10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)
þ	ANNUAL REPORT PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the fiscal year ended December 31, 2012 OR
¨	TRANSITION REPORT PURSUANT TO SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from             to

Commission File No. 001-03262

COMSTOCK RESOURCES, INC.

(Exact name of registrant as specified in its charter)

NEVADA	94-1667468
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

5300 Town and Country Blvd., Suite 500, Frisco, Texas 75034 (Address of principal executive offices including zip code)

(972) 668-8800

(Registrant’s telephone number and area code)

Securities registered pursuant to Section 12(b) of the Act:

Common Stock, $.50 Par Value	New York Stock Exchange
(Title of class)	(Name of exchange on which registered)

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes  þ    No  ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes  ¨    No  þ

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes  þ    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes  þ    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.     þ

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer  þ	Accelerated filer  ¨	Non-accelerated filer  ¨	Smaller reporting company  ¨
		(Do not check if smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2).    Yes  ¨     No  þ

As of February 28, 2013, there were 48,303,517 shares of common stock outstanding.

The aggregate market value of the common stock held by non-affiliates of the registrant, based on the closing price of common stock on the New York Stock Exchange on June 30, 2012 (the last business day of the registrant’s most recently completed second fiscal quarter), was $734.6 million.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Definitive Proxy Statement for the 2012 Annual Meeting of Stockholders

are incorporated by reference into Part III of this report.

COMSTOCK RESOURCES, INC.

ANNUAL REPORT ON FORM 10-K

For the Fiscal Year Ended December 31, 2012

CONTENTS

Item		Page
	Part I
	Cautionary Note Regarding Forward-Looking Statements		2
	Definitions		3
1. and 2.	Business and Properties		6
1A.	Risk Factors		31
1B.	Unresolved Staff Comments		41
3.	Legal Proceedings		41
4.	Mine Safety Disclosures		41
	Part II
5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities		42
6.	Selected Financial Data		43
7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		44
7A.	Quantitative and Qualitative Disclosures About Market Risk		54
8.	Financial Statements and Supplementary Data		54
9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure		55
9A.	Controls and Procedures		55
9B.	Other Information		59
	Part III
10.	Directors, Executive Officers and Corporate Governance		59
11.	Executive Compensation		59
12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters		59
13.	Certain Relationships and Related Transactions, and Directors Independence		60
14.	Principal Accountant Fees and Services		60
	Part IV
15.	Exhibits and Financial Statement Schedules		60

1

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

The information contained in this report includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements are identified by their use of terms such as “expect,” “estimate,” “anticipate,” “project,” “plan,” “intend,” “believe” and similar terms. All statements, other than statements of historical facts, included in this report, are forward-looking statements, including statements mentioned under “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” regarding:

• amount and timing of future production of oil and natural gas;

• the availability of exploration and development opportunities;

• amount, nature and timing of capital expenditures;

• the number of anticipated wells to be drilled after the date hereof;

• our financial or operating results;

• our cash flow and anticipated liquidity;

• operating costs including lease operating expenses, administrative costs and other expenses;

• finding and development costs;

• our business strategy; and

• other plans and objectives for future operations.

Any or all of our forward-looking statements in this report may turn out to be incorrect. They can be affected by a number of factors, including, among others:

• the risks described in “Risk Factors” and elsewhere in this report;

• the volatility of prices and supply of, and demand for, oil and natural gas;

• the timing and success of our drilling activities;

• the numerous uncertainties inherent in estimating quantities of oil and natural gas reserves and actual future production rates and associated costs;

• our ability to successfully identify, execute or effectively integrate future acquisitions;

• the usual hazards associated with the oil and natural gas industry, including fires, well blowouts, pipe failure, spills, explosions and other unforeseen hazards;

• our ability to effectively market our oil and natural gas;

• the availability of rigs, equipment, supplies and personnel;

• our ability to discover or acquire additional reserves;

• our ability to satisfy future capital requirements;

• changes in regulatory requirements;

• general economic conditions, status of the financial markets and competitive conditions;

• our ability to retain key members of our senior management and key employees; and

• hostilities in the Middle East and other sustained military campaigns and acts of terrorism or sabotage that impact the supply of crude oil and natural gas.

2

DEFINITIONS

The following are abbreviations and definitions of terms commonly used in the oil and gas industry and this report. Natural gas equivalents and crude oil equivalents are determined using the ratio of six Mcf to one barrel. All references to “us,” “our,” “we” or “Comstock” mean the registrant, Comstock Resources, Inc. and where applicable, its consolidated subsidiaries.

“Bbl” means a barrel of U.S. 42 gallons of oil.

“Bcf” means one billion cubic feet of natural gas.

“Bcfe” means one billion cubic feet of natural gas equivalent.

“BOE” means one barrel of oil equivalent.

“Btu” means British thermal unit, which is the quantity of heat required to raise the temperature of one pound of water from 58.5 to 59.5 degrees Fahrenheit.

“Completion” means the installation of permanent equipment for the production of oil or gas.

“Condensate” means a hydrocarbon mixture that becomes liquid and separates from natural gas when the gas is produced and is similar to crude oil.

“Development well” means a well drilled within the proved area of an oil or gas reservoir to the depth of a stratigraphic horizon known to be productive.

“Dry hole” means a well found to be incapable of producing hydrocarbons in sufficient quantities such that proceeds from the sale of such production exceed production expenses and taxes.

“Exploratory well” means a well drilled to find and produce oil or natural gas reserves not classified as proved, to find a new productive reservoir in a field previously found to be productive of oil or natural gas in another reservoir or to extend a known reservoir.

“GAAP” means generally accepted accounting principles in the United States of America.

“Gross” when used with respect to acres or wells, production or reserves refers to the total acres or wells in which we or another specified person has a working interest.

“MBbls” means one thousand barrels of oil.

“MBbls/d” means one thousand barrels of oil per day.

“Mcf” means one thousand cubic feet of natural gas.

“Mcfe” means one thousand cubic feet of natural gas equivalent.

“MMBbls” means one million barrels of oil.

“MMBOE” means one million barrels of oil equivalent.

“MMBtu” means one million British thermal units.

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“MMcf” means one million cubic feet of natural gas.

“MMcf/d” means one million cubic feet of natural gas per day.

“MMcfe/d” means one million cubic feet of natural gas equivalent per day.

“MMcfe” means one million cubic feet of natural gas equivalent.

“Net” when used with respect to acres or wells, refers to gross acres of wells multiplied, in each case, by the percentage working interest owned by us.

“Net production” means production we own less royalties and production due others.

“Oil” means crude oil or condensate.

“Operator” means the individual or company responsible for the exploration, development, and production of an oil or gas well or lease.

“PV 10 Value” means the present value of estimated future revenues to be generated from the production of proved reserves calculated in accordance with the Securities and Exchange Commission guidelines, net of estimated production and future development costs, using prices and costs as of the date of estimation without future escalation, without giving effect to non-property related expenses such as general and administrative expenses, debt service, future income tax expense and depreciation, depletion and amortization, and discounted using an annual discount rate of 10%. This amount is the same as the standardized measure of discounted future net cash flows related to proved oil and natural gas reserves except that it is determined without deducting future income taxes. Although PV 10 Value is not a financial measure calculated in accordance with GAAP, management believes that the presentation of PV 10 Value is relevant and useful to our investors because it presents the discounted future net cash flows attributable to our proved reserves prior to taking into account corporate future income taxes and our current tax structure. We use this measure when assessing the potential return on investment related to our oil and gas properties. Because many factors that are unique to any given company affect the amount of estimated future income taxes, the use of a pre-tax measure is helpful to investors when comparing companies in our industry.

“Proved developed reserves” means reserves that can be expected to be recovered through existing wells with existing equipment and operating methods. Additional oil and gas expected to be obtained through the application of fluid injection or other improved recovery techniques for supplementing the natural forces and mechanisms of primary recovery will be included as “proved developed reserves” only after testing by a pilot project or after the operation of an installed program has confirmed through production response that increased recovery will be achieved.

“Proved developed non-producing” means reserves (i) expected to be recovered from zones capable of producing but which are shut-in because no market outlet exists at the present time or whose date of connection to a pipeline is uncertain or (ii) currently behind the pipe in existing wells, which are considered proved by virtue of successful testing or production of offsetting wells.

“Proved developed producing” means reserves expected to be recovered from currently producing zones under continuation of present operating methods. This category may also include recently completed shut-in gas wells scheduled for connection to a pipeline in the near future.

“Proved reserves” means the estimated quantities of crude oil, natural gas, and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable in future

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years from known reservoirs under existing economic and operating conditions, i.e., prices and costs as of the date the estimate is made. Prices include consideration of changes in existing prices provided only by contractual arrangements, but not on escalations based upon future conditions.

“Proved undeveloped reserves” means reserves that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for recompletion. Reserves on undrilled acreage shall be limited to those drilling units offsetting productive units that are reasonably certain of production when drilled. Proved reserves for other undrilled units can be claimed only where it can be demonstrated with certainty that there is continuity of production from the existing productive formation. Under no circumstances are estimates for proved undeveloped reserves attributable to any acreage for which an application of fluid injection or other improved recovery technique is contemplated, unless such techniques have been proved effective by actual tests in the area and in the same reservoir.

“Recompletion” means the completion for production of an existing well bore in another formation from which the well has been previously completed.

“Reserve life” means the calculation derived by dividing year-end reserves by total production in that year.

“Reserve replacement” means the calculation derived by dividing additions to reserves from acquisitions, extensions, discoveries and revisions of previous estimates in a year by total production in that year.

“Royalty” means an interest in an oil and gas lease that gives the owner of the interest the right to receive a portion of the production from the leased acreage (or of the proceeds of the sale thereof), but generally does not require the owner to pay any portion of the costs of drilling or operating the wells on the leased acreage. Royalties may be either landowner’s royalties, which are reserved by the owner of the leased acreage at the time the lease is granted, or overriding royalties, which are usually reserved by an owner of the leasehold in connection with a transfer to a subsequent owner.

“3-D seismic” means an advanced technology method of detecting accumulations of hydrocarbons identified by the collection and measurement of the intensity and timing of sound waves transmitted into the earth as they reflect back to the surface.

“Tcfe” means one trillion cubic feet of natural gas equivalent.

“Working interest” means an interest in an oil and gas lease that gives the owner of the interest the right to drill for and produce oil and gas on the leased acreage and requires the owner to pay a share of the costs of drilling and production operations. The share of production to which a working interest owner is entitled will always be smaller than the share of costs that the working interest owner is required to bear, with the balance of the production accruing to the owners of royalties. For example, the owner of a 100% working interest in a lease burdened only by a landowner’s royalty of 12.5% would be required to pay 100% of the costs of a well but would be entitled to retain 87.5% of the production.

“Workover” means operations on a producing well to restore or increase production.

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PART I

ITEMS 1. and 2.    BUSINESS AND PROPERTIES

We are a Nevada corporation engaged in the acquisition, development, production and exploration of oil and natural gas. Our common stock is listed and traded on the New York Stock Exchange.

Our oil and gas operations are concentrated in East Texas/North Louisiana, South Texas and West Texas. Our oil and natural gas properties are estimated to have proved reserves of 711.9 Bcfe with an estimated PV 10 Value of $1.0 billion as of December 31, 2012 and a standardized measure of discounted future net cash flows of $0.8 billion. Our consolidated proved oil and natural gas reserve base is 67% natural gas and 33% oil. Our proved reserves are 62% developed on a Bcfe basis as of December 31, 2012.

Our proved reserves at December 31, 2012 and our 2012 average daily production are summarized below:

	Reserves at December 31, 2012									2012 Average Daily Production
	Oil (MMBbls)		Natural     Gas (Bcf)		Total      (Bcfe)		% of     Total			Oil   (MBbls/d)		Natural Gas (MMcf/d)		Total (MMcfe/d)		% of     Total
East Texas / North Louisiana		0.4		339.4		341.9		48.0	%		0.2		194.2		195.6		74.3	%
South Texas		18.4		86.2		196.5		27.6	%		4.6		23.6		51.1		19.4	%
West Texas		20.3		39.2		161.1		22.6	%		1.4		2.0		10.5		4.0	%
Other Regions		0.1		11.8		12.4		1.8	%		0.1		5.6		6.1		2.3	%
Total		39.2		476.6		711.9		100.0	%		6.3		225.4		263.3		100.0	%

Strengths

High Quality Properties.    Our operations are focused in three primary operating areas: East Texas/North Louisiana, South Texas and West Texas. Our properties have an average reserve life of approximately 7.4 years and have extensive development and exploration potential. In response to the continuing low natural gas price environment, we have focused our drilling activity primarily on oil projects. Our two primary properties that provide opportunities to increase our oil production and reserves are our South Texas Eagle Ford shale properties and our Wolfbone field in West Texas. We have 34,727 acres (27,689 net to us) in the Eagle Ford shale and we have 88,666 acres (54,355 net to us) in West Texas prospective in the Bone Spring and Wolfcamp shales. Our properties in the East Texas/North Louisiana region, including 93,620 acres (80,046 net to us) in the Haynesville or Bossier shales, are primarily prospective for natural gas.

Successful Exploration and Development Program.    In 2012 we spent $524.9 million, net of reimbursed costs from our joint venture partner, on exploration and development activities. We drilled 85 wells (54.2 net to us) in 2012 at a cost of $415.1 million and we spent $70.9 million to complete 20 wells (13.6 net to us) that were drilled in 2011. We also spent $35.1 million in 2012 to acquire additional leasehold, $0.1 million to acquire seismic data and $3.7 million for recompletions, workovers, abandonment and production facilities. 80% of our 2012 capital expenditures were directed towards oil projects. Our drilling activities in 2012 added 22.5 MMBOE to our proved reserves and increased our oil production by 175% from 2011.

Efficient Operator.    We operated 90% of our proved oil and natural gas reserve base as of December 31, 2012. As operator we are better able to control operating costs, the timing and plans for

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future development, the level of drilling and lifting costs and the marketing of production. As an operator, we receive reimbursements for overhead from other working interest owners, which reduces our general and administrative expenses.

Successful Acquisitions.    We have had significant growth over the years as a result of our acquisition activity. We apply strict economic and reserve risk criteria in evaluating acquisitions. Over the last twenty years, we have added 1.1 Tcfe of proved oil and natural gas reserves from 38 acquisitions at an average cost of $1.17 per Mcfe. Our application of strict economic and reserve risk criteria have enabled us to successfully evaluate and integrate acquisitions.

Business Strategy

Pursue Exploration Opportunities.    We conduct exploration activities to grow our reserve base and to replace our production each year. During 2012 we refocused our efforts on prospects with potential for oil development, and we have limited our drilling on our natural gas properties due to the decline in natural gas prices.

From 2010 through 2012 we spent approximately $155.2 million to acquire 34,727 acres (27,689 net to us) in South Texas, which we believe to be prospective for oil in the Eagle Ford shale formation. In 2012, we spent approximately $201.7 million to drill 30 wells (20.5 net to us) on our Eagle Ford shale properties. In 2012 we entered into a joint venture arrangement to allow us to accelerate the development of our acreage. Our joint venture partner participates for a one-third interest in the wells that we drill in exchange for paying $25,000 per net acre that is earned by their participation. In 2012, our Eagle Ford shale drilling program added 13.2 MMBOE to our proved reserves. In 2013 we have budgeted to spend $219.0 million, net of reimbursements from our joint venture partner, to drill 42 wells (27.3 net to us) on our Eagle Ford shale properties and to complete six wells (3.8 net to us) that were drilled in 2012.

We have spent approximately $340.0 million to acquire 68,764 acres (41,071 net to us) in Reeves County in West Texas, which we believe to be prospective for oil in the Bone Spring and Wolfcamp shales in the Delaware Basin. During 2012 we spent $183.4 million and drilled 48 wells (30.5 net to us) in West Texas. Our drilling program added 6.9 MMBOE to our reserves in 2012. In 2013 we have budgeted $168.9 million to drill 33 wells (27.2 net to us), including eight horizontal Wolfcamp shale wells (7.3 net to us).

We have a significant acreage position of 93,620 acres (80,046 net to us) in East Texas and North Louisiana with Haynesville or Bossier shale natural gas potential but in 2012 we have deferred most of our drilling operations due to the low natural gas price environment. In 2012, we drilled seven Haynesville and Bossier shale horizontal wells (3.2 net to us) which added 14 Bcfe to our proved reserves in 2012. With the low natural gas price outlook in 2013, we continue to defer our natural gas focused drilling. We have budgeted to spend $32.1 million in 2013 to drill ten Haynesville and Bossier shale horizontal wells (3.6 net to us).

Exploit Existing Reserves.    We seek to maximize the value of our oil and gas properties by increasing production and recoverable reserves through development drilling and workover, recompletion and exploitation activities. We utilize advanced industry technology, including 3-D seismic data, horizontal drilling, improved logging tools, and formation stimulation techniques.

Maintain Flexible Capital Expenditure Budget.    The timing of most of our capital expenditures is discretionary because we have not made any significant long-term capital expenditure commitments except for contracted drilling and completion services. We operate most of the drilling projects in which we participate. Consequently, we have a significant degree of flexibility to adjust the level of such

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expenditures according to market conditions. We have budgeted to spend approximately $420.0 million in 2013 on our development and exploration projects and $25.0 million for lease acquisition activity.

