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Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2020
Accounting Policies [Abstract] |
Summary of Unaudited Pro Forma Financial Information |
| Pro Forma
| Three Months Ended September 30, 2019 |  | Nine Months Ended September 30, 2019
| (In thousands, except per share amounts)
Revenues: | $ | 247,192 |  |  | $ | 858,042 |
Net Income | $ | 36,755 |  |  | $ | 201,338 |
Net income per share: |  |  |
Basic | $ | 0.15 |  |  | $ | 0.93 |
Diluted | $ | 0.13 |  |  | $ | 0.72 |
Schedule of Business Acquisitions, by Acquisition | The following table summarizes the preliminary and final fair value allocations of the assets acquired and liabilities assumed in the Covey Park Acquisition:
| Original Allocation |  | Measurement Period Adjustments |  | Final Allocation
| (In thousands)
Consideration: |  |  |  |  |
Cash Paid | $ | 700,000 |  |  | $ | — |  |  | $ | 700,000 |
Fair Value of Common Stock Issued | 167,808 |  |  | — |  |  | 167,808 |
Fair Value of Series A Preferred Stock Issued | 200,000 |  |  | — |  |  | 200,000 |
Total Consideration | 1,067,808 |  |  | — |  |  | 1,067,808 |
Liabilities Assumed: |  |  |  |  |
Accounts Payable and Accrued Liabilities | 129,622 |  |  | — |  |  | 129,622 |
Derivative Financial Instruments | 388 |  |  | — |  |  | 388 |
Other Current Liabilities | 9,930 |  |  | 706 |  |  | 10,636 |
Long Term Debt | 826,625 |  |  | — |  |  | 826,625 |
Covey Park Preferred Equity | 153,390 |  |  | — |  |  | 153,390 |
Non-current Derivative Financial Instruments | 186 |  |  | — |  |  | 186 |
Asset Retirement Obligations | 5,374 |  |  | — |  |  | 5,374 |
Deferred Income Taxes | 23,466 |  |  | (1,780) |  |  | 21,686 |
Other Non-current Liabilities | 9,893 |  |  | — |  |  | 9,893 |
Liabilities Assumed | 1,158,874 |  |  | (1,074) |  |  | 1,157,800 |
Total Consideration and Liabilities Assumed | $ | 2,226,682 |  |  | $ | (1,074) |  |  | $ | 2,225,608 |
Assets Acquired: |  |  |  |  |
Cash and Cash Equivalents | $ | 6,131 |  |  | $ | — |  |  | $ | 6,131 |
Accounts Receivable | 86,285 |  |  | — |  |  | 86,285 |
Current Derivative Financial Instruments | 51,004 |  |  | — |  |  | 51,004 |
Other Current Assets | 5,511 |  |  | (554) |  |  | 4,957 |
Proved Oil and Natural Gas Properties | 1,818,413 |  |  | (520) |  |  | 1,817,893 |
Unproved Oil and Natural Gas Properties | 237,210 |  |  | — |  |  | 237,210 |
Other Property, Plant and Equipment | 2,262 |  |  | — |  |  | 2,262 |
Non-current Derivative Financial Instruments | 19,866 |  |  | — |  |  | 19,866 |
Total Assets Acquired | $ | 2,226,682 |  |  | $ | (1,074) |  |  | $ | 2,225,608 |
Summary of Lease Cost Recognized | Lease costs recognized during the three months and nine months ended September 30, 2020 were as follows:
| Three Months Ended September 30, 2020 |  | Nine Months Ended September 30, 2020
| (In thousands)
Operating lease cost included in general and administrative expense | $ | 422 |  |  | $ | 1,249 |
Operating lease cost included in lease operating expense | 229 |  |  | 578 |
Short-term lease cost (drilling rig costs included in proved oil and gas properties) | 7,324 |  |  | 26,605 |
| $ | 7,975 |  |  | $ | 28,432 |
Summary of Liabilities Under Contract Contain Operating Leases | As of September 30, 2020, expected future payments related to contracts that contain operating leases were as follows:
| (In thousands)
October 1 to December 31, 2020 | $ | 647 |
2021 | 2,329 |
2022 | 529 |
2023 | 182 |
