Summary of Significant Accounting Policies | Summary of Significant Accounting Policies Basis of Presentation. The accompanying Unaudited Consolidated Financial Statements include the accounts of the Company. These statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). All intercompany accounts and transactions have been eliminated in consolidation. In the opinion of management, the accompanying consolidated financial statements include all adjustments (consisting of normal recurring accruals and adjustments) necessary to present fairly, in all material respects, the Company’s interim results. However, operating results for the periods presented are not necessarily indicative of the results that may be expected for the full year. The Company’s Annual Report on Form 10-K for the year ended December 31, 2019 includes certain definitions and a summary of significant accounting policies and should be read in conjunction with this Quarterly Report on Form 10-Q. Except as disclosed herein, there have been no material changes to the information disclosed in the notes to the consolidated financial statements included in the Annual Report on Form 10-K. Use of Estimates. In the course of preparing the Company’s financial statements in accordance with GAAP, management makes various assumptions, judgments and estimates to determine the reported amount of assets, liabilities, revenues and expenses and in the disclosure of commitments and contingencies. Changes in these assumptions, judgments and estimates will occur as a result of the passage of time and the occurrence of future events and, accordingly, actual results could differ from amounts initially established. Areas requiring the use of assumptions, judgments and estimates relate to volumes of oil, natural gas and NGL reserves used in calculating depreciation, depletion and amortization (“DD&A”), the amount of expected future cash flows used in determining impairments of oil and gas properties and the amount of future capital costs used in these calculations. Assumptions, judgments and estimates also are required in determining the fair values of assets acquired and liabilities assumed in business combinations, asset retirement obligations, right-of-use assets and lease liabilities, deferred income taxes, the timing of dry hole costs, impairments of proved and unproved oil and gas properties and fair values of derivative instruments and stock-based payment awards. Further, these estimates and other factors, including those outside of the Company’s control, such as the impact of lower commodity prices, may have a significant adverse impact to the Company’s business, financial condition, results of operations and cash flows. Accounts Receivable. Accounts receivable is comprised of the following: As of June 30, 2020 As of December 31, 2019 (in thousands) Oil, gas and NGL sales $ 32,383 $ 50,171 Due from joint interest owners (1) 23,796 9,551 Other 3,129 2,419 Allowance for doubtful accounts (31) (21) Total accounts receivable $ 59,277 $ 62,120 (1) Includes $12.9 million associated with one joint interest partner. In the event of nonpayment, the Company expects to net the outstanding amount against certain revenues payable to this joint interest partner. Oil and Gas Properties. The following table sets forth the net capitalized costs and associated accumulated DD&A and non-cash impairments relating to the Company’s oil, natural gas and NGL producing activities: As of June 30, 2020 As of December 31, 2019 (in thousands) Proved properties $ 721,174 $ 725,964 Wells and related equipment and facilities 1,910,527 1,805,136 Support equipment and facilities 105,397 99,540 Materials and supplies 11,944 13,489 Total proved oil and gas properties $ 2,749,042 $ 2,644,129 Unproved properties 182,605 265,387 Wells and facilities in progress 60,704 92,406 Total unproved oil and gas properties, excluded from amortization $ 243,309 $ 357,793 Accumulated depreciation, depletion, amortization and impairment (2,224,428) (958,475) Total oil and gas properties, net $ 767,923 $ 2,043,447 The Company reviews proved oil and natural gas properties for impairment on a quarterly basis or whenever events and circumstances indicate that a decline in the recoverability of their carrying value may have occurred. The Company estimates the expected undiscounted future net cash flows of its oil and gas properties using proved and risked probable and possible reserves based on an analysis of quantitative and qualitative factors existing as of the balance sheet date including the Company’s development plans and best estimate of future production, commodity pricing, reserve risking, gathering and transportation deductions, production tax rates, lease operating expenses and future development costs. The Company compares such undiscounted future net cash flows to the carrying amount of the oil and gas properties to determine if the carrying amount is recoverable. If the undiscounted future net cash flows exceed the carrying amount of the oil and gas properties, no impairment is taken. If the carrying amount of a property exceeds the undiscounted future net cash flows, the Company will impair the carrying value to fair value. The factors used to determine fair value may include, but are not limited to, recent sales prices of comparable properties, indications from marketing activities, the present value of future revenues, net of estimated operating and development costs using estimates of reserves, future commodity pricing, future production estimates, anticipated capital expenditures, income taxes and various discount rates commensurate with the risk and current market conditions associated with realizing the projected cash flows. Unproved oil and gas properties are assessed periodically for impairment based on remaining lease terms, drilling results, reservoir performance, commodity price outlooks, future