Acquire High Quality Properties at Attractive Costs.    Historically, we have had a successful track record of increasing our oil and natural gas reserves through opportunistic acquisitions. Over the last twenty years, we have added 1.1 Tcfe of proved oil and natural gas reserves from 38 acquisitions at a total cost of $1.3 billion, or $1.17 per Mcfe. The acquisitions were acquired at an average of 67% of their PV 10 Value in the year the acquisitions were completed. In evaluating acquisitions, we apply strict economic and reserve risk criteria. We target properties in our core operating areas with established production and low operating costs that also have potential opportunities to increase production and reserves through exploration and exploitation activities. We also evaluate our existing properties and consider divesting of non-strategic assets when market conditions are favorable.

Primary Operating Areas

The following table summarizes the estimated proved oil and natural gas reserves for our fifteen largest field areas as of December 31, 2012:

	Oil (MBbls)		Natural Gas (MMcf)		Total (MMcfe)(1)		%			PV 10  Value(2) (000’s)			%
East Texas / North Louisiana:
Logansport		15		212,172		212,263		29.8	%	$	123,779			12.1	%
Toledo Bend		—		44,965		44,965		6.3	%		27,810			2.7	%
Beckville		125		31,130		31,880		4.5	%		28,357			2.8	%
Waskom		98		14,207		14,798		2.1	%		14,365			1.4	%
Blocker		46		10,901		11,175		1.6	%		9,351			0.9	%
Mansfield		—		8,614		8,614		1.2	%		4,990			0.5	%
Darco		12		3,845		3,919		0.6	%		2,136			0.2	%
Douglass		—		2,995		2,995		0.4	%		976			0.1	%
Other		117		10,560		11,256		1.5	%		9,240			0.8	%
		413		339,389		341,865		48.0	%		221,004			21.5	%
South Texas:
Eagleville		18,281		14,051		123,739		17.4	%		532,714			51.9	%
Fandango		—		37,274		37,274		5.2	%		19,782			1.9	%
Rosita		—		16,295		16,296		2.3	%		6,601			0.6	%
Javelina		39		7,809		8,046		1.1	%		9,759			1.0	%
Las Hermanitas		—		4,482		4,483		0.6	%		2,300			0.2	%
Other		61		6,335		6,696		1.0	%		6,768			0.7	%
		18,381		86,246		196,534		27.6	%		577,924			56.3	%
West Texas:
Wolfbone		20,320		39,155		161,073		22.6	%		212,186			20.7	%
		20,320		39,155		161,073		22.6	%		212,186			20.7	%
Other:
San Juan Basin		12		3,311		3,381		0.5	%		4,107			0.4	%
Other		93		8,499		9,064		1.3	%		11,309			1.1	%
		105		11,810		12,445		1.8	%		15,416			1.5	%
Total		39,219		476,600		711,917		100.0	%		1,026,530			100.0	%
Discounted Future Income Taxes											(242,313	)
Standardized Measure of Discounted Future Cash Flows										$	784,217

(1) Oil is converted to natural gas equivalents by using a conversion factor of one barrel of oil for six Mcf of natural gas.

(2) The PV 10 Value represents the discounted future net cash flows attributable to our proved oil and gas reserves before income tax, discounted at 10%. Although it is a non-GAAP measure, we believe that the presentation of the PV 10 Value is relevant and useful to our investors because it presents the discounted future net cash flows attributable to our proved reserves prior to taking into account corporate future income taxes and our current tax structure. We use this measure when assessing the potential return on investment related to our oil and gas properties. The standardized measure of discounted future net cash flows represents the present value of future cash flows attributable to our proved oil and natural gas reserves after income tax, discounted at 10%.

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East Texas/North Louisiana Region

Approximately 48% or 341.9 Bcfe of our proved reserves are located in East Texas and North Louisiana where we own interests in 958 producing wells (585.8 net to us) in 28 field areas. We operate 664 of these wells. The largest of our fields in this region are the Logansport, Toledo Bend, Beckville, Waskom, Blocker, Mansfield, Darco and Douglass fields. Production from this region averaged 194 MMcf of natural gas per day and 220 barrels of oil per day during 2012 or 196 MMcfe per day. Most of the reserves in this area produce from the upper Jurassic aged Haynesville or Bossier shale or Cotton Valley formations and the Cretaceous aged Travis Peak/Hosston formation. In 2012, we spent $101.1 million drilling seven wells (3.2 net to us) and completing 16 wells (10.4 net to us) that were drilled in 2011. We also spent $8.2 million on leasehold costs and $1.7 million on workovers and recompletions in this region. All seven of the wells we drilled in 2012 were horizontal wells that targeted the Haynesville or Bossier shales. We plan to spend approximately $32.1 million in 2013 in this region to drill ten (3.6 net to us) horizontal wells targeting the Haynesville or Bossier shales. These wells are required to retain our interest in certain undeveloped leases.

Logansport

The Logansport field located in DeSoto Parish, Louisiana primarily produces from the Haynesville and Bossier shale formations at a depth of 11,100 to 11,500 feet and from multiple sands in the Cotton Valley and Hosston formations at an average depth of 8,000 feet. Our proved reserves of 212.3 Bcfe in the Logansport field represent approximately 30% of our proved reserves. We own interests in 254 wells (163.2 net to us) and operate 180 of these wells in this field. During December 2012 net daily production attributable to our interest from this field averaged 94 MMcf of natural gas and 20 barrels of oil. In 2012 we completed ten Haynesville or Bossier shale horizontal wells (8.2 net to us) in Logansport that were drilled in 2011. In 2013 we plan to drill three horizontal Haynesville or Bossier shale wells (0.6 net to us) in our Logansport field.

Toledo Bend

The Toledo Bend field in Desoto and Sabine Parishes, Louisiana was discovered in 2008 with our first horizontal Haynesville shale well. Production from the Haynesville shale in the Toledo Bend field ranges from 11,400 to 11,800 feet and from 10,880 to 11,300 feet in the Bossier shale. Our proved reserves of 45 Bcfe in the Toledo Bend field represent approximately 6% of our reserves. We own interests in 72 producing wells (37.3 net to us) and operate 39 of these wells in this field. During 2012 we drilled four Haynesville or Bossier shale horizontal wells (1.3 net to us) at Toledo Bend and we completed six wells (2.1 net to us) that were drilled in 2011. During December 2012, net daily production attributable to our interest from this field averaged 35 MMcf of natural gas. In 2013, we plan to drill five horizontal Haynesville or Bossier shale wells (2.6 net to us) in this field.

Beckville

The Beckville field, located in Panola and Rusk Counties, Texas, has estimated proved reserves of 31.9 Bcfe which represents approximately 5% of our proved reserves. We operate 192 wells in this field and own interests in 81 additional wells for a total of 273 wells (160.4 net to us). During December 2012, production attributable to our interest from this field averaged 8 MMcf of natural gas per day and 40 barrels of oil per day. The Beckville field produces primarily from the Cotton Valley formation at depths ranging from 9,000 to 10,000 feet. The field is also prospective for future Haynesville shale development.

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Waskom

The Waskom field, located in Harrison and Panola Counties in Texas, represents approximately 2% (14.8 Bcfe) of our proved reserves as of December 31, 2012. We own interests in 63 wells in this field (40.5 net to us) and operate 48 wells in this field. During December 2012, net daily production attributable to our interest averaged 5 MMcf of natural gas and 20 barrels of oil from this field. The Waskom field produces from the Cotton Valley formation at depths ranging from 9,000 to 10,000 feet and from the Haynesville shale formation at depths of 10,800 to 10,900 feet.

Blocker

Our proved reserves of 11.2 Bcfe in the Blocker field located in Harrison County, Texas represent approximately 2% of our proved reserves. We own interests in 77 wells (71.0 net to us) and operate 71 of these wells. During December 2012, net daily production attributable to our interest from this field averaged 4 MMcf of natural gas and 22 barrels of oil. Most of this production is from the Cotton Valley formation between 8,600 and 10,150 feet and the Haynesville shale formation between 11,100 and 11,450 feet.

Mansfield

The Mansfield field is located in DeSoto Parish Louisiana and produces from the Haynesville shale between 12,250 and 12,350 feet. We own interests in 17 wells (4.6 net to us) and operate four of these wells. Our proved reserves in this field of 8.6 Bcfe represent approximately 1% of our total reserves. During December 2012, net daily production attributable to our interest for this field averaged 4 MMcf of natural gas. In 2013, we plan to drill two (0.4 net to us) horizontal Haynesville shale wells in this field.

Darco

The Darco field is located in Harrison County, Texas and produces from the Cotton Valley formation at depths from approximately 9,800 to 10,200 feet. Our proved reserves of 3.9 Bcfe in the Darco field represent approximately 1% of our reserves. We own interests in 23 wells (18 net to us) and operate all of these wells. During December 2012, net daily production attributable to our interest from this field averaged 1 MMcf of natural gas.

Douglass

The Douglass field is located in Nacogdoches County, Texas and is productive from stratigraphically trapped reservoirs in the Pettet Lime and Travis Peak formations. These reservoirs are found at depths from 9,200 to 10,300 feet. Our proved reserves of 3.0 Bcfe in the Douglass field represent less than 1% of our reserves. We own interests in 40 wells (25.8 net to us) and operate 33 of these wells. During December 2012, net daily production attributable to our interest from this field averaged 1 MMcf of natural gas.

South Texas Region

Approximately 28%, or 32.8 MMBOE (196.5 Bcfe,) of our proved reserves are located in South Texas, where we own interests in 191 producing wells (116.6 net to us). We own interests in 16 field areas in the region, the largest of which are the Eagleville, Fandango, Rosita, Javelina and Las Hermanitas fields. Net daily production rates from this region averaged 4,587 barrels of oil and 24 MMcf

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of natural gas during 2012 or 8,521 BOE per day. We spent $202.9 million in 2012, net of cost recoveries from our joint venture partner, to drill 30 (20.5 net to us) Eagle Ford shale wells and for other development activity. We also spent $7.7 million in this region in 2012 to acquire acreage. In 2013 we plan to spend approximately $219.0 million to drill 42 horizontal wells (27.3 net to us) and to complete six Eagle Ford shale wells (3.8 net to us) that were drilled in 2012.

Eagleville

We have 34,727 acres (27,689 net to us) in McMullen, La Salle, Atascosa, Wilson and Karnes Counties which are prospective for Eagle Ford shale development in South Texas. The Eagle Ford Shale is found between 7,500 feet and 11,500 feet across our acreage position. During December 2012 we had 49 wells (40.5 net to us) that were producing a total of 4,023 barrels of oil per day and 2.4 MMcf per day of natural gas net to our interest or 4,418 BOE per day. Our proved reserves in this field are estimated to be 20.6 MMBOE (123.7 Bcfe) (89% oil) and represent 17% of our total proved reserves. All of our planned South Texas drilling activity in 2013 will be in the Eagleville field.

Fandango

We own interests in 20 wells (20.0 net to us) in the Fandango field, located in Zapata County, Texas. We operate all of these wells which produce from the Wilcox formation at depths from approximately 13,000 to 18,000 feet. Our proved reserves of 37.3 Bcfe in this field represent approximately 5% of our total proved reserves. Production from this field averaged 9 MMcf of natural gas per day during December 2012.

Rosita

We own interests in 30 wells (16.2 net to us) in the Rosita field, located in Duval County, Texas. We operate four of these wells which produce from the Wilcox formation at depths from approximately 9,300 to 17,000 feet. Our proved reserves of 16.3 Bcfe in this field represent approximately 2% of our total proved reserves. Production from this field averaged 3 MMcf of natural gas per day during December 2012.

Javelina

We own interests in and operate 18 wells (18.0 net to us) in the Javelina field in Hidalgo County in South Texas. These wells produce primarily from the Vicksburg formation at a depth of approximately 10,900 to 12,500 feet. Proved reserves attributable to our interests in the Javelina field are 8.0 Bcfe, which represents 1% of our total proved reserves. During December 2012, production attributable to our interest from this field averaged 3 MMcf of natural gas per day and 21 barrels of oil per day.

Las Hermanitas

We own interests in and operate 11 natural gas wells (9.0 net to us) in the Las Hermanitas field, located in Duval County, Texas. These wells produce from the Wilcox formation at depths from approximately 11,400 to 11,800 feet. Our proved reserves of 4.5 Bcfe in this field represent approximately 1% of our total proved reserves. During December 2012, net daily production attributable to our interest from this field averaged 2 MMcf of natural gas.

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West Texas Region

Wolfbone

We own interests in 68,764 acres (41,071 net to us) in Reeves County in the Delaware Basin in West Texas that are prospective for the Bone Spring formation from depths of 10,000 to 10,300 feet and the Wolfcamp shale formation from depths of 10,300 to 11,500 feet, most of which was acquired by us in 2011. Our proved reserves of 26.8 MMBOE (161.1 Bcfe) in the Wolfbone field are 76% oil and represent 23% of our total proved reserves. Net daily production rates from this region averaged 1,410 barrels of oil and 2 MMcf of natural gas during 2012 or 1,744 BOE per day. During 2012 we spent $183.9 million to drill 48 (30.5 net to us) oil wells and for other development activity. We also spent $19.2 million in this region in 2012 to acquire acreage. In 2013 we have budgeted to spend $168.9 million to drill 33 wells (27.2 net to us) in this region and to complete three wells (1.0 net to us) drilled in 2012.

Other Regions

Approximately 2%, or 12.4 Bcfe, of our proved reserves are in other regions, primarily in New Mexico and the Mid-Continent region. We own interests in 421 producing wells (161.0 net to us) in 20 fields within these regions. The field with the largest proved reserves is our San Juan Basin properties in New Mexico. Net daily production from our other regions during 2012 totaled 6 MMcf of natural gas and 87 barrels of oil or 6 MMcfe per day.

San Juan

Our San Juan Basin properties are located in the west-central portion of the basin in San Juan County, New Mexico. These wells produce from multiple sands of the Cretaceous Dakota formation and the Fruitland Coal seams. The Dakota is generally found at about 6,000 feet with the shallower Fruitland seams encountered at 2,500 to 3,000 feet. Our proved reserves of 3.4 Bcfe in the San Juan field represent less than 1% of our reserves. We own interests in 93 wells (14.1 net to us) in this field. During December 2012, net daily production attributable to our interest from this field averaged 1 MMcf of natural gas and 2 barrels of oil.

Major Property Acquisitions

As a result of our acquisitions, we have added 1.1 Tcfe of proved oil and natural gas reserves since 1991. Our ten largest acquisitions include the following:

Delaware Basin Acquisition.    In December 2011, we acquired certain oil and gas properties from Eagle Oil & Gas Co. and other third parties for $348.7 million. The properties acquired had estimated proved reserves of approximately 151.2 Bcfe and included approximately 65,000 exploratory acres (39,100 net to us).

Shell Wilcox Acquisition.    In December 2007, we completed the acquisition of certain oil and natural gas properties and related assets from SWEPI LP, an affiliate of Shell Oil Company for $160.1 million. The properties acquired had estimated proved reserves of approximately 70.1 Bcfe. Major fields acquired in the acquisition include the Fandango and Rosita fields.

Javelina Acquisition.    In June 2007 we acquired additional working interests in oil and gas properties in the Javelina field in South Texas from Abaco Operating LLC for $31.2 million. The properties acquired had estimated proved reserves of approximately 9.1 Bcfe.

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Denali Acquisition.    In September 2006 we acquired proved and unproved oil and gas properties in the Las Hermanitas field in South Texas from Denali Oil & Gas Partners LP and other working interest owners for $67.2 million. The properties acquired had estimated proved reserves of approximately 16.5 Bcfe.

Ensight Acquisition.    In May 2005, we completed the acquisition of certain oil and natural gas properties and related assets from Ensight Energy Partners, L.P., Laurel Production, LLC, Fairfield Midstream Services, LLC and Ensight Energy Management, LLC (collectively, “Ensight”) for $190.9 million. We also purchased additional interests in those properties from other owners for $10.9 million in July 2005. The properties acquired had estimated proved reserves of approximately 121.5 billion cubic feet of natural gas equivalent and included 312 active wells, of which 119 are operated by us. Major fields acquired include the Darco, Douglass, Cadeville, and Laurel fields. We divested of the Laurel field in 2010.

Ovation Energy Acquisition.    In October 2004, we acquired producing oil and gas properties in the East Texas, Arkoma, Anadarko and San Juan basins from Ovation Energy, L.P. for $62.0 million. The properties acquired had estimated proved reserves of approximately 41.0 billion cubic feet of gas equivalent and included 165 active wells, of which 69 were operated by us.

DevX Energy Acquisition.    In December 2001, we completed the acquisition of DevX Energy, Inc. by acquiring 100% of the common stock of DevX for $92.6 million. The total purchase price including debt and other liabilities assumed in the acquisition was $160.8 million. The acquisition included 600 producing wells located onshore primarily in East and South Texas, Kentucky, Oklahoma and Kansas with 1.2 MMBbls of oil reserves and 156.5 Bcf of natural gas reserves at the time of the acquisition.