Total lease payments | 3,687 |
Imputed interest | (133) |
Total lease liability | $ | 3,554 |
Summary of Accrued Costs | Accrued costs at September 30, 2020 and December 31, 2019 consisted of the following:
| As of September 30, 2020 |  | As of December 31, 2019
| (In thousands)
Accrued interest payable | $ | 38,910 |  |  | $ | 39,501 |
Accrued transportation costs | 25,465 |  |  | 26,907 |
Accrued capital expenditures | 25,422 |  |  | 42,193 |
Accrued lease operating expenses | 11,817 |  |  | 4,990 |
Accrued employee compensation | 6,508 |  |  | 8,653 |
Other | 3,485 |  |  | 4,092 |
Accrued transaction costs | 1,088 |  |  | 10,830 |
| $ | 112,695 |  |  | $ | 137,166 |
Summary of Changes in Reserve for Future Abandonment Costs | The following table summarizes the changes in Comstock's total estimated liability for such obligations during the periods presented:
| Nine Months Ended September 30,
| 2020 |  | 2019
| (In thousands)
Reserve for future abandonment costs at beginning of period | $ | 18,151 |  |  | $ | 5,136 |
New wells placed on production | 451 |  |  | 256 |
Wells acquired | — |  |  | 5,374 |
Liabilities settled and assets disposed of | (80) |  |  | (40) |
Accretion expense | 880 |  |  | 369 |
Reserve for future abandonment costs at end of period | $ | 19,402 |  |  | $ | 11,095 |
Schedule of Gas Derivative Contracts Volume and Prices | The Company had the following oil and natural gas price derivative financial instruments, excluding basis swaps which are discussed separately below, at September 30, 2020:
| Future Production Period
| Three Months Ending December 31, 2020 |  | Year Ending December 31, 2021 |  | Year Ending December 31, 2022 |  | Total
Natural Gas Swap Contracts: |  |  |  |  |  |  |
Volume (MMBtu) | 47,658,438 |  | (1) | 142,633,140 |  | (2) | 10,950,000 |  |  | 201,241,578 |
Average Price per MMBtu | $ | 2.63 |  | (1) | $ | 2.55 |  | (2) | $ | 2.53 |  |  | $ | 2.57 |
Natural Gas 2-Way Collar Contracts: |  |  |  |  |  |  |
Volume (MMBtu) | 8,720,000 |  |  | 109,550,000 |  |  | 3,600,000 |  |  | 121,870,000 |
Price per MMBtu: |  |  |  |  |  |  |
Average Ceiling | $ | 2.95 |  |  | $ | 2.93 |  |  | $ | 3.36 |  |  | $ | 2.94 |
Average Floor | $ | 2.43 |  |  | $ | 2.45 |  |  | $ | 2.50 |  |  | $ | 2.45 |
Natural Gas 3-Way Collar Contracts: |  |  |  |  |  |  |
Volume (MMBtu) | 4,600,000 |  |  | — |  |  | — |  |  | 4,600,000 |
Price per MMBtu: |  |  |  |  |  |  |
Average Ceiling | $ | 2.99 |  |  | — |  |  | — |  |  | $ | 2.99 |
Average Floor | $ | 2.63 |  |  | — |  |  | — |  |  | $ | 2.63 |
Average Put | $ | 2.32 |  |  | — |  |  | — |  |  | $ | 2.32 |
Natural Gas Swaptions Call Contracts: |  |  |  |  |  |  |
Volume (MMBtu) | — |  |  | 71,250,000 |  | (3) | 49,200,000 |  | (4) | 120,450,000 |
Average Price per MMBtu | — |  |  | $ | 2.52 |  | (3) | $ | 2.51 |  | (4) | $ | 2.52 |
Crude Oil Collar Contracts: |  |  |  |  |  |  |
Volume (Barrels) | 259,500 |  |  | 182,500 |  |  | — |  |  | 442,000 |
Price per Barrel: |  |  |  |  |  |  |
Average Ceiling | $ | 63.83 |  |  | $ | 45.00 |  |  | — |  |  | $ | 56.06 |
Average Floor | $ | 49.35 |  |  | $ | 40.00 |  |  | — |  |  | $ | 45.49 |
