1,000 |  |  |

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