Bois d’Arc Acquisition.    In December 1997, Comstock acquired working interests in certain producing offshore Louisiana oil and gas properties as well as interests in undeveloped offshore oil and natural gas leases for approximately $200.9 million from Bois d’Arc Resources and certain of its affiliates and working interest partners. We acquired interests in 43 wells (29.6 net to us) and eight separate production complexes located in the Gulf of Mexico offshore of Plaquemines and Terrebonne Parishes, Louisiana. The acquisition included interests in the Louisiana state and federal offshore areas of Main Pass Block 21, Ship Shoal Blocks 66, 67, 68 and 69 and South Pelto Block 1. The net proved reserves acquired in this acquisition were estimated at 14.3 MMBbls of oil and 29.4 Bcf of natural gas. We divested of these offshore properties in 2008.

Black Stone Acquisition.    In May 1996, we acquired 100% of the capital stock of Black Stone Oil Company and interests in producing and undeveloped oil and gas properties located in South Texas for $100.4 million. We acquired interests in 19 wells (7.7 net to us) that were located in the Double A Wells field in Polk County, Texas and we became the operator of most of the wells in the field. The net proved reserves acquired in this acquisition were estimated at 5.9 MMBbls of oil and 100.4 Bcf of natural gas. We divested of these properties in 2012.

Sonat Acquisition.    In July 1995, we purchased interests in certain producing oil and gas properties located in East Texas and North Louisiana from Sonat Inc. for $48.1 million. We acquired interests in 319 producing wells (188.0 net to us). The acquisition included interests in the Logansport, Beckville, Waskom, Hico-Knowles, and Blocker fields. The net proved reserves acquired in this acquisition were estimated at 0.8 MMBbls of oil and 104.7 Bcf of natural gas. We divested of the Hico-Knowles field in 2012.

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Oil and Natural Gas Reserves

The following table sets forth our estimated proved oil and natural gas reserves and the PV 10 Value as of December 31, 2012:

	Oil (MBbls)		Natural Gas (MMcf)		Total (MMcfe)		PV 10 Value (000’s)
Proved Developed:
Producing		11,503		367,140		436,157	$	759,743
Non-producing		805		1,635		6,466		37,877
Total Proved Developed		12,308		368,775		442,623		797,620
Proved Undeveloped		26,911		107,825		269,294		228,910
Total Proved		39,219		476,600		711,917		1,026,530
Discounted Future Income Taxes								(242,313	)
Standardized Measure of Discounted Future Net Cash Flows(1)							$	784,217

(1) The PV 10 Value represents the discounted future net cash flows attributable to our proved oil and natural gas reserves before income tax, discounted at 10%. Although it is a non-GAAP measure, we believe that the presentation of the PV 10 Value is relevant and useful to our investors because it presents the discounted future net cash flows attributable to our proved reserves prior to taking into account corporate future income taxes and our current tax structure. We use this measure when assessing the potential return on investment related to our oil and gas properties. The standardized measure of discounted future net cash flows represents the present value of future cash flows attributable to our proved oil and natural gas reserves after income tax, discounted at 10%.

The following table sets forth our year end reserves as of December 31 for each of the last three fiscal years:

	2010				2011				2012
	Oil (MBbls)		Natural Gas (MMcf)		Oil (MBbls)		Natural Gas (MMcf)		Oil (MBbls)		Natural Gas (MMcf)
Proved Developed		2,961		506,809		8,405		550,474		12,308		368,775
Proved Undeveloped		1,258		518,824		23,694		568,158		26,911		107,825
Total Proved Reserves		4,219		1,025,633		32,099		1,118,632		39,219		476,600

Proved reserves that are attributable to existing producing wells are primarily determined using decline curve analysis and rate transient analysis, which incorporates the principles of hydrocarbon flow. Proved reserves attributable to producing wells with limited production history and for undeveloped locations are estimated using performance from analogous wells in the surrounding area and geologic data to assess the reservoir continuity. Technologies relied on to establish reasonable certainty of economic producibility include, but are not limited to, electrical logs, radioactivity logs, core analyses, geologic maps and available production data, seismic data and well test data.

There are numerous uncertainties inherent in estimating quantities of proved oil and natural gas reserves. Oil and natural gas reserve engineering is a subjective process of estimating underground accumulations of oil and natural gas that cannot be precisely measured. The accuracy of any reserve estimate is a function of the quality of available data and of engineering and geological interpretation and judgment. Results of drilling, testing and production subsequent to the date of the estimate may justify revision of such estimate. Accordingly, reserves estimates are often different from the quantities of oil and natural gas that are ultimately recovered.

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The average prices that we realized from sales of oil and natural gas, excluding the effect of hedging, and lifting costs including severance and ad valorem taxes and transportation costs, for each of the last three fiscal years were as follows:

	Year Ended December 31,
	2010		2011		2012
Oil Price — $/Bbl	$	68.35	$	95.73	$	96.95
Natural Gas Price — $/Mcf	$	4.35	$	3.91	$	2.52
Lifting costs — $/Mcfe	$	1.10	$	0.82	$	1.06

Prices used in determining quantities of oil and natural gas reserves and future cash inflows from oil and natural gas reserves represent prices received at the point of sale. These prices have been adjusted from posted prices for both location and quality differences. The oil and natural gas prices used for reserves estimation were as follows:

Year	Oil Price (per  Bbl)		Natural Gas Price (per Mcf)
2010	$	76.31	$	4.16
2011	$	92.93	$	4.18
2012	$	94.61	$	2.84

Reserves may be classified as proved undeveloped if there is a high degree of confidence that the quantities will be recovered, and they are scheduled to be drilled within five years of their initial inclusion as proved reserves, unless specific circumstances justify a longer time. In connection with estimating proved undeveloped reserves for our December 31, 2012 reserve report, reserves on undrilled acreage were limited to those directly offsetting development spacing areas that are reasonably certain of production when drilled. Using empirical evidence, we utilize control points and sample sizes to show continuity in the reservoir.

The following table presents the changes in our estimated proved undeveloped oil and natural gas reserves for the years ended December 31, 2010, 2011 and 2012:

	Proved Undeveloped Reserves
	2010						2011					2012
	Oil (MBbls)			Natural Gas (MMcf)			Oil (MBbls)		Natural Gas (MMcf)			Oil (MBbls)			Natural Gas (MMcf)
Beginning Balance		2,320			315,287			1,258		518,824			23,694			568,158
Sales and Disposals		(1,996	)		(2,378	)		—		—			(5,698	)		(21,459	)
Acquisitions		—			—			16,959		45,792			—			—
Extension & Discoveries		1,012			241,160			5,151		66,978			10,526			11,778
Conversions from undeveloped to developed		—			(8,825	)		—		(39,761	)		(1,597	)		(1,466	)
Price, Performance and Other Revisions		(78	)		(26,420	)		326		(23,675	)		(14	)		(449,186	)
Total Change		(1,062	)		203,537			22,436		49,334			3,217			(460,333	)
Ending Balance		1,258			518,824			23,694		568,158			26,911			107,825

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The timing, by year, when our proved undeveloped reserve quantities were estimated to be converted to proved developed reserves is as follows:

	Proved Undeveloped Reserves
	2010				2011				2012
Year ended December 31,	Oil (MBbls)		Natural Gas (MMcf)		Oil (MBbls)		Natural Gas (MMcf)		Oil (MBbls)		Natural Gas (MMcf)
2011		527		107,729		—		—		—		—
2012		426		163,984		8,250		51,034		—		—
2013		305		138,831		4,909		264,497		4,402		16,220
2014		—		93,547		9,329		215,756		4,545		34,695
2015		—		14,733		925		36,311		4,769		25,472
2016		—		—		201		402		7,708		22,411
2017		—		—		80		158		5,487		9,027
Total		1,258		518,824		23,694		568,158		26,911		107,825

Our oil proved undeveloped reserves increased by 3.2 MMBbls during 2012. This increase was primarily due to our drilling program which added 8.1 MMBbls in the Eagle Ford shale and 2.4 MMBbls in West Texas. We also sold 5.7 million barrels of proved undeveloped oil reserves, and converted 1.6 million barrels to developed in 2012.

Our natural gas proved undeveloped reserves decreased by 460 Bcf at December 31, 2012 as compared with December 31, 2011. This decrease was primarily related to the decline in natural gas prices, which caused approximately 465 Bcf of our natural gas proved undeveloped reserves to become uneconomic under the natural gas price used to determine proved reserves in 2012. We also sold 22 Bcf of natural gas proved undeveloped reserves, added 11 Bcf of natural gas proved undeveloped reserves from our drilling program, and had other revisions of 16 Bcf. Included in the 465 Bcf of reserves reductions associated with downward price revisions were 330 Bcf of proved undeveloped natural gas reserves that, as of December 31, 2011 had positive undiscounted future cash flows but had a rate of return that was less than 10%. These reserves became uneconomic due to the lower natural gas prices used to determine our 2012 year end reserve estimates.

As of December 31, 2012, our proved undeveloped reserves included 26.9 MMBbls of oil and 107.8 Bcf of natural gas, for a total of 269.3 Bcfe of undeveloped reserves. Approximately 16.4 MMBbls of oil and 33 Bcf of natural gas of our proved undeveloped reserves at December 31, 2012 were associated with the future development of our West Texas properties that we acquired in December 2011 and an additional 10.5 MMBbls of oil and 7 Bcf of natural gas were associated with our Eagle Ford shale properties in South Texas. The proved undeveloped reserves associated with our Haynesville or Bossier shale properties represented approximately 55 Bcf of our natural gas proved undeveloped reserves at December 31, 2012. The remaining proved undeveloped reserves are primarily associated with developing reserves in our Cotton Valley and Hosston sand reservoirs in East Texas/North Louisiana and the Wilcox and Vicksburg reservoirs in South Texas. In 2012, we focused on drilling oil properties due to the weak natural gas prices. Seven of the Eagle Ford shale wells and four of the Wolfbone shale oil wells we drilled in 2012 resulted in conversions of proved undeveloped reserves to proved developed producing reserves at December 31, 2012. Undeveloped natural gas reserves originally expected to be converted to developed reserves in 2012 were removed from our proved reserves due to the low natural gas prices during 2012.

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Our oil proved undeveloped reserves increased by 22.4 MMBbls during 2011. This increase was primarily due to our acquisition of proved undeveloped reserves in West Texas of 17.0 MMBbls, proved undeveloped reserves additions of 4.7 MMBbls from our Eagle Ford shale properties and 0.7 MMBbls of oil additions and revisions on our other properties. Our natural gas proved undeveloped reserves increased by 49 Bcf during 2011. This increase was primarily related to our successful Haynesville and Bossier shale drilling program which added 44 Bcf of natural gas reserves, our acquisition in West Texas which added 34 Bcf and we had other additions of approximately 36 Bcf. Our proved undeveloped natural gas reserves additions were partially offset by conversions to proved developed reserves of approximately 40 Bcf during 2011 and other downward revisions to previous estimates of approximately 23 Bcf.

As of December 31, 2011, our proved undeveloped reserves included 23.7 MMBbls of oil and 568 Bcf of natural gas, for a total of 710 Bcfe of undeveloped reserves. Approximately 17.0 MMBbls of oil and 34 Bcf of natural gas of our proved undeveloped reserves at December 31, 2011 were associated with the future development of our West Texas properties that we acquired in December 2011 and an additional 6.0 MMBbls of oil and 5 Bcf of natural gas were associated with our Eagle Ford shale properties in South Texas. The proved undeveloped natural gas reserves associated with our Haynesville or Bossier shale properties represented approximately 425 Bcf of our total natural gas proved undeveloped reserves at December 31, 2011. The remaining proved undeveloped reserves are primarily associated with developing reserves in our Cotton Valley and Hosston sand reservoirs in East Texas/North Louisiana and our Wilcox and Vicksburg reservoirs in South Texas. During the year ended December 31, 2011, the price of oil increased significantly, and the value of oil relative to natural gas on a heating equivalent basis widened to historic levels. This, coupled with a growing over-supply of natural gas in the United States, caused us to change our strategic focus towards oil and away from natural gas. As a result, our drilling program during 2011, which was initially focused on our Haynesville and Bossier shale reserves, was refocused during the year towards our oil prone properties in the Eagle Ford shale in South Texas. Eleven of the Haynesville shale wells we drilled in 2011 resulted in conversions of proved undeveloped reserves to proved developed producing reserves at the end of 2011. To better position the company for future growth of oil production, in late 2011 we acquired a substantial acreage position in West Texas which is prospective for oil. A portion of this acquisition was determined to contain proved undeveloped reserves.

Our estimates of oil and natural gas reserves at December 31, 2012 include 80.6 Bcfe related to undrilled wells that have positive undiscounted future cash flows but which, based upon oil and natural gas prices that we use to prepare the proved reserve estimates, have a rate of return that is less than the 10% discount rate used in the Standardized Measure of Discounted Future Cash Flows attributable to the proved reserve estimates. We intend to drill the proved undeveloped wells in the time frame reflected in the estimates of proved oil and natural gas reserves as of December 31, 2012 based upon the oil and natural gas prices that we used to prepare the reserve estimates. We anticipate drilling such proved undeveloped locations based on our current development plans for our properties. Certain of these wells may be drilled to retain leasehold interests or to properly manage reservoir performance. To the extent that actual oil or natural gas prices are substantially weaker, we may have to modify our development plans or we may not fully recover our investment in drilling these wells from future cash flows.

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The following table presents the estimated timing of our estimated future development capital costs to be incurred for the years ended December 31, 2010, 2011 and 2012:

	Future Development Costs Total Proved Undeveloped Reserves
Year ended December 31,	2010		2011		2012
	(in millions)
2011	$	237.3	$	—	$	—
2012		381.0		395.4		—
2013		299.6		734.4		122.5
2014		199.0		742.4		111.5
2015		28.4		117.9		325.8
2016		—		9.4		275.3
2017		—		4.2		233.1
Total	$	1,145.3	$	2,003.7	$	1,068.2

The following table presents the changes in our estimated future development costs for the years ended December 31, 2011 and 2012:

	Future Development Costs — Proved Undeveloped Reserves
	Haynesville Shale			Eagle Ford Shale			West Texas Properties			All Other Properties			Total
	(in millions)
Total as of December 31, 2010	$	698.9		$	49.0		$	—		$	397.4		$	1,145.3
Development Costs Incurred		(56.3	)		—			—			—			(56.3	)
Additions and Revisions		243.5			169.0			653.5			(151.3	)		914.7
Total Changes		187.2			169.0			653.5			(151.3	)		858.4
Total as of December 31, 2011		886.1			218.0			653.5			246.1			2,003.7
Development Costs Incurred		(24.7	)		(43.4	)		(19.2	)		—			(87.3	)
Sales and Disposals		—			—			—			(48.1	)		(48.1	)
Additions and Revisions		(777.5	)		174.2			(19.5	)		(177.3	)		(800.1	)
Total Changes		(802.2	)		130.8			(38.7	)		(225.4	)		(935.5	)
Total as of December 31, 2012	$	83.9		$	348.8		$	614.8		$	20.7		$	1,068.2

Our estimated future capital costs to develop proved undeveloped reserves as of December 31, 2012 of $1.1 billion decreased by $0.9 billion from our estimated future capital costs of $2.0 billion as of December 31, 2011. During 2012 we incurred approximately $87.3 million to develop proved undeveloped reserves, primarily in our Eagle Ford shale and West Texas properties. Our oil focused future capital expenditures increased by $155.0 million and our natural gas focused capital expenditures decreased by $955.0 million. Approximately $749.0 million of the reduction in our estimated future development costs in 2012 was associated with wells that, as of December 31, 2011, had positive undiscounted cash flows but had a rate of return of less than 10%.

Our estimated future capital costs to develop proved undeveloped reserves as of December 31, 2011 of $2.0 billion increased by $858.0 million from our estimated future capital costs of $1.1 billion as of December 31, 2010. During 2011, we incurred approximately $56.3 million to develop proved undeveloped reserves in our Haynesville shale properties. Due to the success of our oil focused drilling

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programs, we increased our proved undeveloped reserve estimates in the Eagle Ford shale and we acquired properties in West Texas with significant potential for oil during 2011. During 2011 our oil focused future capital expenditures increased by $169.0 million in the Eagle Ford shale and $654.0 million in West Texas. Our future capital expenditures in the Haynesville and Bossier shales increased by $244.0 million during 2011 reflecting our 2011 drilling success on these properties, while we further reduced our forecast of capital expenditures on our remaining conventional natural gas undeveloped reserves by $151.0 million during 2011.

The estimates of our oil and natural gas reserves were determined by Lee Keeling and Associates, Inc. (“Lee Keeling”), an independent petroleum engineering firm. Lee Keeling has been providing consulting engineering and geological services for over fifty years. Lee Keeling’s professional staff is comprised of qualified petroleum engineers who are experienced in all productive areas of the United States. The technical person responsible for review of our reserve estimates at Lee Keeling meets the requirements regarding qualifications, independence, objectivity and confidentiality set forth in the Standards Pertaining to Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of Petroleum Engineers. Lee Keeling does not own any interests in our properties and is not employed on a contingent fee basis.