_____________________________ (1)For the three months ending December 31, 2020, natural gas price swap contracts include 19,320,000 MMBtu at an average price of $2.52 that are part of certain natural gas price swaption contracts which include a call to extend the price swap by the counterparty as described in (3) below. (2)For the year ending December 31, 2021, natural gas price swap contracts include 23,650,000 MMBtu at an average price of $2.52 that are part of certain natural gas price swaption contracts which include a call to extend the price swap by the counterparty as described in (4) below. (3)The counterparty has the right to exercise a call option to enter into a price swap with the Company on 71,250,000 MMBtu in 2021 at an average price of $2.52. The call option expires for 47,450,000 MMBtu at an average price of $2.53 in October 2020; for 7,300,000 MMBtu at an average price of $2.50 in November 2020 and for 16,500,000 MMBtu at an average price of $2.50 in March 2021. (4)The counterparty has the right to exercise a call option to enter into a price swap with the Company on 49,200,000 MMBtu in 2022 at an average price $2.51. The call option expires for 5,400,000 MMBtu at an average price of $2.50 in March 2021; for 36,500,000 MMBtu at an average price of $2.52 in October 2021 and 7,300,000 MMBtu at an average price of $2.50 in November 2021.
Schedule of Derivative Instruments | The aggregate fair value of the Company's derivative instruments reported in the accompanying consolidated balance sheets by type, including the classification between assets and liabilities, consists of the following:
Type |  | Consolidated Balance Sheet Location |  | September 30, 2020 |  | December 31, 2019
|  |  |  | (in thousands)
Asset Derivative Financial Instruments: |  |  |  |  |  |
Natural gas price derivatives |  | Derivative Financial Instruments – current |  | $ | 6,405 |  |  | $ | 75,123 |
Oil price derivatives |  | Derivative Financial Instruments – current |  | 2,425 |  |  | 181 |
|  |  |  | $ | 8,830 |  |  | $ | 75,304 |
Natural gas price derivatives |  | Derivative Financial Instruments – long-term |  | $ | 1,185 |  |  | $ | 13,888 |
Liability Derivative Financial Instruments: |  |  |  |  |  |
Natural gas price derivatives |  | Derivative Financial Instruments – current |  | $ | 62,652 |  |  | $ | — |
Oil price derivatives |  | Derivative Financial Instruments – current |  | — |  |  | 222 |
Interest rate derivatives |  | Derivative Financial Instruments – current |  | 943 |  |  | — |
|  |  |  | $ | 63,595 |  |  | $ | 222 |
Natural gas price derivatives |  | Derivative Financial Instruments – long-term |  | $ | 64,814 |  |  | $ | 4,220 |
Oil price derivatives |  | Derivative Financial Instruments – long-term |  | 20 |  |  | — |
Interest rate derivatives |  | Derivative Financial Instruments – long-term |  | 1,539 |  |  | — |
|  |  |  | $ | 66,373 |  |  | $ | 4,220 |
Schedule of Gains and Losses from Derivative Financial Instruments Assets (Liabilities) | Gains and losses related to cash settlements and changes in the fair value recognized on the Company's derivative contracts recognized in the consolidated statement of operations were as follows:
Gain (Loss) on Derivatives Recognized in Earnings |  | Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
|  | (In thousands)
Natural gas price derivatives |  | $ | (120,706) |  |  | $ | 22,664 |  |  | $ | (82,872) |  |  | $ | 37,722 |
Oil price derivatives |  | (989) |  |  | 2,194 |  |  | 13,529 |  |  | (5,777) |
Interest rate derivatives |  | 116 |  |  | — |  |  | (2,635) |  |  | — |
|  | $ | (121,579) |  |  | $ | 24,858 |  |  | $ | (71,978) |  |  | $ | 31,945 |
Consolidated Income Tax Provision | The following is an analysis of the consolidated income tax provision:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