plans to develop acreage, recent sales prices of comparable properties and other relevant matters. In early 2020, global health care systems and economies began to experience strain from the spread of COVID-19, a highly transmissible and pathogenic coronavirus (the “COVID-19 pandemic”). As the virus spread, global economic activity began to slow and future economic activity was forecast to slow with a resulting decline in oil demand. In response, the Organization of Petroleum Exporting Countries (“OPEC”), along with non-OPEC oil-producing countries (collectively known as “OPEC+”), initiated discussions to lower production to support energy prices. With OPEC+ unable to agree on cuts, crude oil prices declined to an average of $30.45 per barrel for the month of March 2020, compared to an average of $59.80 per barrel for the month of December 2019. These events led to a decline in the recoverability of the carrying value of the Company’s oil and gas properties during the three months ended March 31, 2020. Since the carrying amount of the oil and gas properties was no longer recoverable, the Company impaired the carrying value to fair value. Therefore, the Company recognized non-cash impairment charges during the three months ended March 31, 2020, which were included within impairment and abandonment expense in the Unaudited Consolidated Statements of Operations. For the three months ended March 31, 2020, the Company contracted with an independent third party to assist the Company in the Company’s determination of fair value associated with the Company’s proved and unproved oil and gas properties. Through the use of the Company’s production and price forecast, the third party used the income valuation technique to assist the Company in the determination of fair value for the proved developed producing (“PDP”) and proved developed non-producing (“PDN”) reserves and a market approach utilizing sales prices of comparable properties to assist the Company in the determination of fair value of the proved undeveloped (“PUD”), probable (“PROB”) and possible (“POSS”) reserves. The Company’s impairment and abandonment expense for the three and six months ended June 30, 2020 and 2019 is summarized below: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (in thousands) Impairment of proved oil and gas properties $ — $ — $ 1,188,566 $ — Impairment of unproved oil and gas properties — — 76,298 — Abandonment expense 810 995 1,372 1,317 Total impairment and abandonment expense $ 810 $ 995 $ 1,266,236 $ 1,317 Accounts Payable and Accrued Liabilities. Accounts payable and accrued liabilities are comprised of the following: As of June 30, 2020 As of December 31, 2019 (in thousands) Accrued drilling, completion and facility costs $ 12,957 $ 25,667 Accrued lease operating, gathering, transportation and processing expenses 7,364 8,046 Accrued general and administrative expenses 6,910 6,612 Accrued interest payable 6,681 6,832 Trade payables 3,951 17,488 Operating lease liability 1,954 1,287 Other 2,260 5,706 Total accounts payable and accrued liabilities $ 42,077 $ 71,638 Environmental Liabilities. Environmental expenditures that relate to an existing condition caused by past operations and that do not contribute to current or future revenue generation are expensed. Environmental liabilities are accrued when environmental assessments and/or clean-ups are probable, and the costs can be reasonably estimated. Under Wyoming law, the Company is exposed to potential obligations for plugging and abandoning wells, and associated reclamation, for assets that were sold to other industry parties in prior years. When such third parties are unable to fulfill their contractual obligations to the Company as provided for in purchase and sale agreements, landowners, as well as the Bureau of Land Management, may demand that the Company perform such activities. Revenue Recognition. All of the Company’s sales of oil, gas and NGLs are made under contracts with customers, whereby revenues are recognized when the Company satisfies its performance obligations and the customer obtains control of the product. Performance obligations under the Company’s contracts with customers are typically satisfied at a point-in-time through monthly delivery of oil, gas and/or NGLs. Accordingly, at the end of the reporting period, the Company does not have any unsatisfied performance obligations. The Company’s contracts with customers typically include variable consideration based on monthly pricing tied to local indices and volumes delivered in the current month. The nature of the Company’s contracts with customers does not require the Company to constrain variable consideration for accounting purposes. As of June 30, 2020, the Company had open contracts with customers with terms of 1 month to 17 years, as well as evergreen contracts that renew on a periodic basis if not canceled by the Company or the customer. The Company’s contracts with customers typically require payment within one month of delivery. Under the Company’s contracts with customers, natural gas and its components, including NGLs, are either sold to a midstream entity (which processes the natural gas and subsequently sells the resulting residue gas and NGLs) or are sold to a gas or NGL purchaser after being processed by a third party for a fee. Regardless of the contract structure type, the terms of these contracts compensate the Company for the value of the residue gas and NGLs at current market prices for each product. The Company’s oil is sold to multiple oil purchasers at specific delivery points at or near the wellhead. All costs incurred to gather, transport and/or process the Company’s oil, gas and NGLs after control has transferred to the customer are considered components of the consideration received from the customer and therefore are recorded in oil, gas and NGL production revenues in the Unaudited