We have established, and maintain, internal controls designed to provide reasonable assurance that the estimates of proved reserves are computed and reported in accordance with rules and regulations promulgated by the SEC. These internal controls include documented process workflows, employing qualified professional engineering and geological personnel, and on-going education for personnel involved in our reserves estimation process. Our internal audit function routinely tests our processes and controls. Inputs to our reserves estimation process, which we provide to Lee Keeling for use in their reserves evaluation, are based upon our historical results for production history, oil and natural gas prices, lifting and development costs, ownership interests and other required data. Our Reservoir Engineering Department, comprised of qualified petroleum engineers and technical support staff, works with our operating, accounting, land and marketing departments in order to accumulate the information required for the reserves estimation process. Our Vice President of Reservoir Engineering is the primary person in charge of overseeing our reserve estimates and our Reservoir Engineering Department. He has a BS Degree and a Masters Degree in Petroleum Engineering, is a Registered Professional Engineer and has over thirty-five years of experience in various technical roles within the oil and gas industry. During the reserves estimation process our petroleum engineers work with Lee Keeling to ensure that all data we provide is properly reflected in the final reserves estimates and they consult with Lee Keeling throughout the reserves estimation process on technical questions regarding the reserve estimates. We also regularly communicate with Lee Keeling throughout the year about our operations and the potential impact of operational changes and events on our reserve estimates.

We did not provide estimates of total proved oil and natural gas reserves during the years ended December 31, 2010, 2011 or 2012 to any federal authority or agency, other than the SEC.

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Drilling Activity Summary

During the three-year period ended December 31, 2012, we drilled development and exploratory wells as set forth in the table below:

	2010				2011				2012
	Gross		Net		Gross		Net		Gross		Net
Development:
Oil		—		—		17		16.2		78		51.0
Gas		65		41.1		61		26.6		7		3.2
Dry		—		—		—		—		—		—
		65		41.1		78		42.8		85		54.2
Exploratory:
Oil		3		3.0		3		3.0		—		—
Gas		10		5.2		6		1.9		—		—
Dry		—		—		—		—		—		—
		13		8.2		9		4.9		—		—
Total		78		49.3		87		47.7		85		54.2

In 2013 to the date of this report, we have drilled ten wells (7.2 net to us) and we have eight wells (5.0 net to us) that are in the process of being drilled.

Producing Well Summary

The following table sets forth the gross and net producing oil and natural gas wells in which we owned an interest at December 31, 2012:

	Oil				Natural Gas
	Gross		Net		Gross		Net
Arkansas		—		—		15		8.0
Kansas		—		—		9		5.0
Kentucky		—		—		86		76.1
Louisiana		17		5.4		450		251.6
New Mexico		1		—		92		14.1
Oklahoma		10		1.2		127		17.9
Texas		141		96.1		669		437.2
Wyoming		—		—		26		1.9
Total		169		102.7		1,474		811.8

We operate 962 of the 1,643 producing wells presented in the above table. As of December 31, 2012, we owned interests in 14 wells containing multiple completions, which means that a well is producing from more than one completed zone. Wells with more than one completion are reflected as one well in the table above.

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Acreage

The following table summarizes our developed and undeveloped leasehold acreage at December 31, 2012, all of which is onshore in the continental United States. We have excluded acreage in which our interest is limited to a royalty or overriding royalty interest.

	Developed				Undeveloped
	Gross		Net		Gross		Net
Arkansas		1,280		684		—		—
Kansas		6,400		4,064		—		—
Kentucky		7,206		5,773		—		—
Louisiana		95,516		60,597		24,576		18,910
New Mexico		10,240		1,896		—		—
Oklahoma		38,080		5,707		—		—
Texas		123,553		74,361		96,090		60,968
Wyoming		13,440		927		—		—
Total		295,715		154,009		120,666		79,878

Our undeveloped acreage expires as follows:

Expires in 2013	29	%
Expires in 2014	38	%
Expires in 2015	10	%
Thereafter	23	%
	100	%

Title to our oil and natural gas properties is subject to royalty, overriding royalty, carried and other similar interests and contractual arrangements customary in the oil and gas industry, liens incident to operating agreements and for current taxes not yet due and other minor encumbrances. All of our oil and natural gas properties are pledged as collateral under our bank credit facility. As is customary in the oil and gas industry, we are generally able to retain our ownership interest in undeveloped acreage by production of existing wells, by drilling activity which establishes commercial reserves sufficient to maintain the lease, by payment of delay rentals or by the exercise of contractual extension rights. The Company anticipates retaining ownership of a substantial amount of the acreage with primary terms expiring in 2013 through drilling activity or by extending the leases.

Markets and Customers

The market for oil and natural gas produced by us depends on factors beyond our control, including the extent of domestic production and imports of oil and natural gas, the proximity and capacity of natural gas pipelines and other transportation facilities, demand for oil and natural gas, the marketing of competitive fuels and the effects of state and federal regulation. The oil and gas industry also competes with other industries in supplying the energy and fuel requirements of industrial, commercial and individual consumers.

Our oil production is currently sold under short-term contracts with a duration of six months or less. The contracts require the purchasers to purchase the amount of oil production that is available at prices

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tied to the spot oil markets. Our natural gas production is primarily sold under contracts with various terms and priced on first of the month index prices or on daily spot market prices. Approximately 89% of our 2012 natural gas sales were priced utilizing first of the month index prices and approximately 11% were priced utilizing daily spot prices. BP Energy Company and its subsidiaries and Shell Oil Company and its subsidiaries accounted for 42% and 27%, respectively, of our total 2012 sales. The loss of either of these customers would not have a material adverse effect on us as there is an available market for our crude oil and natural gas production from other purchasers.

We have entered into longer term marketing arrangements to ensure that we have adequate transportation to get our natural gas production in North Louisiana to the markets. As an alternative to constructing our own gathering and treating facilities, we have entered into a variety of gathering and treating agreements with midstream companies to transport our natural gas to the long-haul natural gas pipelines. We have entered into certain agreements with a major natural gas marketing company to provide us with firm transportation for 80,000 MMBtus per day for our North Louisiana natural gas production on the long-haul pipelines. These agreements expire from 2013 to 2019. To the extent we are not able to deliver the contracted natural gas volumes, we may be responsible for the transportation costs. Our production available to deliver under these agreements in North Louisiana is expected to exceed the firm transportation arrangements we have in place. In addition, the marketing company managing the firm transportation is required to use reasonable efforts to supplement our deliveries should we have a shortfall during the term of the agreements.

Competition

The oil and gas industry is highly competitive. Competitors include major oil companies, other independent energy companies and individual producers and operators, many of which have financial resources, personnel and facilities substantially greater than we do. We face intense competition for the acquisition of oil and natural gas properties and leases for oil and gas exploration.

Regulation

General. Various aspects of our oil and natural gas operations are subject to extensive and continually changing regulation, as legislation affecting the oil and natural gas industry is under constant review for amendment or expansion. Numerous departments and agencies, both federal and state, are authorized by statute to issue, and have issued, rules and regulations binding upon the oil and natural gas industry and its individual members. The Federal Energy Regulatory Commission, or “FERC,” regulates the transportation and sale for resale of natural gas in interstate commerce pursuant to the Natural Gas Act of 1938, or “NGA,” and the Natural Gas Policy Act of 1978, or “NGPA.” In 1989, however, Congress enacted the Natural Gas Wellhead Decontrol Act, which removed all remaining price and nonprice controls affecting all “first sales” of natural gas, effective January 1, 1993, subject to the terms of any private contracts that may be in effect. While sales by producers of natural gas and all sales of crude oil, condensate and natural gas liquids can currently be made at uncontrolled market prices, in the future Congress could reenact price controls or enact other legislation with detrimental impact on many aspects of our business. Under the provisions of the Energy Policy Act of 2005 (the “2005 Act”), the NGA has been amended to prohibit any form of market manipulation with the purchase or sale of natural gas, and the FERC has issued new regulations that are intended to increase natural gas pricing transparency. The 2005 Act has also significantly increased the penalties for violations of the NGA. The FERC has issued Order No. 704 et al. which requires a market participant to make an annual filing if it has sales or purchases equal to or greater than 2.2 million MMBtu in the reporting year to facilitate price transparency.

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Regulation and transportation of natural gas.    Our sales of natural gas are affected by the availability, terms and cost of transportation. The price and terms for access to pipeline transportation are subject to extensive regulation. The FERC requires interstate pipelines to provide open-access transportation on a not unduly discriminatory basis for similarly situated shippers. The FERC frequently reviews and modifies its regulations regarding the transportation of natural gas, with the stated goal of fostering competition within the natural gas industry.

Intrastate natural gas transportation is subject to regulation by state regulatory agencies. The Texas Railroad Commission has been changing its regulations governing transportation and gathering services provided by intrastate pipelines and gatherers. While the changes by these state regulators affect us only indirectly, they are intended to further enhance competition in natural gas markets. We cannot predict what further action the FERC or state regulators will take on these matters; however, we do not believe that we will be affected differently in any material respect than other natural gas producers with which we compete by any action taken.

Additional proposals and proceedings that might affect the natural gas industry are pending before Congress, the FERC, state commissions and the courts. The natural gas industry historically has been very heavily regulated; therefore, there is no assurance that the less stringent regulatory approach pursued by the FERC, Congress and state regulatory authorities will continue.

Federal leases.    Some of our operations are located on federal oil and natural gas leases that are administered by the Bureau of Land Management (“BLM”) of the United States Department of the Interior. These leases are issued through competitive bidding and contain relatively standardized terms. These leases require compliance with detailed Department of Interior and BLM regulations and orders that are subject to interpretation and change. These leases are also subject to certain regulations and orders promulgated by the Department of Interior’s Bureau of Ocean Energy Management, Regulation & Enforcement (“BOEMRE”), through its Minerals Revenue Management Program, which is responsible for the management of revenues from both onshore and offshore leases.

Oil and natural gas liquids transportation rates.    Our sales of crude oil, condensate and natural gas liquids are not currently regulated and are made at market prices. In a number of instances, however, the ability to transport and sell such products is dependent on pipelines whose rates, terms and conditions of service are subject to FERC jurisdiction under the Interstate Commerce Act. In other instances, the ability to transport and sell such products is dependent on pipelines whose rates, terms and conditions of service are subject to regulation by state regulatory bodies under state statutes. The price received from the sale of these products may be affected by the cost of transporting the products to market.

The FERC’s regulation of pipelines that transport crude oil, condensate and natural gas liquids under the Interstate Commerce Act is generally more light-handed than the FERC’s regulation of natural gas pipelines under the NGA. FERC-regulated pipelines that transport crude oil, condensate and natural gas liquids are subject to common carrier obligations that generally ensure non-discriminatory access. With respect to interstate pipeline transportation subject to regulation of the FERC under the Interstate Commerce Act, rates generally must be cost-based, although settlement rates agreed to by all shippers are permitted and market-based rates are permitted in certain circumstances. Effective January 1, 1995, the FERC implemented regulations establishing an indexing system (based on inflation) for transportation rates governed by the Interstate Commerce Act that allowed for an increase or decrease in the transportation rates. The FERC’s regulations include a methodology for such pipelines to change their rates through the use of an index system that establishes ceiling levels for such rates. The mandatory five year review in 2005 revised the methodology for this index to be based on Producer Price Index for Finished Goods (PPI-FG) plus 1.3 percent for the period July 1, 2006 through June 30, 2012. The mandatory five year review in 2012 revised the methodology for this index to be based on PPI-FG plus

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2.65 percent for the period July 1, 2012 through June 30, 2016. The regulations provide that each year the Commission will publish the oil pipeline index after the PPI-FG becomes available.

With respect to intrastate crude oil, condensate and natural gas liquids pipelines subject to the jurisdiction of state agencies, such state regulation is generally less rigorous than the regulation of interstate pipelines. State agencies have generally not investigated or challenged existing or proposed rates in the absence of shipper complaints or protests. Complaints or protests have been infrequent and are usually resolved informally.

We do not believe that the regulatory decisions or activities relating to interstate or intrastate crude oil, condensate or natural gas liquids pipelines will affect us in a way that materially differs from the way it affects other crude oil, condensate and natural gas liquids producers or marketers.

Environmental regulations.    We are subject to stringent federal, state and local laws. These laws, among other things, govern the issuance of permits to conduct exploration, drilling and production operations, the amounts and types of materials that may be released into the environment, the discharge and disposition of waste materials, the remediation of contaminated sites and the reclamation and abandonment of wells, sites and facilities. Numerous governmental departments issue rules and regulations to implement and enforce such laws, which are often difficult and costly to comply with and which carry substantial civil and even criminal penalties for failure to comply. Some laws, rules and regulations relating to protection of the environment may, in certain circumstances, impose strict liability for environmental contamination, rendering a person liable for environmental damages and cleanup cost without regard to negligence or fault on the part of such person. Other laws, rules and regulations may restrict the rate of oil and natural gas production below the rate that would otherwise exist or even prohibit exploration and production activities in sensitive areas. In addition, state laws often require various forms of remedial action to prevent pollution, such as closure of inactive pits and plugging of abandoned wells. The regulatory burden on the oil and natural gas industry increases our cost of doing business and consequently affects our profitability. These costs are considered a normal, recurring cost of our on-going operations. Our domestic competitors are generally subject to the same laws and regulations.

We believe that we are in substantial compliance with current applicable environmental laws and regulations and that continued compliance with existing requirements will not have a material adverse impact on our operations. However, environmental laws and regulations have been subject to frequent changes over the years, and the imposition of more stringent requirements or new regulatory schemes such as carbon “cap and trade” programs could have a material adverse effect upon our capital expenditures, earnings or competitive position, including the suspension or cessation of operations in affected areas. As such, there can be no assurance that material cost and liabilities will not be incurred in the future.

The Comprehensive Environmental Response, Compensation and Liability Act, or “CERCLA,” imposes liability, without regard to fault, on certain classes of persons that are considered to be responsible for the release of a “hazardous substance” into the environment. These persons include the current or former owner or operator of the disposal site or sites where the release occurred and companies that disposed or arranged for the disposal of hazardous substances. Under CERCLA, such persons may be subject to joint and several liability for the cost of investigating and cleaning up hazardous substances that have been released into the environment, for damages to natural resources and for the cost of certain health studies. In addition, companies that incur liability frequently also confront third party claims because it is not uncommon for neighboring landowners and other third parties to file claims for personal injury and property damage allegedly caused by hazardous substances or other pollutants released into the environment from a polluted site.

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The Federal Solid Waste Disposal Act, as amended by the Resource Conservation and Recovery Act of 1976, or “RCRA,” regulates the generation, transportation, storage, treatment and disposal of hazardous wastes and can require cleanup of hazardous waste disposal sites. RCRA currently excludes drilling fluids, produced waters and other wastes associated with the exploration, development or production of oil and natural gas from regulation as “hazardous waste.” Disposal of such non-hazardous oil and natural gas exploration, development and production wastes usually are regulated by state law. Other wastes handled at exploration and production sites or used in the course of providing well services may not fall within this exclusion. Moreover, stricter standards for waste handling and disposal may be imposed on the oil and natural gas industry in the future. From time to time, legislation is proposed in Congress that would revoke or alter the current exclusion of exploration, development and production wastes from RCRA’s definition of “hazardous wastes,” thereby potentially subjecting such wastes to more stringent handling, disposal and cleanup requirements. If such legislation were enacted, it could have a significant impact on our operating costs, as well as the oil and natural gas industry in general. The impact of future revisions to environmental laws and regulations cannot be predicted.

Our operations are also subject to the Clean Air Act, or “CAA,” and comparable state and local requirements. Amendments to the CAA were adopted in 1990 and contain provisions that may result in the gradual imposition of certain pollution control requirements with respect to air emissions from our operations. On April 17, 2012, the U. S. Environmental Protection Agency or “EPA” promulgated new emission standards for the oil and gas industry. These rules require a nearly 95 percent reduction in volatile organic compounds (“VOCs”) emitted from hydraulically fractured gas wells by January 1, 2015. This significant reduction in emissions is to be accomplished primarily through the use of “green completions” (i.e., capturing natural gas that currently escapes to the air). These rules also have notification and reporting requirements. Storage tanks emitting certain levels of VOCs may also require a 95% reduction of VOC emissions by October 1, 2015. We may be required to incur certain capital expenditures in the future for air pollution control equipment in connection with obtaining and maintaining operating permits and approvals for air emissions. However, we believe our operations will not be materially adversely affected by any such requirements, and the requirements are not expected to be any more burdensome to us than to other similarly situated companies involved in oil and natural gas exploration and production activities.

The Federal Water Pollution Control Act of 1972, as amended, or the “Clean Water Act,” imposes restrictions and controls on the discharge of produced waters and other wastes into navigable waters. Permits must be obtained to discharge pollutants into state and federal waters and to conduct construction activities in waters and wetlands. Certain state regulations and the general permits issued under the Federal National Pollutant Discharge Elimination System program prohibit the discharge of produced waters and sand, drilling fluids, drill cuttings and certain other substances related to the oil and natural gas industry into certain coastal and offshore waters, unless otherwise authorized. Further, the EPA has adopted regulations requiring certain oil and natural gas exploration and production facilities to obtain permits for storm water discharges. Costs may be associated with the treatment of wastewater or developing and implementing storm water pollution prevention plans. The Clean Water Act and comparable state statutes provide for civil, criminal and administrative penalties for unauthorized discharges for oil and other pollutants and impose liability on parties responsible for those discharges for the cost of cleaning up any environmental damage caused by the release and for natural resource damages resulting from the release. We believe that our operations comply in all material respects with the requirements of the Clean Water Act and state statutes enacted to control water pollution.