| (In thousands)
Current - Federal | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Current - State | 67 |  |  | 72 |  |  | 216 |  |  | (22) |
Deferred - Federal | (35,645) |  |  | 3,184 |  |  | (37,662) |  |  | 13,959 |
Deferred - State | (10,545) |  |  | 591 |  |  | (8,731) |  |  | 1,246 |
| $ | (46,123) |  |  | $ | 3,847 |  |  | $ | (46,177) |  |  | $ | 15,183 |
Difference Between Federal Statutory Rate and Effective Tax Rate | The difference between the federal statutory rate of 21% and the effective tax rate is due to the following:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Tax at statutory rate | 21.0 | % |  | 21.0 | % |  | 21.0 | % |  | 21.0 | %
Tax effect of: |  |  |  |  |  |  |
Valuation allowance on deferred tax assets | 1.5 |  |  | 4.5 |  |  | 1.0 |  |  | 2.3 |
State income taxes, net of federal benefit | 5.2 |  |  | (1.8) |  |  | 4.3 |  |  | — |
Nondeductible stock-based compensation | (1.0) |  |  | 1.2 |  |  | (0.8) |  |  | 1.5 |
Transaction costs | — |  |  | 8.6 |  |  | — |  |  | 1.9 |
Other | — |  |  | 2.7 |  |  | 0.1 |  |  | — |
Effective tax rate | 26.7 | % |  | 36.2 | % |  | 25.6 | % |  | 26.7 | %
Reconciliation of Beginning and Ending Balances for Derivative Instruments | The following is a reconciliation of the beginning and ending balances for derivative instrument assets (liabilities) classified as Level 3 in the fair value hierarchy:
| Nine Months Ended September 30, 2020
| (In thousands)
Balance at beginning of year | $ | 4,351 |
Total loss included in earnings | (27,450) |
Settlements, net | (33,143) |
Balance at end of period | $ | (56,242) |
Summary of Carrying Amounts and Fair Values of Financial Instruments | The following presents the carrying amounts and the fair values of the Company's financial instruments as of September 30, 2020 and December 31, 2019:
| September 30, 2020 |  | December 31, 2019
| Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Assets: | (In thousands)
Derivative financial instruments (1) | $ | 10,015 |  |  | $ | 10,015 |  |  | $ | 89,192 |  |  | $ | 89,192 |
Liabilities: |  |  |  |  |  |  |
Derivative financial instruments (1) | $ | 129,968 |  |  | $ | 129,968 |  |  | $ | 4,442 |  |  | $ | 4,442 |
Bank credit facility (2) | $ | 500,000 |  |  | $ | 500,000 |  |  | $ | 1,250,000 |  |  | $ | 1,250,000 |
7½% senior notes due 2025 (3) | $ | 467,917 |  |  | $ | 586,882 |  |  | $ | 455,768 |  |  | $ | 534,375 |
9¾% senior notes due 2026 (3) | $ | 1,575,554 |  |  | $ | 1,687,125 |  |  | $ | 820,057 |  |  | $ | 765,000 |
______________ (1)The Company's natural gas price swaps and basis swap agreements, its interest rate swap agreements and its crude oil and natural gas price collars are classified as Level 2 and measured at fair value using a market approach using third party pricing services and other active markets or broker quotes that are readily available in the public markets. The Company's natural gas swaption contracts provide the counterparty the right, but not the obligation, to extend terms of an existing swap on predetermined dates. Due to subjectivity of the inputs used to value the counterparty rights in the contracts, these contracts are classified as Level 3 in the fair value hierarchy. (2)The carrying value of our floating rate debt outstanding approximates fair value. (3)The fair value of the Company's fixed rate debt was based on quoted prices as of September 30, 2020 and December 31, 2019, respectively, a Level 1 measurement.
