Organization and Nature of Business	12 Months Ended
Dec. 31, 2018
ORGANIZATION AND NATURE OF BUSINESS [Abstract]
ORGANIZATION AND NATURE OF BUSINESS	NOTE 1. ORGANIZATION AND NATURE OF BUSINESS Harvest Oil & Gas Corp. is a newly formed Delaware corporation and the successor reporting company to EV Energy Partners, L.P. (“EVEP”) pursuant to Rule 15d-5 of the Securities Exchange Act of 1934, as amended. As used herein, the terms “Successor,” “Harvest” or the “Company” refer to Harvest Oil & Gas Corp. and its consolidated subsidiaries as a whole or on an individual basis, depending on the context in which the statements are made. When referring to the “Predecessor” or the “Partnership” in reference to the period prior to the emergence from bankruptcy, the intent is to refer to EVEP, the predecessor that was dissolved following the Effective Date (as defined below) of the Plan (as defined below) and its consolidated subsidiaries as a whole or on an individual basis, depending on the context in which the statements are made. Unless the context requires otherwise, references to: (i) the “Predecessor’s general partner” and “EV Energy GP” refer to EV Energy GP, L.P., a Delaware limited partnership, the Predecessor’s general partner, which was dissolved following the Effective Date of the Plan; (ii) “EV Management” refers to EV Management, LLC, a Delaware limited liability company, the former general partner of the Predecessor’s general partner; and (iii) “EnerVest” refers to EnerVest, Ltd., a Texas limited partnership, the owner of EV Management. Harvest is an independent oil and natural gas company that was formed in 2018, in connection with the reorganization of the Predecessor. The Predecessor was publicly traded from September 2006 to June 2018. As discussed further in Note 2, on April 2, 2018, EVEP, and 13 affiliated debtors (collectively, the “Debtors”) each filed a voluntary petition (the cases commenced thereby, the “Chapter 11 proceedings”) for relief under Chapter 11 of Title 11 of the United States Bankruptcy Code (“Chapter 11”) for bankruptcy protection in the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”) via Case No. 18-10814. The Debtors requested that their cases be jointly administered under Case No. 18-10814 to pursue the prepackaged plan of reorganization. During the pendency of the Chapter 11 proceedings, EVEP continued to operate its businesses and manage its properties under the jurisdiction of the Bankruptcy Court and in accordance with the applicable provisions of the Bankruptcy Code and orders of the Bankruptcy Court as a “Debtors-in-Possession.” On May 17, 2018, the Bankruptcy Court entered an order (the “Confirmation Order”) confirming the Debtors’ First Modified Joint Prepackaged Plan of Reorganization (as amended, modified and supplemented from time to time, the “Plan”). The Plan became effective on June 4, 2018 (the “Effective Date”), when all remaining conditions to the effectiveness of the Plan were satisfied and the Company emerged from bankruptcy. The Company operates one reportable segment engaged in the development and production of oil and natural gas properties, and all of its operations are located in the United States. As a result of the ongoing review of the Company’s asset base in order to maximize shareholder value, the Company has initiated processes to divest certain assets and in the future may look to divest additional assets or all of its remaining assets and use the proceeds to repay bank debt, return capital to shareholders, concentrate in existing positions or ventures into new basins. The oil and natural gas properties of Harvest are located in the Barnett Shale, the San Juan Basin, the Appalachian Basin (which includes the Utica Shale), Michigan, the Mid–Continent areas in Oklahoma, Texas, Arkansas, Kansas and Louisiana, the Permian Basin and the Monroe Field in Northern Louisiana. In the Notes to Consolidated Financial Statements, all dollar and share amounts in tabulations are in thousands of dollars and shares or units, respectively, unless otherwise indicated.

NOTE 1. ORGANIZATION AND NATURE OF BUSINESS

Harvest Oil & Gas Corp. is a newly formed Delaware corporation and the successor reporting company to EV Energy Partners, L.P. (“EVEP”) pursuant to Rule 15d-5 of the Securities Exchange Act of 1934, as amended. As used herein, the terms “Successor,” “Harvest” or the “Company” refer to Harvest Oil & Gas Corp. and its consolidated subsidiaries as a whole or on an individual basis, depending on the context in which the statements are made. When referring to the “Predecessor” or the “Partnership” in reference to the period prior to the emergence from bankruptcy, the intent is to refer to EVEP, the predecessor that was dissolved following the Effective Date (as defined below) of the Plan (as defined below) and its consolidated subsidiaries as a whole or on an individual basis, depending on the context in which the statements are made.

Unless the context requires otherwise, references to: (i) the “Predecessor’s general partner” and “EV Energy GP” refer to EV Energy GP, L.P., a Delaware limited partnership, the Predecessor’s general partner, which was dissolved following the Effective Date of the Plan; (ii) “EV Management” refers to EV Management, LLC, a Delaware limited liability company, the former general partner of the Predecessor’s general partner; and (iii) “EnerVest” refers to EnerVest, Ltd., a Texas limited partnership, the owner of EV Management.

Harvest is an independent oil and natural gas company that was formed in 2018, in connection with the reorganization of the Predecessor. The Predecessor was publicly traded from September 2006 to June 2018. As discussed further in Note 2, on April 2, 2018, EVEP, and 13 affiliated debtors (collectively, the “Debtors”) each filed a voluntary petition (the cases commenced thereby, the “Chapter 11 proceedings”) for relief under Chapter 11 of Title 11 of the United States Bankruptcy Code (“Chapter 11”) for bankruptcy protection in the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”) via Case No. 18-10814. The Debtors requested that their cases be jointly administered under Case No. 18-10814 to pursue the prepackaged plan of reorganization. During the pendency of the Chapter 11 proceedings, EVEP continued to operate its businesses and manage its properties under the jurisdiction of the Bankruptcy Court and in accordance with the applicable provisions of the Bankruptcy Code and orders of the Bankruptcy Court as a “Debtors-in-Possession.” On May 17, 2018, the Bankruptcy Court entered an order (the “Confirmation Order”) confirming the Debtors’ First Modified Joint Prepackaged Plan of Reorganization (as amended, modified and supplemented from time to time, the “Plan”). The Plan became effective on June 4, 2018 (the “Effective Date”), when all remaining conditions to the effectiveness of the Plan were satisfied and the Company emerged from bankruptcy.

The Company operates one reportable segment engaged in the development and production of oil and natural gas properties, and all of its operations are located in the United States. As a result of the ongoing review of the Company’s asset base in order to maximize shareholder value, the Company has initiated processes to divest certain assets and in the future may look to divest additional assets or all of its remaining assets and use the proceeds to repay bank debt, return capital to shareholders, concentrate in existing positions or ventures into new basins. The oil and natural gas properties of Harvest are located in the Barnett Shale, the San Juan Basin, the Appalachian Basin (which includes the Utica Shale), Michigan, the Mid–Continent areas in Oklahoma, Texas, Arkansas, Kansas and Louisiana, the Permian Basin and the Monroe Field in Northern Louisiana.

In the Notes to Consolidated Financial Statements, all dollar and share amounts in tabulations are in thousands of dollars and shares or units, respectively, unless otherwise indicated.