The Federal Safe Drinking Water Act of 1974, as amended, requires EPA to develop minimum federal requirements for Underground Injection Control (“UIC”) programs and other safeguards to protect public health by preventing injection wells from contaminating underground sources of drinking water. The UIC program does not regulate wells that are solely used for production. However, EPA has authority to regulate hydraulic fracturing when diesel fuels are used in fluids or propping agents. In 2012,

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EPA issued draft guidance on when UIC permitting requirements apply to fracking fluids containing diesel. We are not able to predict at this time the effect on our operations should EPA require UIC permits be obtained prior to utilizing diesel as a fracking agent. However, we believe our operations will not be materially adversely affected by any such requirements, and the requirements are not expected to be any more burdensome to us than to other similarly situated companies involved in oil and natural gas exploration and production activities.

Federal regulators require certain owners or operators of facilities that store or otherwise handle oil to prepare and implement spill prevention, control, countermeasure and response plans relating to the possible discharge of oil into surface waters. The Oil Pollution Act of 1990 (“OPA”) contains numerous requirements relating to the prevention and response to oil spills in the waters of the United States. The OPA subjects owners of facilities to strict joint and several liability for all containment and cleanup costs and certain other damages relating to a spill. Noncompliance with OPA may result in varying civil and criminal penalties and liabilities.

Executive Order 13158, issued on May 26, 2000, directs federal agencies to safeguard existing Marine Protected Areas, or “MPAs,” in the United States and establish new MPAs. The order requires federal agencies to avoid harm to MPAs to the extent permitted by law and to the maximum extent practicable. It also directs the EPA to propose new regulations under the Clean Water Act to ensure appropriate levels of protection for the marine environment. This order has the potential to adversely affect our operations by restricting areas in which we may carry out future exploration and development projects and/or causing us to incur increased operating expenses.

Certain flora and fauna that have officially been classified as “threatened” or “endangered” are protected by the Endangered Species Act. This law prohibits any activities that could “take” a protected plant or animal or reduce or degrade its habitat area. If endangered species are located in an area we wish to develop, the work could be prohibited or delayed and/or expensive mitigation might be required.

Other statutes that provide protection to animal and plant species and which may apply to our operations include, but are not necessarily limited to, the Oil Pollution Act, the Emergency Planning and Community Right to Know Act, the Marine Mammal Protection Act, the Marine Protection, Research and Sanctuaries Act, the Fish and Wildlife Coordination Act, the Fishery Conservation and Management Act, the Migratory Bird Treaty Act and the National Historic Preservation Act. These laws and regulations may require the acquisition of a permit or other authorization before construction or drilling commences and may limit or prohibit construction, drilling and other activities on certain lands lying within wilderness or wetlands and other protected areas and impose substantial liabilities for pollution resulting from our operations. The permits required for our various operations are subject to revocation, modification and renewal by issuing authorities. In addition, laws such as the National Environmental Policy Act and the Coastal Zone Management Act may make the process of obtaining certain permits more difficult or time consuming, resulting in increased costs and potential delays that could affect the viability or profitability of certain activities.

Certain statutes such as the Emergency Planning and Community Right to Know Act require the reporting of hazardous chemicals manufactured, processed, or otherwise used, which may lead to heightened scrutiny of the company’s operations by regulatory agencies or the public. In 2012, the EPA adopted a new reporting requirement, the Petroleum and Natural Gas Systems Greenhouse Gas Reporting Rule (40 C.F.R. Part 98, Subpart W), which requires certain onshore petroleum and natural gas facilities to begin collecting data on their emissions of greenhouse gases (“GHGs”) in January 2012, with the first annual reports of those emissions due on September 28, 2012. GHGs include gases such as methane, a primary component of natural gas, and carbon dioxide, a byproduct of burning natural gas. Different GHGs have different global warming potentials with CO₂ having the lowest global warming potential, so

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emissions of GHGs are typically expressed in terms of CO₂ equivalents, or CO₂e. The rule applies to facilities that emit 25,000 metric tons of CO₂e or more per year, and requires onshore petroleum and natural gas operators to group all equipment under common ownership or control within a single hydrocarbon basin together when determining if the threshold is met. We have determined that these new reporting requirements apply to us and we believe we have met all of the EPA required reporting deadlines and strive to ensure accurate and consistent emissions data reporting. Other EPA actions with respect to the reduction of greenhouse gases (such as EPA’s Greenhouse Gas Endangerment Finding, EPA’s Prevention of Significant Deterioration and Title V Greenhouse Gas Tailoring Rule) and various state actions have or could impose mandatory reductions in greenhouse gas emissions. We are unable to predict at this time how much the cost of compliance with any legislation or regulation of greenhouse gas emissions will be in future periods.

Such changes in environmental laws and regulations which result in more stringent and costly reporting, or waste handling, storage, transportation, disposal or cleanup activities, could materially affect companies operating in the energy industry. Adoption of new regulations further regulating emissions from oil and gas production could adversely affect our business, financial position, results of operations and prospects, as could the adoption of new laws or regulations which levy taxes or other costs on greenhouse gas emissions from other industries, which could result in changes to the consumption and demand for natural gas. We may also be assessed administrative, civil and/or criminal penalties if we fail to comply with any such new laws and regulations applicable to oil and natural gas production.

We maintain insurance against “sudden and accidental” occurrences, which may cover some, but not all, of the risks described above. Most significantly, the insurance we maintain will not cover the risks described above which occur over a sustained period of time. Further, there can be no assurance that such insurance will continue to be available to cover all such cost or that such insurance will be available at a cost that would justify its purchase. The occurrence of a significant event not fully insured or indemnified against could have a material adverse effect on our financial condition and results of operations.

Regulation of oil and natural gas exploration and production.    Our exploration and production operations are subject to various types of regulation at the federal, state and local levels. Such regulations include requiring permits and drilling bonds for the drilling of wells, regulating the location of wells, the method of drilling and casing wells and the surface use and restoration of properties upon which wells are drilled. Many states also have statutes or regulations addressing conservation matters, including provisions for the unitization or pooling of oil and natural gas properties, the establishment of maximum rates of production from oil and natural gas wells and the regulation of spacing, plugging and abandonment of such wells. Some state statutes limit the rate at which oil and natural gas can be produced from our properties.

State regulation.    Most states regulate the production and sale of oil and natural gas, including requirements for obtaining drilling permits, the method of developing new fields, the spacing and operation of wells and the prevention of waste of oil and gas resources. The rate of production may be regulated and the maximum daily production allowable from both oil and gas wells may be established on a market demand or conservation basis or both.

Office and Operations Facilities

Our executive offices are located at 5300 Town and Country Blvd., Suite 500 in Frisco, Texas 75034 and our telephone number is (972) 668-8800. We lease office space in Frisco, Texas covering 66,382 square feet at a monthly rate of $118,934. This lease expires on December 31, 2021. We also own production offices and pipe yard facilities near Marshall, Midland, Pecos and Zapata, Texas; Logansport, Louisiana and Guston, Kentucky.

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Employees

As of December 31, 2012, we had 116 employees and utilized contract employees for certain of our field operations. We consider our employee relations to be satisfactory.

Directors and Executive Officers

The following table sets forth certain information concerning our executive officers and directors.

Name	Position with Company	Age
M. Jay Allison	President, Chief Executive Officer and Chairman of the Board of Directors		57
Roland O. Burns	Senior Vice President, Chief Financial Officer, Secretary, Treasurer and Director		52
Mark A. Williams	Chief Operating Officer and Vice President of Operations		51
Gerry L. Blackshear	Vice President of Exploration		54
D. Dale Gillette	Vice President of Land and General Counsel		67
Stephen E. Neukom	Vice President of Marketing		63
Daniel K. Presley	Vice President of Accounting and Controller		52
Russell W. Romoser	Vice President of Reservoir Engineering		61
Richard D. Singer	Vice President of Financial Reporting		58
Blaine M. Stribling	Vice President of Corporate Development		42
David K. Lockett	Director		58
Cecil E. Martin	Director		71
Frederic D. Sewell	Director		78
David W. Sledge	Director		56
Nancy E. Underwood	Director		61

Executive Officers

A brief biography of each person who serves as a director or executive officer follows below.

M. Jay Allison has been a director since 1987, and our President and Chief Executive Officer since 1988. Mr. Allison was elected Chairman of the board of directors in 1997. From 1987 to 1988, Mr. Allison served as our Vice President and Secretary. From 1981 to 1987, he was a practicing oil and gas attorney with the firm of Lynch, Chappell & Alsup in Midland, Texas. Mr. Allison was Chairman of the Board of Directors of Bois d’Arc Energy, Inc. from the time of its formation in 2004 until its merger with Stone Energy Corporation in 2008. He received B.B.A., M.S. and J.D. degrees from Baylor University in 1978, 1980 and 1981, respectively. Mr. Allison also currently serves as a Director of Tidewater, Inc. and is on the Board of Regents for Baylor University.

Roland O. Burns has been our Senior Vice President since 1994, Chief Financial Officer and Treasurer since 1990, our Secretary since 1991 and a director since 1999. From 1982 to 1990, Mr. Burns was employed by the public accounting firm, Arthur Andersen. During his tenure with Arthur Andersen,

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Mr. Burns worked primarily in the firm’s oil and gas audit practice. Mr. Burns was a director, Senior Vice President and the Chief Financial Officer of Bois d’Arc Energy, Inc. from the time of its formation in 2004 until its merger with Stone Energy Corporation in 2008. Mr. Burns received B.A. and M.A. degrees from the University of Mississippi in 1982 and is a Certified Public Accountant. Mr. Burns also serves on the Board of Directors of the University of Mississippi Foundation.

Mark A. Williams was appointed our Chief Operating Officer in May 2012. From 2011 to 2012, he served as Vice President of Operations. From 2007 to 2011, he served as our Engineering and Operations Manager. From 1996 until 2007, Mr. Williams served as our Drilling Manager and as our South Texas District Engineer. Prior to joining Comstock Mr. Williams was a production engineer at Mitchell Energy Corporation and Citation Oil & Gas. Mr. Williams received a B.S. degree in Petroleum Engineering from Texas A&M University in 1984.

Gerry L. Blackshear was named our Vice President of Exploration in May 2012. From 2007 to 2011 Mr. Blackshear served as our Geoscience Manager. Prior to joining us, Mr. Blackshear was a lead geologist at Encana Oil & Gas from 2004 to 2007. Prior to 2004 he worked as a senior geologist for several large independent oil and gas exploration and development companies. Mr. Blackshear received a B.S. degree in Geology from East Texas State University in 1981 and is a Certified Petroleum Geologist.

D. Dale Gillette has been our Vice President of Land and General Counsel since 2006. Prior to joining us, Mr. Gillette practiced law extensively in the energy sector for 33 years, most recently as a partner with Gardere Wynne Sewell LLP, and before that with Locke Liddell & Sapp LLP. During that time he represented independent exploration and production companies and large financial institutions in numerous oil and gas transactions. Mr. Gillette has also served as corporate counsel in the legal department of Mesa Petroleum Co. and in the legal department of Enserch Corp. Mr. Gillette holds B.A. and J.D. degrees from the University of Texas and is a member of the State Bar of Texas.

Stephen E. Neukom has been our Vice President of Marketing since 1997 and has served as our manager of oil and natural gas marketing since 1996. From 1994 to 1996, Mr. Neukom served as vice president of Comstock Natural Gas, Inc., our former wholly owned gas marketing subsidiary. Prior to joining us, Mr. Neukom was senior vice president of Victoria Gas Corporation from 1987 to 1994. Mr. Neukom received a B.B.A. degree from the University of Texas in 1972.

Daniel K. Presley has been our Vice President of Accounting since 1997 and has been with us since 1989, serving as controller since 1991. Prior to joining us, Mr. Presley had six years of experience with several independent oil and gas companies including AmBrit Energy, Inc. Prior thereto, Mr. Presley spent two and one-half years with B.D.O. Seidman, a public accounting firm. Mr. Presley received a B.B.A. degree from Texas A & M University in 1983.

Russell W. Romoser was named our Vice President of Reservoir Engineering in May 2012. Mr. Romoser has over 35 years of experience as a reservoir engineer both with industry and with a petroleum engineering consulting firm. Prior to joining us, Mr. Romoser served eleven years as the Acquisitions Engineering Manager for EXCO Resources, Inc. Mr. Romoser received a B.S. Degree in Petroleum Engineering in 1975 and a Masters Degree in Petroleum Engineering in 1976 from the University of Texas and is a Registered Professional Engineer in Oklahoma and Texas.

Richard D. Singer has been our Vice President of Financial Reporting since 2005. Mr. Singer has over 36 years of experience in financial accounting and reporting. Prior to joining us, Mr. Singer most recently served as an assistant controller for Holly Corporation from 2004 to 2005 and as assistant controller for Santa Fe International Corporation from 1988 to 2002. Mr. Singer received a B.S. degree from the Pennsylvania State University in 1976 and is a Certified Public Accountant.

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Blaine M. Stribling was named our Vice President of Corporate Development in May 2012. From 2007 to 2011, Mr. Stribling served as our Asset & Corporate Development Manager. Prior to joining us, Mr. Stribling managed a development project team at Encana Oil & Gas from 2005 to 2007. Prior to 2005 he worked in various petroleum engineering operations management positions of increasing responsibility for several independent oil and gas exploration and development companies. Mr. Stribling received a B.S. Degree in Petroleum Engineering from the Colorado School of Mines.

Outside Directors

David K. Lockett has served as a director since 2001. Mr. Lockett was a Vice President with Dell Inc. and held executive management positions in several divisions within Dell from 1991 until his retirement from Dell in 2012. Mr. Lockett, who has over 35 years of experience in the technology industry, is presently considering opportunities to provide consulting services for small and mid-size companies. Mr. Lockett was a director of Bois d’Arc Energy, Inc. from May 2005 until its merger with Stone Energy Corporation in August 2008. Mr. Lockett received a B.B.A. degree from Texas A&M University in 1976.

Cecil E. Martin has served as a director since 1989 and is currently the chairman of our audit committee and our Lead Director. Mr. Martin is an independent commercial real estate investor who has primarily been managing his personal real estate investments since 1991. From 1973 to 1991, he also served as chairman of a public accounting firm in Richmond, Virginia. Mr. Martin was a director and chairman of the Audit Committee of Bois d’Arc Energy, Inc. from May 2005 until its merger with Stone Energy Corporation in August 2008. Mr. Martin also serves on the board of directors of Crosstex Energy, Inc. and Crosstex Energy, L.P. and on the Board of Directors and Audit Committee of Garrison Capital, a privately held business development company. Mr. Martin holds a B.B.A. degree from Old Dominion University and is a Certified Public Accountant.

Frederic D. Sewell was first elected as a director in May 2012. Mr. Sewell has extensive experience in the oil and gas industry, where he has had a distinguished career as an executive leader and a petroleum engineer. Mr. Sewell was the co-founder of Netherland, Sewell and Associates, Inc., a worldwide oil and gas consulting firm, where he served as the chairman and chief executive officer until his retirement in 2008. Mr. Sewell is presently the President and Chief Executive Officer of Sovereign Resources, LLC, an exploration and production company that he founded. Mr. Sewell holds a B.S. Degree in Petroleum Engineering from the University of Texas.

David W. Sledge has served as a director since 1996. Mr. Sledge is the Chief Operating Officer of ProPetro Services, Inc. Mr. Sledge was President and Chief Operating Officer of Sledge Drilling Company until it was acquired by Basic Energy Services, Inc. in April 2007 and served as a Vice President of Basic Energy Services, Inc. from April 2007 to February 2009. He served as an area operations manager for Patterson-UTI Energy, Inc. from May 2004 until January 2006. From March 2009 through October 2011, and from October 1996 until May 2004, Mr. Sledge managed his personal investments in oil and gas exploration activities. Mr. Sledge was a director of Bois d’Arc Energy, Inc. from May 2005 until its merger with Stone Energy Corporation in August 2008. Mr. Sledge is a past director of the International Association of Drilling Contractors and is a past chairman of the Permian Basin chapter of this association. He received a B.B.A. degree from Baylor University in 1979.

Nancy E. Underwood has served as a director since 2004. Ms. Underwood is owner and President of Underwood Financial Ltd., a position she has held since 1986. Ms. Underwood holds B.S. and J.D. degrees from Emory University and practiced law at an Atlanta, Georgia based law firm before joining River Hill Development Corporation in 1981. Ms. Underwood currently serves on the Executive Board and Campaign Steering Committee of the Southern Methodist University Dedman School of Law and on the Board of Directors of Texas Health Presbyterian Foundation.