Weighted Average Shares of Unvested Restricted Stock | Weighted average shares of unvested restricted stock outstanding were as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
| (in thousands)
Unvested restricted stock | 1,285 |  |  | 758 |  |  | 1,185 |  |  | 539 |
Common Stock and Convertible Stock Dilutive in Weighted average unearned PSUs outstanding | Weighted average unearned PSUs outstanding were as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
| (In thousands, except per unit amounts)
Weighted average PSUs | 1,136 |  |  | 862 |  |  | 1,014 |  |  | 513 |
Weighted average grant date fair value per unit | $ | 9.33 |  |  | $ | 9.60 |  |  | $ | 9.33 |  |  | $ | 9.60 |
Basic and Diluted Income (Loss) Per Share | Basic and diluted income (loss) per share were determined as follows:
| Three Months Ended September 30,
| 2020 |  | 2019
| Loss |  | Shares |  | Per Share |  | Income |  | Shares |  | Per Share
| (In thousands, except per share amounts)
Net income (loss) attributable to common stock | $ | (130,890) |  |  |  |  |  |  | $ | (1,337) |  |  |  |  |
Income allocable to unvested restricted shares | — |  |  |  |  |  |  | — |  |  |  |  |
Basic income (loss) attributable to common stock | (130,890) |  |  | 231,223 |  |  | $ | (0.57) |  |  | (1,337) |  |  | 171,487 |  |  | $ | (0.01) |
Diluted income (loss) attributable to common stock | $ | (130,890) |  |  | 231,223 |  |  | $ | (0.57) |  |  | $ | (1,337) |  |  | 171,487 |  |  | $ | (0.01) |
| Nine Months Ended September 30,
| 2020 |  | 2019
| Loss |  | Shares |  | Per Share |  | Income |  | Shares |  | Per Share
| (In thousands, except per share amounts)
Net income (loss) attributable to common stock | $ | (160,936) |  |  |  |  |  |  | $ | 33,645 |  |  |  |  |
Income allocable to unvested restricted shares | — |  |  |  |  |  |  | (141) |  |  |  |  |
Basic income (loss) attributable to common stock | (160,936) |  |  | 209,760 |  |  | $ | (0.77) |  |  | 33,504 |  |  | 127,709 |  |  | $ | 0.26 |
Diluted income (loss) attributable to common stock | $ | (160,936) |  |  | 209,760 |  |  | $ | (0.77) |  |  | $ | 33,504 |  |  | 127,709 |  |  | $ | 0.26 |
Cash Payments Made for Interest and Income Taxes | Cash payments made for interest and income taxes and other non-cash investing and financing activities for the nine months ended September 30, 2020 and 2019, respectively, were as follows:
| Nine Months Ended September 30,
| 2020 |  | 2019
| (In thousands)
Cash payments for: |  |  |
Interest payments | $ | 143,942 |  |  | $ | 110,820 |
Income tax payments | $ | — |  |  | $ | 2 |
Non-cash investing activities include: |  |  |
Decrease in accrued capital expenditures | $ | 16,771 |  |  | $ | 46,918 |
Non-cash investing activities related to the Covey Park Acquisition include: |  |  |
Issuance of common stock | $ | — |  |  | $ | 167,808 |
Issuance of Series A Convertible Preferred Stock | $ | — |  |  | $ | 200,000 |
Assumed 7½% Senior Notes due 2025 | $ | — |  |  | $ | 446,625 |
Acquired working capital | $ | 520 |  |  | $ | 41,624 |
Non-cash financing activities include: |  |  |
Retirement of debt in exchange for common stock | $ | (4,151) |  |  | $ | — |
Issuance of common stock in exchange for debt | $ | 5,012 |  |  | $ | — |

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