Goodwill	9 Months Ended
Sep. 30, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill	(5) GOODWILL During 2016, we recorded goodwill associated with the MRD Merger, which represents the cost of the acquired entity over the net amounts assigned to assets acquired and liabilities assumed. Goodwill is assessed for impairment whenever events or circumstances indicate that impairment of the carrying value of goodwill is likely, but no less often than annually. Our impairment test is typically performed during the fourth quarter; however, we performed an impairment test as of third quarter 2017 due to a significant decline of our market capitalization. Management utilized the assistance of a third-party valuation expert to determine the fair value of our business (our reporting unit). The fair value was determined based on both a market and an income approach. The fair value measurement using an income approach was based on internally developed estimates of future production levels, prices, drilling and operating costs and discount rates, which are Level 3 inputs. As a result of this measurement, the fair value of our business exceeded the carrying value of net assets and we did not record an impairment charge during third quarter 2017.

(5) GOODWILL

During 2016, we recorded goodwill associated with the MRD Merger, which represents the cost of the acquired entity over the net amounts assigned to assets acquired and liabilities assumed. Goodwill is assessed for impairment whenever events or circumstances indicate that impairment of the carrying value of goodwill is likely, but no less often than annually. Our impairment test is typically performed during the fourth quarter; however, we performed an impairment test as of third quarter 2017 due to a significant decline of our market capitalization. Management utilized the assistance of a third-party valuation expert to determine the fair value of our business (our reporting unit). The fair value was determined based on both a market and an income approach. The fair value measurement using an income approach was based on internally developed estimates of future production levels, prices, drilling and operating costs and discount rates, which are Level 3 inputs. As a result of this measurement, the fair value of our business exceeded the carrying value of net assets and we did not record an impairment charge during third quarter 2017.