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Available Information

Our executive offices are located at 5300 Town and Country Blvd., Suite 500, Frisco, Texas 75034. Our telephone number is (972) 668-8800. We file annual, quarterly and current reports, proxy statements and other documents with the SEC under the Securities Exchange Act of 1934. The public may read and copy any materials that we file with the SEC at the SEC’s Public Reference Room at 100 F Street N.E., Washington, D.C. 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. In addition, the SEC maintains a website that contains reports, proxy and information statements, and other information that is electronically filed with the SEC. The public can obtain any documents that we file with the SEC at www.sec.gov. We also make available free of charge on our website (www.comstockresources.com) our Annual Report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and, if applicable, amendments to those reports filed or furnished pursuant to Section 13(a) of the Exchange Act as soon as reasonably practicable after we file such material with, or furnish it to, the SEC.

ITEM 1A.     RISK FACTORS

You should carefully consider the following risk factors as well as the other information contained or incorporated by reference in this report, as these important factors, among others, could cause our actual results to differ from our expected or historical results. It is not possible to predict or identify all such factors. Consequently, you should not consider any such list to be a complete statement of all of our potential risks or uncertainties.

A substantial or extended decline in oil and natural gas prices may adversely affect our business, financial condition, cash flow, liquidity or results of operations and our ability to meet our capital expenditure obligations and financial commitments and to implement our business strategy.

Our business is heavily dependent upon the prices of, and demand for, oil and natural gas. Historically, the prices for oil and natural gas have been volatile and are likely to remain volatile in the future. Prices for oil remained relatively strong in 2012, but our realized natural gas prices continued to decline in 2012, reaching a thirteen year low of $2.03 per Mcf in the second quarter of 2012. The continued growth in production of natural gas in the United States has increased supply and resulted in high natural gas storage inventories. As a result, natural gas prices continue to face downward pressures.

The prices we receive for our oil and natural gas production and the level of such production will be subject to wide fluctuations and depend on numerous factors beyond our control, including the following:

• the domestic and foreign supply of oil and natural gas;

• weather conditions;

• the price and quantity of imports of oil and natural gas;

• political conditions and events in other oil-producing and natural gas-producing countries, including embargoes, hostilities in the Middle East and other sustained military campaigns, and acts of terrorism or sabotage;

• the actions of the Organization of Petroleum Exporting Countries, or OPEC;

• domestic government regulation, legislation and policies;

• the level of global oil and natural gas inventories;

• technological advances affecting energy consumption;

• the price and availability of alternative fuels; and

• overall economic conditions.

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If the decline in the price of natural gas that first started in 2008 continues through 2013, the lower prices will adversely affect:

• our revenues, profitability and cash flow from operations;

• the value of our proved oil and natural gas reserves;

• the economic viability of certain of our drilling prospects;

• our borrowing capacity; and

• our ability to obtain additional capital.

We have entered into certain oil price hedging arrangements on certain of our anticipated sales in 2013. In the future we may enter into additional hedging arrangements in order to reduce our exposure to price risks. Such arrangements would limit our ability to benefit from increases in oil and natural gas prices.

The recent recession could have a material adverse impact on our financial position, results of operations and cash flows.

The oil and gas industry is cyclical and tends to reflect general economic conditions. The United States and other countries have been in a recession which could continue through 2013 and beyond, and the capital markets have experienced significant volatility. The recession has had an adverse impact on demand and pricing for oil and natural gas. A continuation of the recession could have a further negative impact on oil and natural gas prices. Our operating cash flows and profitability will be significantly affected by declining oil and natural gas prices. Further declines in oil and natural gas prices may also impact the value of our oil and gas reserves, which could result in future impairment charges to reduce the carrying value of our oil and gas properties and our marketable securities. Our future access to capital could be limited due to tightening credit markets and volatile capital markets. If our access to capital is limited, development of our assets may be delayed or limited, and we may not be able to execute our growth strategy.

Our future production and revenues depend on our ability to replace our reserves.

Our future production and revenues depend upon our ability to find, develop or acquire additional oil and natural gas reserves that are economically recoverable. Our proved reserves will generally decline as reserves are depleted, except to the extent that we conduct successful exploration or development activities or acquire properties containing proved reserves, or both. To increase reserves and production, we must continue our acquisition and drilling activities. We cannot assure you, however, that our acquisition and drilling activities will result in significant additional reserves or that we will have continuing success drilling productive wells at low finding and development costs. Furthermore, while our revenues may increase if prevailing oil and natural gas prices increase significantly, our finding costs for additional reserves could also increase.

Prospects that we decide to drill may not yield oil or natural gas in commercially viable quantities or quantities sufficient to meet our targeted rate of return.

A prospect is a property in which we own an interest or have operating rights and that has what our geoscientists believe, based on available seismic and geological information, to be an indication of potential oil or natural gas. Our prospects are in various stages of evaluation, ranging from a prospect that is ready to be drilled to a prospect that will require substantial additional evaluation and interpretation. There is no way

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to predict in advance of drilling and testing whether any particular prospect will yield oil or natural gas in sufficient quantities to recover drilling or completion costs or to be economically viable. The use of seismic data and other technologies and the study of producing fields in the same area will not enable us to know conclusively prior to drilling whether oil or natural gas will be present or, if present, whether oil or natural gas will be present in commercial quantities. The analysis that we perform using data from other wells, more fully explored prospects and/or producing fields may not be useful in predicting the characteristics and potential reserves associated with our drilling prospects. If we drill additional unsuccessful wells, our drilling success rate may decline and we may not achieve our targeted rate of return.

Federal and state legislation and regulatory initiatives relating to hydraulic fracturing could result in increased costs and additional operating restrictions or delays as well as restrict our access to our oil and gas reserves.

Hydraulic fracturing is an essential and common practice that is used to stimulate production of oil and natural gas from dense subsurface rock formations such as shale and tight sands. We routinely apply hydraulic fracturing techniques in completing our wells. The process involves the injection of water, sand and additives under pressure into a targeted subsurface formation. The water and pressure create fractures in the rock formations, which are held open by the grains of sand, enabling the oil or natural gas to flow to the wellbore. The use of hydraulic fracturing is necessary to produce commercial quantities of oil and natural gas from many reservoirs including the Haynesville shale, Bossier shale, Eagle Ford shale, Wolfcamp shale, Bone Spring, Cotton Valley and other tight natural gas and oil reservoirs. Substantially all of our proved oil and gas reserves that are currently not producing and our undeveloped acreage require hydraulic fracturing to be productive. All of the wells being drilled by us in 2013 utilize hydraulic fracturing in their completion. We estimate we will incur approximately $178.0 million for hydraulic fracturing services in connection with our 2013 drilling and completion program.

The use of hydraulic fracturing in our well completion activities could expose us to liability for negative environmental effects that might occur. Although we have not had any incidents related to hydraulic fracturing operations that we believe have caused any negative environmental effects, we have established operating procedures to respond and report any unexpected fluid discharge which might occur during our operations, including plans to remediate any spills that might occur. In the event that we were to suffer a loss related to hydraulic fracturing operations, our insurance will be net of a $25,000 deductible and our ability to recover costs will be limited to a total aggregate policy limit of $26.0 million, which may or may not be sufficient to pay the full amount of our losses incurred.

Drilling and completion activities are typically regulated by state oil and natural gas commissions. Our drilling and completion activities are conducted primarily in Louisiana and Texas. Texas adopted a law in June 2012 requiring disclosure to the Railroad Commission of Texas and the public of certain information regarding the components used in the hydraulic-fracturing process. Several proposals are before the United States Congress that, if implemented, would subject the process of hydraulic fracturing to regulation under the Safe Drinking Water Act. At the direction of Congress, the EPA is currently conducting an extensive, multi-year study into the potential effects of hydraulic fracturing on underground sources of drinking water, and the results of that study have the potential to impact the likelihood or scope of future legislation or regulation.

Potential changes to US federal tax regulations, if passed, could have an adverse effect on us.

The United States Congress continues to consider imposing new taxes and repeal of many tax incentives and deductions that are currently used by independent oil and gas producers. Examples of changes being considered that would impact us are: elimination of the ability to fully deduct intangible

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drilling costs in the year incurred, repeal of the manufacturing tax deduction for oil and gas companies, increasing the geological and geophysical cost amortization period, and implementation of a fee on non-producing leases located on federal lands. If these proposals are enacted, our current income tax liability will increase, potentially significantly, which would have a negative impact on our cash flow from operating activities. A reduction in operating cash flow could require us to reduce our drilling activities. Since none of these proposals have yet to be included in new legislation, we do not know the ultimate impact they may have on our business.

Our debt service requirements could adversely affect our operations and limit our growth.

We had $1.3 billion in debt as of December 31, 2012, and our ratio of total debt to total capitalization was approximately 59%.

Our outstanding debt will have important consequences, including, without limitation:

• a portion of our cash flow from operations will be required to make debt service payments;

• our ability to borrow additional amounts for working capital, capital expenditures (including acquisitions) or other purposes will be limited; and

• our debt could limit our ability to capitalize on significant business opportunities, our flexibility in planning for or reacting to changes in market conditions and our ability to withstand competitive pressures and economic downturns.

In addition, future acquisition or development activities may require us to alter our capitalization significantly. These changes in capitalization may significantly increase our debt. Moreover, our ability to meet our debt service obligations and to reduce our total debt will be dependent upon our future performance, which will be subject to general economic conditions and financial, business and other factors affecting our operations, many of which are beyond our control. If we are unable to generate sufficient cash flow from operations in the future to service our indebtedness and to meet other commitments, we will be required to adopt one or more alternatives, such as refinancing or restructuring our indebtedness, selling material assets or seeking to raise additional debt or equity capital. We cannot assure you that any of these actions could be effected on a timely basis or on satisfactory terms or that these actions would enable us to continue to satisfy our capital requirements.

Our bank credit facility contains a number of significant covenants. These covenants will limit our ability to, among other things:

• borrow additional money;

• merge, consolidate or dispose of assets;

• make certain types of investments;

• enter into transactions with our affiliates; and

• pay dividends.

Our failure to comply with any of these covenants could cause a default under our bank credit facility and the respective indentures governing our senior notes. A default, if not waived, could result in acceleration of our indebtedness, in which case the debt would become immediately due and payable. If this occurs, we may not be able to repay our debt or borrow sufficient funds to refinance it given the current status of the credit markets. Even if new financing is available, it may not be on terms that are acceptable to us. Complying with these covenants may cause us to take actions that we otherwise would not take or not take actions that we otherwise would take.

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The unavailability or high cost of drilling rigs, equipment, supplies or qualified personnel and oilfield services could adversely affect our ability to execute our exploration and development plans on a timely basis and within our budget.

Our industry has experienced a shortage of drilling rigs, equipment, supplies and qualified personnel in recent years as the result of higher demand for these services. Costs and delivery times of rigs, equipment and supplies have been substantially greater than they were several years ago. In addition, demand for, and wage rates of, qualified drilling rig crews have escalated due to the higher activity levels. Shortages of drilling rigs, equipment or supplies or qualified personnel in the areas in which we operate could delay or restrict our exploration and development operations, which in turn could adversely affect our financial condition and results of operations because of our concentration in those areas.

Our business involves many uncertainties and operating risks that can prevent us from realizing profits and can cause substantial losses.

Our future success will depend on the success of our exploration and development activities. Exploration activities involve numerous risks, including the risk that no commercially productive natural gas or oil reserves will be discovered. In addition, these activities may be unsuccessful for many reasons, including weather, cost overruns, equipment shortages and mechanical difficulties. Moreover, the successful drilling of a natural gas or oil well does not ensure we will realize a profit on our investment. A variety of factors, both geological and market-related, can cause a well to become uneconomical or only marginally economical. In addition to their costs, unsuccessful wells can hurt our efforts to replace production and reserves.

Our business involves a variety of operating risks, including:

• unusual or unexpected geological formations;

• fires;

• explosions;

• blow-outs and surface cratering;

• uncontrollable flows of natural gas, oil and formation water;

• natural disasters, such as hurricanes, tropical storms and other adverse weather conditions;

• pipe, cement, or pipeline failures;

• casing collapses;

• mechanical difficulties, such as lost or stuck oil field drilling and service tools;

• abnormally pressured formations; and

• environmental hazards, such as natural gas leaks, oil spills, pipeline ruptures and discharges of toxic gases.

If we experience any of these problems, well bores, gathering systems and processing facilities could be affected, which could adversely affect our ability to conduct operations.

We could also incur substantial losses as a result of:

• injury or loss of life;

• severe damage to and destruction of property, natural resources and equipment;

• pollution and other environmental damage;

• clean-up responsibilities;

• regulatory investigation and penalties;

• suspension of our operations; and

• repairs to resume operations.

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We pursue acquisitions as part of our growth strategy and there are risks in connection with acquisitions.

Our growth has been attributable in part to acquisitions of producing properties and companies. We expect to continue to evaluate and, where appropriate, pursue acquisition opportunities on terms we consider favorable. However, we cannot assure you that suitable acquisition candidates will be identified in the future, or that we will be able to finance such acquisitions on favorable terms. In addition, we compete against other companies for acquisitions, and we cannot assure you that we will successfully acquire any material property interests. Further, we cannot assure you that future acquisitions by us will be integrated successfully into our operations or will increase our profits.

The successful acquisition of producing properties requires an assessment of numerous factors beyond our control, including, without limitation:

• recoverable reserves;

• exploration potential;

• future oil and natural gas prices;

• operating costs; and

• potential environmental and other liabilities.

In connection with such an assessment, we perform a review of the subject properties that we believe to be generally consistent with industry practices. The resulting assessments are inexact and their accuracy uncertain, and such a review may not reveal all existing or potential problems, nor will it necessarily permit us to become sufficiently familiar with the properties to fully assess their merits and deficiencies. Inspections may not always be performed on every well, and structural and environmental problems are not necessarily observable even when an inspection is made.

Additionally, significant acquisitions can change the nature of our operations and business depending upon the character of the acquired properties, which may be substantially different in operating and geologic characteristics or geographic location than our existing properties. While our current operations are focused in the East Texas/North Louisiana, South Texas and West Texas regions, we may pursue acquisitions or properties located in other geographic areas.

We operate in a highly competitive industry, and our failure to remain competitive with our competitors, many of which have greater resources than we do, could adversely affect our results of operations.

The oil and natural gas industry is highly competitive in the search for and development and acquisition of reserves. Our competitors often include companies that have greater financial and personnel resources than we do. These resources could allow those competitors to price their products and services more aggressively than we can, which could hurt our profitability. Moreover, our ability to acquire additional properties and to discover reserves in the future will be dependent upon our ability to evaluate and select suitable properties and to close transactions in a highly competitive environment.

Our competitors may use superior technology that we may be unable to afford or which would require costly investment by us in order to compete.

If our competitors use or develop new technologies, we may be placed at a competitive disadvantage, and competitive pressures may force us to implement new technologies at a substantial cost. In addition, our competitors may have greater financial, technical and personnel resources that allow

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them to enjoy technological advances and may in the future allow them to implement new technologies before we can. We cannot be certain that we will be able to implement technologies on a timely basis or at a cost that is acceptable to us. One or more of the technologies that we currently use or that we may implement in the future may become obsolete. All of these factors may inhibit our ability to acquire additional prospects and compete successfully in the future.

Substantial exploration and development activities could require significant outside capital, which could dilute the value of our common shares and restrict our activities. Also, we may not be able to obtain needed capital or financing on satisfactory terms, which could lead to a limitation of our future business opportunities and a decline in our oil and natural gas reserves.

We expect to expend substantial capital in the acquisition of, exploration for and development of oil and natural gas reserves. In order to finance these activities, we may need to alter or increase our capitalization substantially through the issuance of debt or equity securities, the sale of non-strategic assets or other means. The issuance of additional equity securities could have a dilutive effect on the value of our common shares, and may not be possible on terms acceptable to us given the current volatility in the financial markets. The issuance of additional debt would require that a portion of our cash flow from operations be used for the payment of interest on our debt, thereby reducing our ability to use our cash flow to fund working capital, capital expenditures, acquisitions, dividends and general corporate requirements, which could place us at a competitive disadvantage relative to other competitors. Additionally, if our revenues decrease as a result of lower oil or natural gas prices, operating difficulties or declines in reserves, our ability to obtain the capital necessary to undertake or complete future exploration and development programs and to pursue other opportunities may be limited, which could result in a curtailment of our operations relating to exploration and development of our prospects, which in turn could result in a decline in our oil and natural gas reserves.

If oil prices decline and natural gas prices remain low or continue to decline, we may be required to write-down the carrying values and/or the estimates of total reserves of our oil and natural gas properties, which would constitute a non-cash charge to earnings and adversely affect our results of operations.

Accounting rules applicable to us require that we review periodically the carrying value of our oil and natural gas properties for possible impairment. Based on specific market factors and circumstances at the time of prospective impairment reviews and the continuing evaluation of development plans, production data, economics and other factors, we may be required to write down the carrying value of our oil and natural gas properties. A write-down constitutes a non-cash charge to earnings. We may incur non-cash charges in the future, which could have a material adverse effect on our results of operations in the period taken. We may also reduce our estimates of the reserves that may be economically recovered, which could have the effect of reducing the total value of our reserves. Such a reduction in carrying value could impact our borrowing ability and may result in accelerating the repayment date of any outstanding debt.

Our reserve estimates depend on many assumptions that may turn out to be inaccurate. Any material inaccuracies in our reserve estimates or underlying assumptions will materially affect the quantities and present value of our reserves.

