Common Stock	12 Months Ended
Dec. 31, 2017
Stockholders' Equity Note [Abstract]
Common Stock	Common Stock On December 13, 2017, the Company completed a public offering of 32,000,000 shares of its common stock at a purchase price to the public of $9.55 per share. Net proceeds from the offering were $302.6 million, after deducting underwriting discounts and commissions, of which $0.3 million is included in common stock and $302.3 million is included in additional paid-in capital on the Company’s Consolidated Balance Sheets. The Company used the net proceeds to fund a portion of the Permian Basin Acquisition, but was initially used to repay borrowings from the Oasis Credit Facility prior to the close of the Permian Basin Acquisition. Upon closing on February 14, 2018, the Company also issued 46,000,000 shares of its common stock to Forge Energy to fund a portion of the Permian Basin Acquisition (see Note 9 – Acquisitions and Divestitures). On October 21, 2016, the Company completed a public offering of 55,200,000 shares of its common stock (including 7,200,000 shares issued pursuant to the underwriters’ option to purchase additional common stock) at a purchase price to the public of $10.80 per share. Net proceeds from the offering were $583.9 million, after deducting underwriting discounts and commissions and offering expenses, of which $0.6 million is included in common stock and $583.3 million is included in additional paid-in capital on the Company’s Consolidated Balance Sheets. The Company used the net proceeds to fund a portion of the Williston Basin Acquisition. On February 2, 2016, the Company completed a public offering of 39,100,000 shares of its common stock (including 5,100,000 shares issued pursuant to the underwriters’ option to purchase additional common stock) at an offering price of $4.685 per share. Net proceeds from the offering were $182.8 million, after deducting underwriting discounts and commissions and offering expenses, of which $0.4 million is included in common stock and $182.4 million is included in additional paid-in capital on the Company’s Consolidated Balance Sheets. The Company used the net proceeds for general corporate purposes. These public offerings were made pursuant to effective shelf registration statements on Forms S-3 filed with the SEC on July 15, 2014 and July 14, 2017, as applicable.

Common Stock

On December 13, 2017, the Company completed a public offering of 32,000,000 shares of its common stock at a purchase price to the public of $9.55 per share. Net proceeds from the offering were $302.6 million, after deducting underwriting discounts and commissions, of which $0.3 million is included in common stock and $302.3 million is included in additional paid-in capital on the Company’s Consolidated Balance Sheets. The Company used the net proceeds to fund a portion of the Permian Basin Acquisition, but was initially used to repay borrowings from the Oasis Credit Facility prior to the close of the Permian Basin Acquisition. Upon closing on February 14, 2018, the Company also issued 46,000,000 shares of its common stock to Forge Energy to fund a portion of the Permian Basin Acquisition (see Note 9 – Acquisitions and Divestitures).

On October 21, 2016, the Company completed a public offering of 55,200,000 shares of its common stock (including 7,200,000 shares issued pursuant to the underwriters’ option to purchase additional common stock) at a purchase price to the public of $10.80 per share. Net proceeds from the offering were $583.9 million, after deducting underwriting discounts and commissions and offering expenses, of which $0.6 million is included in common stock and $583.3 million is included in additional paid-in capital on the Company’s Consolidated Balance Sheets. The Company used the net proceeds to fund a portion of the Williston Basin Acquisition.

On February 2, 2016, the Company completed a public offering of 39,100,000 shares of its common stock (including 5,100,000 shares issued pursuant to the underwriters’ option to purchase additional common stock) at an offering price of $4.685 per share. Net proceeds from the offering were $182.8 million, after deducting underwriting discounts and commissions and offering expenses, of which $0.4 million is included in common stock and $182.4 million is included in additional paid-in capital on the Company’s Consolidated Balance Sheets. The Company used the net proceeds for general corporate purposes.

These public offerings were made pursuant to effective shelf registration statements on Forms S-3 filed with the SEC on July 15, 2014 and July 14, 2017, as applicable.