Consolidated Statements of Operations. All costs incurred prior to the transfer of control to the customer are included in gathering, transportation and processing expense in the Unaudited Consolidated Statements of Operations. Gas imbalances from the sale of natural gas are recorded on the basis of gas actually sold by the Company. If the Company’s aggregate sales volumes for a well are greater (or less) than its proportionate share of production from the well, a liability (or receivable) is established to the extent there are insufficient proved reserves available to make-up the overproduced (or underproduced) imbalance. Imbalances were not significant in the periods presented. Derivative Instruments and Hedging Activities. The Company periodically uses derivative financial instruments to achieve a more predictable cash flow from its oil, natural gas and NGL sales by reducing its exposure to price fluctuations. Derivative instruments are recorded at fair market value and are included in the Unaudited Consolidated Balance Sheets as assets or liabilities. Income Taxes. Income taxes are provided for the tax effects of transactions reported in the financial statements and consist of taxes currently payable plus deferred income taxes related to certain income and expenses recognized in different periods for financial and income tax reporting purposes. Deferred income tax assets and liabilities represent the future tax return consequences of those differences, which will either be taxable or deductible when assets are recovered or liabilities are settled. Deferred income taxes also include tax credits and net operating losses that are available to offset future income taxes. Deferred income taxes are measured by applying currently enacted tax rates. A valuation allowance is recorded if it is more likely than not that all or some portion of the Company’s deferred tax assets will not be realized. The Company regularly assesses the realizability of the deferred tax assets considering all positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, planning strategies and results of recent operations. The assumptions about future taxable income require significant judgment to determine if a valuation allowance is required. Changes to the Company’s development plans, changes in market prices for hydrocarbons, changes in operating results, or other factors including changes in tax law could change the valuation allowance in future periods, resulting in recognition of a tax expense or benefit. The Company accounts for uncertainty in income taxes for tax positions taken or expected to be taken in a tax return. Only tax positions that meet the more-likely-than-not recognition threshold are recognized. The Company does not have any uncertain tax positions recorded as of June 30, 2020. Comprehensive Income. The Company has no elements of other comprehensive income, therefore, the Company’s net income (loss) on the Unaudited Consolidated Statements of Operations represents comprehensive income. Earnings/Loss Per Share. Basic net income (loss) per common share is calculated by dividing net income (loss) attributable to common stock by the weighted average number of common shares outstanding during each period. Diluted net income (loss) per common share is calculated by dividing net income (loss) attributable to common stock by the weighted average number of common shares outstanding and other dilutive securities. Potentially dilutive securities for the diluted net income per common share calculations consist of nonvested shares of common stock. The Company was in a net loss position for the three and six months ended June 30, 2020 and 2019; therefore, all potentially dilutive securities were anti-dilutive. The following table sets forth the calculation of basic and diluted income (loss) per share: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (in thousands, except per share amounts) Net income (loss) $ (67,628) $ (1,910) $ (1,083,267) $ (98,139) Basic weighted-average common shares outstanding in period 211,895 210,377 211,503 210,156 Diluted weighted-average common shares outstanding in period 211,895 210,377 211,503 210,156 Basic net income (loss) per common share $ (0.32) $ (0.01) $ (5.12) $ (0.47) Diluted net income (loss) per common share $ (0.32) $ (0.01) $ (5.12) $ (0.47) New Accounting Pronouncements. In April 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2020-04, Facilitation of the Effects of Reference Rate Reform on Financial Reporting . In response to the cessation of the London Interbank Offered Rate (“LIBOR”) by December 31, 2022, the FASB issued this update to provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other affected transactions. The Company currently has only one contract, its credit facility, that may be impacted by this ASU. Modifications of debt contracts should be accounted for by prospectively adjusting the effective interest rate. This update has an effective period of March 12, 2020 through December 31, 2022 and allows for elections to be made by the Company in terms of how the ASU is adopted. Once elected for a Topic or Industry Subtopic, the update must be applied prospectively for all eligible contract modifications for that Topic or Industry Subtopic. The Company does not believe the standard will have a material impact on the Company’s financial statements. In August 2018, the FASB issued ASU 2018-13, Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement . The objective of this update is to improve the effectiveness of fair value measurement disclosures. ASU 2018-13 is effective for annual periods beginning after December 15, 2019 and interim periods within those annual periods. The standard was adopted on January 1, 2020 and did not have a material impact on the Company’s disclosures. In June 2016, the FASB issued ASU 2016-13, Financial Instruments, Credit Losses |