Reserve engineering is a subjective process of estimating the recovery from underground accumulations of oil and natural gas that cannot be precisely measured. The accuracy of any reserve

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estimate depends on the quality of available data, production history and engineering and geological interpretation and judgment. Because all reserve estimates are to some degree imprecise, the quantities of oil and natural gas that are ultimately recovered, production and operating costs, the amount and timing of future development expenditures and future oil and natural gas prices may all differ materially from those assumed in these estimates. The information regarding present value of the future net cash flows attributable to our proved oil and natural gas reserves is only estimated and should not be construed as the current market value of the oil and natural gas reserves attributable to our properties. Thus, such information includes revisions of certain reserve estimates attributable to proved properties included in the preceding year’s estimates. Such revisions reflect additional information from subsequent activities, production history of the properties involved and any adjustments in the projected economic life of such properties resulting from changes in product prices. Any future downward revisions could adversely affect our financial condition, our borrowing ability, our future prospects and the value of our common stock.

As of December 31, 2012, 38% of our total proved reserves were undeveloped and 8% were developed non-producing. These reserves may not ultimately be developed or produced. Furthermore, not all of our undeveloped or developed non-producing reserves may be ultimately produced at the time periods we have planned, at the costs we have budgeted, or at all. As a result, we may not find commercially viable quantities of oil and natural gas, which in turn may result in a material adverse effect on our results of operations.

If we are unsuccessful at marketing our oil and natural gas at commercially acceptable prices, our profitability will decline.

Our ability to market oil and natural gas at commercially acceptable prices depends on, among other factors, the following:

• the availability and capacity of gathering systems and pipelines;

• federal and state regulation of production and transportation;

• changes in supply and demand; and

• general economic conditions.

Our inability to respond appropriately to changes in these factors could negatively affect our profitability.

Market conditions or operational impediments may hinder our access to oil and natural gas markets or delay our production.

Market conditions or the unavailability of satisfactory oil and natural gas transportation arrangements may hinder our access to oil and natural gas markets or delay our production. The availability of a ready market for our oil and natural gas production depends on a number of factors, including the demand for and supply of oil and natural gas and the proximity of reserves to pipelines and processing facilities. Our ability to market our production depends in a substantial part on the availability and capacity of gathering systems, pipelines and processing facilities, in some cases owned and operated by third parties. Our failure to obtain such services on acceptable terms could materially harm our business. We may be required to shut in wells for a lack of a market or because of the inadequacy or unavailability of pipelines or gathering system capacity. If that were to occur, then we would be unable to realize revenue from those wells until arrangements were made to deliver our production to market.

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We depend on our key personnel and the loss of any of these individuals could have a material adverse effect on our operations.

We believe that the success of our business strategy and our ability to operate profitably depend on the continued employment of M. Jay Allison, our President and Chief Executive Officer, and a limited number of other senior management personnel. Loss of the services of Mr. Allison or any of those other individuals could have a material adverse effect on our operations.

Our insurance coverage may not be sufficient or may not be available to cover some liabilities or losses that we may incur.

If we suffer a significant accident or other loss, our insurance coverage will be net of our deductibles and may not be sufficient to pay the full current market value or current replacement value of our lost investment, which could result in a material adverse impact on our operations and financial condition. Our insurance does not protect us against all operational risks. We do not carry business interruption insurance. For some risks, we may not obtain insurance if we believe the cost of available insurance is excessive relative to the risks presented. Because third party drilling contractors are used to drill our wells, we may not realize the full benefit of workers’ compensation laws in dealing with their employees. In addition, some risks, including pollution and environmental risks, generally are not fully insurable.

We are subject to extensive governmental laws and regulations that may adversely affect the cost, manner or feasibility of doing business.

Our operations and facilities are subject to extensive federal, state and local laws and regulations relating to the exploration for, and the development, production and transportation of, oil and natural gas, and operating safety. Future laws or regulations, any adverse changes in the interpretation of existing laws and regulations or our failure to comply with existing legal requirements may harm our business, results of operations and financial condition. We may be required to make large and unanticipated capital expenditures to comply with governmental laws and regulations, such as:

• lease permit restrictions;

• drilling bonds and other financial responsibility requirements, such as plug and abandonment bonds;

• spacing of wells;

• unitization and pooling of properties;

• safety precautions;

• regulatory requirements; and

• taxation.

Under these laws and regulations, we could be liable for:

• personal injuries;

• property and natural resource damages;

• well reclamation costs; and

• governmental sanctions, such as fines and penalties.

Our operations could be significantly delayed or curtailed and our cost of operations could significantly increase as a result of regulatory requirements or restrictions. We are unable to predict the ultimate cost of compliance with these requirements or their effect on our operations.

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Our operations may incur substantial liabilities to comply with environmental laws and regulations.

Our oil and natural gas operations are subject to stringent federal, state and local laws and regulations relating to the release or disposal of materials into the environment and otherwise relating to environmental protection. These laws and regulations:

• require the acquisition of one or more permits before drilling commences;

• impose limitations on where drilling can occur and/or requires mitigation before authorizing drilling in certain locations;

• restrict the types, quantities and concentration of substances that can be released into the environment in connection with drilling and production activities;

• require reporting of significant releases, and annual reporting of the nature and quantity of emissions, discharges and other releases into the environment;

• limit or prohibit drilling activities on certain lands lying within wilderness, wetlands and other protected areas; and

• impose substantial liabilities for pollution resulting from our operations.

Failure to comply with these laws and regulations may result in:

• the assessment of administrative, civil and criminal penalties;

• the incurrence of investigatory or remedial obligations; and

• the imposition of injunctive relief.

In June 2009 the United States House of Representatives passed the American Clean Energy and Security Act of 2009. A similar bill, the Clean Energy Jobs and American Power Act, introduced in the Senate, did not pass. Both bills contained the basic feature of establishing a “cap and trade” system for restricting greenhouse gas emissions in the United States. Under such a system, certain sources of greenhouse gas emissions would be required to obtain greenhouse gas emission “allowances” corresponding to their annual emissions of greenhouse gases. The number of emission allowances issued each year would decline as necessary over time to meet overall emission reduction goals. As the number of greenhouse gas emission allowances declines each year, the cost or value of allowances is expected to escalate significantly. It appears that the prospects for a cap and trade system such as that proposed in these bills have dimmed significantly; however, the EPA has moved ahead with its efforts to regulate GHG emissions from certain sources by rule. The EPA issued Subpart W of the Final Mandatory Reporting of Greenhouse Gases Rule, which required petroleum and natural gas systems that emit 25,000 metric tons of CO₂e or more per year to begin collecting GHG emissions data under a new reporting system. We believe we have met all of the reporting requirements under these new regulations. Beyond measuring and reporting, the EPA issued an “Endangerment Finding” under section 202(a) of the Clean Air Act, concluding greenhouse gas pollution threatens the public health and welfare of current and future generations. The EPA has adopted regulations that would require permits for and reductions in greenhouse gas emissions for certain facilities. Since all of our oil and natural gas production is in the United States, these laws or regulations that have been or may be adopted to restrict or reduce emissions of greenhouse gases could require us to incur substantial increased operating costs, and could have an adverse effect on demand for the oil and natural gas we produce.

In June 2010 the Bureau of Land Management issued a proposed oil and gas leasing reform. The proposal would require, among other things, a more detailed environmental review prior to leasing oil and natural gas resources on federal lands, increased public engagement in the development of Master Leasing Plans prior to leasing areas where intensive new oil and gas development is anticipated, and a comprehensive parcel review process with greater public involvement in the identification of key environmental resource values before a parcel is leased. New leases would incorporate adaptive management stipulations, requiring lessees to monitor and respond to observed environmental impacts,

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possibly through the implementation of expensive new control measures or curtailment of operations, potentially reducing profitability. The proposed policy could have the effect of reducing the amount of new federal lands made available for lease, increasing the competition for and cost of available parcels.

Changes in environmental laws and regulations occur frequently, and any changes that result in more stringent or costly restrictions on emissions, and/or waste handling, storage, transport, disposal or cleanup requirements could require us to make significant expenditures to reach and maintain compliance and may otherwise have a material adverse effect on our industry in general and on our own results of operations, competitive position or financial condition. Under these environmental laws and regulations, we could be held strictly liable for the removal or remediation of previously released materials or property contamination regardless of whether we were responsible for the release or contamination or if our operations met previous standards in the industry at the time they were performed. Future environmental laws and regulations, including proposed legislation regulating climate change, may negatively impact our industry. The costs of compliance with these requirements may have an adverse impact on our financial condition, results of operations and cash flows.

Provisions of our articles of incorporation, bylaws and Nevada law will make it more difficult to effect a change in control of us, which could adversely affect the price of our common stock.

Nevada corporate law and our articles of incorporation and bylaws contain provisions that could delay, defer or prevent a change in control of us. These provisions include:

• allowing for authorized but unissued shares of common and preferred stock;

• a classified board of directors;

• requiring special stockholder meetings to be called only by our chairman of the board, our chief executive officer, a majority of the board or the holders of at least 10% of our outstanding stock entitled to vote at a special meeting;

• requiring removal of directors by a supermajority stockholder vote;

• prohibiting cumulative voting in the election of directors; and

• Nevada control share laws that may limit voting rights in shares representing a controlling interest in us.

These provisions could make an acquisition of us by means of a tender offer or proxy contest or removal of our incumbent directors more difficult. As a result, these provisions could make it more difficult for a third party to acquire us, even if doing so would benefit our stockholders, which may limit the price that investors are willing to pay in the future for shares of our common stock.

ITEM 1B.    UNRESOLVED STAFF COMMENTS

None.

ITEM 3.    LEGAL PROCEEDINGS

We are not a party to any legal proceedings which management believes will have a material adverse effect on our consolidated results of operations or financial condition.

ITEM 4.    MINE SAFETY DISCLOSURES

Not applicable.

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PART II

ITEM 5.    MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Our common stock is listed for trading on the New York Stock Exchange under the symbol “CRK.” The following table sets forth, on a per share basis for the periods indicated, the high and low sales prices by calendar quarter for the periods indicated as reported by the New York Stock Exchange.

		High		Low
2011 —	First Quarter	$	31.38	$	23.68
	Second Quarter	$	33.00	$	26.14
	Third Quarter	$	33.63	$	15.40
	Fourth Quarter	$	20.21	$	13.69
2012 —	First Quarter	$	17.79	$	11.05
	Second Quarter	$	18.54	$	12.56
	Third Quarter	$	20.46	$	14.95
	Fourth Quarter	$	21.16	$	14.40

As of February 28, 2013, we had 48,303,517 shares of common stock outstanding, which were held by 221 holders of record and approximately 7,900 beneficial owners who maintain their shares in “street name” accounts.

We have never paid cash dividends on our common stock. We presently intend to retain any earnings for the operation and expansion of our business and we do not anticipate paying cash dividends in the foreseeable future. Any future determination as to the payment of dividends will depend upon the results of our operations, capital requirements, our financial condition and such other factors as our board of directors may deem relevant. In addition, we are limited under our bank credit facility and by the terms of the indentures for our senior notes from paying or declaring cash dividends.

During the fourth quarter of 2012, we did not repurchase any of our equity securities.

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ITEM 6. SELECTED FINANCIAL DATA

The historical financial data presented in the table below as of and for each of the years in the five-year period ended December 31, 2012 are derived from our consolidated financial statements. The financial results are not necessarily indicative of our future operations or future financial results. The data presented below should be read in conjunction with our consolidated financial statements and the notes thereto and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” In 2008, we divested our interests in offshore operations which were conducted through our subsidiary Bois d’Arc Energy, Inc. (“Bois d’Arc”). Accordingly, we have adjusted the presentation of selected financial data to reflect the offshore operations on a discontinued basis.

Statement of Operations Data:

	Year Ended December 31,
	2008			2009			2010			2011			2012
	(In thousands, except per share data)
Revenues:
Oil and gas sales	$	563,749		$	292,583		$	349,141		$	434,367		$	431,923
Gain on sale of oil and gas properties		26,560			213			—			—			24,271
Total revenues		590,309			292,796			349,141			434,367			456,194
Operating expenses:
Production taxes		20,648			8,643			9,894			3,670			14,021
Gathering and transportation		3,910			8,696			17,256			28,491			27,312
Lease operating(1)		62,172			53,560			53,525			46,552			60,620
Exploration		5,032			907			2,605			10,148			61,449
Depreciation, depletion and amortization		182,179			213,238			213,809			290,776			365,286
General and administrative, net		32,266			39,172			37,200			35,172			33,798
Impairment of oil and gas properties		922			115			224			60,817			25,368
Loss on sale of oil and gas properties		—			—			26,632			57			—
Total operating expenses		307,129			324,331			361,145			475,683			587,854
Income (loss) from operations		283,180			(31,535	)		(12,004	)		(41,316	)		(131,660	)
Other income (expenses):
Gain on sale of marketable securities		—			—			16,529			35,118			26,621
Marketable securities impairment		(162,672	)		—			—			—			—
Realized gain from derivatives		—			—			—			—			9,766
Unrealized gain from derivatives		—			—			—			—			11,490
Interest and other income		1,656			378			499			790			944
Interest expense		(25,336	)		(16,086	)		(29,456	)		(42,688	)		(64,575	)
Total other income (expenses)		(186,352	)		(15,708	)		(12,428	)		(6,780	)		(15,754	)
Income (loss) from continuing operations before income taxes		96,828			(47,243	)		(24,432	)		(48,096	)		(147,414	)
Benefit from (provision for) income taxes		(38,611	)		10,772			4,846			14,624			47,354
Income (loss) from continuing operations		58,217			(36,471	)		(19,586	)		(33,472	)		(100,060	)
Income (loss) from discontinued operations		193,745	(2)		—			—			—			—
Net income (loss)	$	251,962		$	(36,471	)	$	(19,586	)	$	(33,472	)	$	(100,060	)
Basic net income (loss) per share:
Continuing operations	$	1.27		$	(0.81	)	$	(0.43	)	$	(0.73	)	$	(2.16	)
Discontinued operations		4.23			—			—			—			—
	$	5.50		$	(0.81	)	$	(0.43	)	$	(0.73	)	$	(2.16	)
Diluted net income (loss) per share:
Continuing operations	$	1.26		$	(0.81	)	$	(0.43	)	$	(0.73	)	$	(2.16	)
Discontinued operations		4.20			—			—			—			—
	$	5.46		$	(0.81	)	$	(0.43	)	$	(0.73	)	$	(2.16	)
Weighted average shares outstanding:
Basic		44,524			45,004			45,561			45,997			46,422
Diluted		44,813			45,004	(3)		45,561	(3)		45,997	(3)		46,422	(3)

(1) Includes ad valorem taxes.

(2) Includes gain of $158.1 million, net of income taxes of $85.3 million, from the sale of our offshore operations.

(3) Basic and diluted weighted average shares are the same due to the net loss.

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Balance Sheet Data:

	As of December 31,
	2008		2009		2010		2011		2012
	(In thousands)
Cash and cash equivalents	$	6,281	$	90,472	$	1,732	$	8,460	$	4,471
Property and equipment, net		1,444,715		1,576,287		1,816,248		2,509,845		2,470,053
Total assets		1,577,890		1,858,961		1,964,214		2,639,884		2,567,143
Total debt		210,000		470,836		513,372		1,196,908		1,324,383
Stockholders’ equity		1,062,085		1,066,111		1,068,531		1,037,625		933,534

Cash Flow Data:

	Year Ended December 31,
	2008			2009			2010			2011			2012
	(In thousands)
Cash flows provided by operating activities from continuing operations	$	450,533		$	176,257		$	311,662		$	284,904		$	262,229
Cash flows used for investing activities from continuing operations		(289,194	)		(348,777	)		(440,473	)		(952,086	)		(383,720	)
Cash flows provided by (used for) financing activities from continuing operations		(452,883	)		256,711			40,071			673,910			117,502
Cash flows provided by discontinued operations		292,260			—			—			—			—

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis should be read in conjunction with our selected historical consolidated financial data and our accompanying consolidated financial statements and the notes to those financial statements included elsewhere in this report. The following discussion includes forward-looking statements that reflect our plans, estimates and beliefs. Our actual results could differ materially from those discussed in these forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those discussed below and elsewhere in this report, particularly in “Risk Factors” and “Cautionary Note Regarding Forward-Looking Statements.”

Overview

We are an independent energy company engaged in the acquisition, exploration, development and production of oil and natural gas in the United States. We own interests in 1,643 producing oil and natural gas wells (914.5 net to us) and we operate 962 of these wells. In managing our business, we are concerned primarily with maximizing return on our stockholders’ equity. To accomplish this goal, we focus on profitably increasing our oil and natural gas reserves and production.

Our future growth will be driven primarily by acquisition, development and exploration activities. In 2012 our growth in production and proved reserves was primarily driven by our successful oil focused drilling activities. Under our current drilling budget, we plan to spend approximately $420.0 million in 2013 for development and exploration activities, which will primarily be focused on oil projects. We plan to drill 85 wells (58.1 net to us) in 2013, of which 75 wells (54.5 net to us) will target oil in our South Texas and West Texas regions and ten will target natural gas in our East Texas / North Louisiana region. However, we could increase or decrease the number of wells that we drill depending on oil and natural gas prices. We do not specifically budget for acquisitions as the timing and size of acquisitions are not predictable.

