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ACQUISITIONS & DIVESTITURES - NARRATIVE (Details) |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Apr. 01, 2021 USD ($) number $ / shares shares | Nov. 30, 2021 $ / shares | Sep. 30, 2021 USD ($) $ / shares | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) $ / shares | Sep. 30, 2020 USD ($) | Dec. 31, 2020 $ / shares
Business Acquisition [Line Items] |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  | $ 0.01 |  | $ 0.01 |  | $ 0.01
Merger transaction costs |  |  | $ 5,580,000 | $ 888,000 | $ 27,121,000 | $ 909,000 |
HighPoint Merger |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares | $ 0.01 |  |  |  |  |  |
Exchange ratio (in shares) | shares | 0.11464 |  |  |  |  |  |
Common stock, shares issued (in shares) | shares | 9,802,000 |  |  |  |  |  |
Aggregate principal amount | $ 100,000,000 |  |  |  |  |  |
Net operating loss obtained | $ 170,600,000 |  |  |  |  |  |
HighPoint Merger | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Proved oil and gas properties, measurement input | number | 0.13 |  |  |  |  |  |
HighPoint Merger | Former HighPoint Stockholders |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Common stock, shares issued (in shares) | shares | 487,952 |  |  |  |  |  |
HighPoint Merger | Shares of Bonanza Creek Common Stock |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Common stock, shares issued (in shares) | shares | 9,314,214 |  |  |  |  |  |
HighPoint Merger | Senior Notes | Senior Notes Due 2026, 7.50% |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Aggregate principal amount of Bonanza Creek 7.5% Senior Notes | $ 100,000,000 |  |  |  |  |  |
Interest rate | 7.50% |  |  |  |  |  |
HighPoint Merger | HighPoint Merger |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares | $ 0.001 |  |  |  |  |  |
HighPoint Merger | HighPoint Operating Company | Senior Notes | Senior Notes Due 2022 and Senior Notes Due 2025 |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Aggregate principal amount of Bonanza Creek 7.5% Senior Notes | $ 625,000,000 |  |  |  |  |  |
HighPoint Merger | HighPoint Operating Company | Senior Notes | Senior Notes Due 2022 |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Interest rate | 7.00% |  |  |  |  |  |
HighPoint Merger | HighPoint Operating Company | Senior Notes | Senior Notes Due 2025 |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Interest rate | 8.75% |  |  |  |  |  |
XOG Merger | Scenario, Forecast |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Annual dividend payments (in dollars per share) | $ / shares |  | $ 1.60 |  |  |  |  |
Crestone Peak Merger | Scenario, Forecast |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Annual dividend payments (in dollars per share) | $ / shares |  | $ 1.85 |  |  |  |  |
HighPoint Merger, XOG Merger, and Crestone Peak Merger |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Merger transaction costs |  |  | $ 5,600,000 |  | $ 27,100,000 |  |

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