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We use the successful efforts method of accounting, which allows only for the capitalization of costs associated with developing proven oil and natural gas properties as well as exploration costs associated with successful exploration activities. Accordingly, our exploration costs consist of costs we incur to acquire and reprocess 3-D seismic data, impairments of our unevaluated leasehold where we were not successful in discovering reserves and the costs of unsuccessful exploratory wells that we drill.

We generally sell our oil and natural gas at current market prices at the point our wells connect to third party purchaser pipelines. We have entered into certain transportation and treating agreements with midstream and pipeline companies to transport a substantial portion of our natural gas production in North Louisiana to long-haul gas pipelines. We market our products several different ways depending upon a number of factors, including the availability of purchasers for the product, the availability and cost of pipelines near our wells, market prices, pipeline constraints and operational flexibility. Accordingly, our revenues are heavily dependent upon the prices of, and demand for, oil and natural gas. Oil and natural gas prices have historically been volatile and are likely to remain volatile in the future.

Our operating costs are generally comprised of several components, including costs of field personnel, insurance, repair and maintenance costs, production supplies, fuel used in operations, transportation costs, workover expenses and state production and ad valorem taxes.

Like all oil and natural gas exploration and production companies, we face the constant challenge of replacing our reserves. Although in the past we have offset the effect of declining production rates from existing properties through successful acquisition and drilling efforts, there can be no assurance that we will be able to continue to offset production declines or maintain production at current rates through future acquisitions or drilling activity. Our future growth will depend on our ability to continue to add new reserves in excess of production.

Our operations and facilities are subject to extensive federal, state and local laws and regulations relating to the exploration for, and the development, production and transportation of, oil and natural gas, and operating safety. Future laws or regulations, any adverse changes in the interpretation of existing laws and regulations or our failure to comply with existing legal requirements may have an adverse effect on our business, results of operations and financial condition. Applicable environmental regulations require us to remove our equipment after production has ceased, to plug and abandon our wells and to remediate any environmental damage our operations may have caused. The present value of the estimated future costs to plug and abandon our oil and gas wells and to dismantle and remove our production facilities is included in our reserve for future abandonment costs, which was $18.0 million as of December 31, 2012.

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Results of Operations

Year Ended December 31, 2012 Compared to Year Ended December 31, 2011

Our operating data for 2011 and 2012 is summarized below:

	Year Ended December 31,
	2011		2012
Net Production Data:
Natural gas (MMcf)		90,593		82,490
Oil (MBbls)		838		2,309
Natural gas equivalent (MMcfe)		95,622		96,345
Average Sales Price:
Oil ($/Bbl)		$95.73		$96.95
Oil including hedging ($/Bbl)(1)		$95.73		$101.18
Natural gas ($/Mcf)		$3.91		$2.52
Average equivalent price ($/Mcfe)		$4.54		$4.48
Average equivalent price including hedging ($/Mcfe)(1)		$4.54		$4.58
Expenses ($ per Mcfe):
Production taxes		$0.04		$0.15
Gathering and transportation		$0.30		$0.28
Lease operating(2)		$0.48		$0.63
Depreciation, depletion and amortization(3)		$3.00		$3.83

(1) Includes realized gains from derivatives of $9.8 million in 2012.

(2) Includes ad valorem taxes.

(3) Represents depreciation, depletion and amortization of oil and gas properties only.

Oil and gas sales.    Our oil and gas sales decreased $2.5 million (1%) in 2012 to $431.9 million from sales of $434.4 million in 2011. Our oil production in 2012 increased by 175% while our natural gas production decreased by 9% from our 2011 production levels. On an equivalent unit basis, our production in 2012 increased by 1% over 2011. Our successful drilling program grew our oil production which offset the decline in natural gas production. Prices realized for oil sales increased by 1% in 2012 as compared to 2011 while the average price we realized for natural gas sales decreased by 36% in 2012 as compared to 2011. Our oil hedging program generated $9.8 million in realized gains in 2012. Including the results of our hedging program, our average oil price in 2012 of $101.18 increased 6% above last year’s average price.

Production taxes.    Production taxes increased $10.3 million or 282% to $14.0 million in 2012 from $3.7 million in 2011. The increase in 2012 is due to the significant growth in our oil sales during the year. Much of our natural gas sales in 2011 and 2012 qualify for exemption from state production taxes.

Gathering and transportation.    Gathering and transportation costs in 2012 decreased $1.2 million (4%) to $27.3 million as compared to $28.5 million in 2011 due to the lower natural gas volumes that we produced in North Louisiana in 2012.

Lease operating expenses.    Our lease operating expenses, including ad valorem taxes, of $60.6 million in 2012 were $14.0 million or 30% higher than our operating expenses of $46.6 million in 2011. Our lease operating expense per Mcfe produced increased by 29% to $1.06 per Mcfe in 2012 as compared to $0.82 per Mcfe in 2011. The increase mainly reflects our growing oil production. Our oil wells are typically more costly to operate than our natural gas wells. Oil production comprised 14% of our total production in 2012 as compared to 5% in 2011.

Exploration expense.    We incurred $61.4 million in exploration expense in 2012 as compared to $10.1 million in 2011. Exploration expense in 2012 consisted of $61.3 million of impairments of

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unevaluated leasehold costs and $0.1 million for the acquisition of seismic data. Our 2011 exploration cost consisted of $9.8 million of impairments of unevaluated leasehold costs and $0.3 million for the acquisition of seismic data.

Depreciation, depletion and amortization expense (“DD&A”).    DD&A of $365.3 million was an increase of $74.5 million (26%) over DD&A of $290.8 million in 2011. Our DD&A rate per Mcfe produced averaged $3.83 in 2012 as compared to $3.00 for 2011. The increase in DD&A primarily resulted from increased development costs per Mcfe associated with the oil wells drilled in 2012, and the substantial decline in our proved natural gas reserves due to the low natural gas prices in 2012.

Impairment of oil and gas properties.    We recorded impairments to our oil and gas properties of $25.4 million and $60.8 million in 2012 and 2011, respectively. These impairments relate to fields where an impairment was indicated based on estimated future cash flows from the properties.

General and administrative expenses. General and administrative expense of $33.8 million for 2012 was 4% lower than general and administrative expense of $35.2 million for 2011. The decrease primarily reflects lower stock based compensation in 2012. Stock based compensation decreased by $1.3 million to $13.7 million in 2012 as compared to $15.0 million in 2011.

Interest expense.    Interest expense increased $21.9 million (51%) to $64.6 million in 2012 from interest expense of $42.7 million in 2011. The increase was primarily related to the increase in outstanding debt during 2012 including the issuance of $300.0 million in senior notes in June 2012. Average borrowings under our bank credit facility increased to $482.7 million in 2012 as compared to $121.4 million for 2011. The average interest rate on the outstanding borrowings under our credit facility of 3.0% in 2012 was higher than the interest rate of 2.2% in 2011. We capitalized interest of $20.9 million and $13.2 million in 2012 and 2011, respectively, which amounts reduced interest expense.

Income taxes.    The benefit from income taxes increased in 2012 to $47.4 million from $14.6 million in 2011 due to the higher net loss in 2012. Our effective tax rate of 32% in 2012 and 30% in 2011 differed from the federal income tax rate of 35% primarily due to the effect of nondeductible compensation and state income taxes.

Net loss.    We reported a loss of $100.1 million for 2012 as compared to a loss of $33.5 million for 2011. The loss per share for 2012 was $2.16 on weighted average shares outstanding of 46.4 million as compared to a loss per share of $0.73 for 2011 on weighted average shares outstanding of 46.0 million. The loss in 2012 was primarily related to the increase in DD&A expense and impairments of proved and unproved properties of $86.7 million ($56.3 million after income taxes) which were offset in part by gains on sales of properties of $24.3 million ($15.8 million after income taxes) and sales of marketable securities of $26.6 million ($17.3 million after income taxes) and also unrealized gains on our oil derivatives of $11.5 million ($7.5 million after tax). The loss in 2011 was primarily related to the impairments to proved and unproved properties in 2011 of $70.6 million ($45.9 million after income taxes) offset in part by gains on sales of marketable securities of $35.1 million ($22.8 million after income taxes).

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Year Ended December 31, 2011 Compared to Year Ended December 31, 2010

Our operating data for 2010 and 2011 is summarized below:

	Year Ended December 31,
	2010		2011
Net Production Data:
Natural gas (MMcf)		68,973		90,593
Oil (MBbls)		715		838
Natural gas equivalent (MMcfe)		73,262		95,622
Average Sales Price:
Oil ($/Bbl)		$68.35		$95.73
Natural gas ($/Mcf)		$4.35		$3.91
Average equivalent price ($/Mcfe)		$4.77		$4.54
Expenses ($ per Mcfe):
Production taxes		$0.14		$0.04
Gathering and transportation		$0.24		$0.30
Lease operating(1)		$0.72		$0.48
Depreciation, depletion and amortization(2)		$2.91		$3.00

(1) Includes ad valorem taxes.

(2) Represents depreciation, depletion and amortization of oil and gas properties only.

Oil and gas sales.    Our oil and gas sales increased $85.3 million (24%) in 2011 to $434.4 million from sales of $349.1 million in 2010. This increase resulted from higher natural gas production and higher prices realized for oil sales in 2011. Our production in 2011 increased by 31% over 2010’s production as production from new wells drilled in South Texas targeting the Eagle Ford shale and in North Louisiana targeting the Haynesville/Bossier shales exceeded declines from our existing producing properties. Prices realized for oil sales increased by 40% in 2011 as compared to 2010 while the average price we realized for natural gas sales decreased by 10% in 2011 as compared to 2010. During 2011 we drilled 87 wells (47.7 net to us), 62 of which were Haynesville or Bossier shale horizontal wells and 20 of which were Eagle Ford shale horizontal wells. At December 31, 2011 we had 23 wells (15.5 net to us) that were drilled in 2011 awaiting completion.

Production taxes.    Production taxes decreased $6.2 million (63%) to $3.7 million in 2011 from $9.9 million in 2010. Our Haynesville and Bossier shale wells, which comprise a large percentage of our production, qualify for exemption from certain state production taxes. The exempt wells together with the lower natural gas prices account for the decrease.

Gathering and transportation.    Gathering and transportation costs in 2011 increased $11.2 million (65%) to $28.5 million as compared to $17.3 million in 2010 due to the transportation costs related to the higher production from our Haynesville/Bossier shale properties in North Louisiana.

Lease operating expenses.    Our lease operating expenses, including ad valorem taxes, of $46.6 million in 2011 were $6.9 million or 13% lower than our operating expenses of $53.5 million in 2010. Our lease operating expense per Mcfe produced decreased by 33% to $0.48 per Mcfe in 2011 as compared to $0.72 per Mcfe in 2010. The decreases in lease operating expenses are primarily due to the sale of our higher operating cost properties in Mississippi in 2010.

Exploration expense.    We incurred $10.1 million in exploration expense in 2011 as compared to $2.6 million in 2010. Exploration expense in 2011 consisted of $9.8 million of impairments of unevaluated leasehold costs and $0.3 million for the acquisition of seismic data. Our 2010 exploration cost primarily related to costs incurred for the acquisition of seismic data.

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DD&A. DD&A of $290.8 million increased $77.0 million (36%) as compared to DD&A of $213.8 million in 2010. Our DD&A rate per Mcfe produced averaged $3.00 in 2011 as compared to $2.91 for 2010. The increase in DD&A primarily resulted from our 31% growth in production in 2011.

Impairment of oil and gas properties.    We recorded impairments to our oil and gas properties of $60.8 million and $0.2 million in 2011 and 2010, respectively. These impairments relate to fields where an impairment was indicated based on estimated future cash flows from the properties. The 2011 impairment is a result of lower anticipated natural gas prices.

General and administrative expenses.    General and administrative expense of $35.2 million for 2011 was 5% lower than general and administrative expense of $37.2 million for 2010. The decrease primarily reflects our lower personnel costs in 2011. Stock based compensation decreased by $2.4 million to $15.0 million in 2011 as compared to $17.4 million in 2010.

Interest expense.    Interest expense increased $13.2 million (45%) to $42.7 million in 2011 from interest expense of $29.5 million in 2010. The increase was primarily related to the increase in outstanding debt during 2011 including the issuance of $300.0 million in senior notes in March 2011. Average borrowings under our bank credit facility increased to $121.4 million in 2011 as compared to $70.0 million for 2010. The average interest rate on the outstanding borrowings under our credit facility of 2.2% in 2011 was unchanged from 2010. We capitalized interest of $13.2 million and $13.0 million in 2011 and 2010, respectively, which reduced interest expense. Interest expense in 2011 includes $1.1 million for the early retirement of our 6 ⁷/₈% senior notes which were due in March 2012.

Income taxes.    The benefit from income taxes increased in 2011 to $14.6 million from $4.8 million in 2010 due to the higher net loss in 2011. Our effective tax rate of 30% in 2011 and 20% in 2010 differed from the federal income tax rate of 35% primarily due to the effect of nondeductible compensation and state income taxes.

Net loss.    We reported a loss of $33.5 million for 2011 as compared to a loss of $19.6 million for 2010. The loss per share for 2011 was $0.73 on weighted average shares outstanding of 46.0 million as compared to a loss per share of $0.43 for 2010 on weighted average shares outstanding of 45.6 million. The loss in 2011 was primarily related to the impairments to proved and unproved properties in 2011 of $70.6 million ($45.9 million after income taxes) offset in part by gains on sales of marketable securities of $35.1 million ($22.8 million after income taxes). The loss in 2010 was primarily related to the loss on our divestiture of oil and gas properties in Mississippi of $25.8 million ($16.8 million after income taxes).

Liquidity and Capital Resources

Funding for our activities has historically been provided by our operating cash flow, debt or equity financings and asset dispositions. Our net cash provided by operating activities in 2012 totaled $262.2 million. Our other primary sources of funds in 2012 included $285.9 million of net proceeds from a senior notes offering and $204.4 million from sales of assets. In 2011, our net cash flow provided by operating activities totaled $284.9 million, while our other primary sources of funds included $293.4 million of net proceeds from a senior notes offering, $555.0 million of borrowings under our bank credit facility and $53.4 million of proceeds from sales of marketable securities. In 2010, our net cash flow provided by operating activities from continuing operations totaled $311.7 million. Our other primary source of funds in 2010 was $96.9 million of net proceeds from sales of oil and gas properties and marketable securities and $45.0 million of borrowings under our bank credit facility.

Our cash flow from operating activities in 2012 of $262.2 million represented a decrease of $22.7 million from our cash from operating activities of $284.9 million in 2011. Cash flow from

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operations excluding changes in working capital accounts of $261.3 million in 2012 decreased by $36.3 million or 12% as compared to $297.6 million in 2011 due to the lower revenues we received because of the decline in natural gas prices during 2012 which was partially offset by higher oil production. Our cash flow from operating activities in 2011 decreased by $26.8 million to $284.9 million as compared to $311.7 million in 2010 primarily due to changes in working capital at the end of 2011.

Our primary need for capital, in addition to funding our ongoing operations, relates to the acquisition, development and exploration of our oil and gas properties and the repayment of our debt. During 2012 our capital expenditures of $550.6 million decreased by $497.1 million as compared to 2011 capital expenditures of $1.0 billion due primarily to the acquisitions of proved and unproved properties we made in 2011. Capital expenditures in 2012 include $70.9 million spent to complete wells drilled in 2011. In 2011, our capital expenditures of $1.0 billion increased by $502.0 million as compared to 2010 capital expenditures of $545.7 million, mainly due to the acquisition of oil and gas properties in 2011.

Our annual capital expenditure activity is summarized in the following table:

	Year Ended December 31,
	2010		2011		2012
	(In thousands)
Exploration and development:
Acquisitions of proved oil and gas properties	$	—	$	218,661	$	3,235
Acquisitions of unproved oil and gas properties		134,728		255,699		29,677
Developmental leasehold costs		3,208		798		2,157
Development drilling		305,410		483,816		504,482
Exploratory drilling		85,140		82,028		5,317
Workovers and recompletions		5,648		6,516		3,728
		534,134		1,047,518		548,596	(1)
Other		11,516		225		1,984
Total	$	545,650	$	1,047,743	$	550,580	(1)

(1) Excludes reimbursements from joint venture partner for preformation well costs of $23.8 million.

The timing of most of our capital expenditures is discretionary because we have no material long-term capital expenditure commitments except for contracted drilling and completion services. Consequently, we have a significant degree of flexibility to adjust the level of our capital expenditures as circumstances warrant. We currently expect to spend approximately $445.0 million for development and exploration projects and lease acquisitions in 2013, which will be funded primarily by cash flows from operating activities, proceeds from asset sales and borrowings under our credit facility. Our operating cash flow and, therefore, our capital expenditures are highly dependent on oil and natural gas prices and, in particular, natural gas prices.

We do not have a specific acquisition budget for 2013 because the timing and size of acquisitions are unpredictable. Smaller acquisitions will generally be funded from operating cash flow. With respect to significant acquisitions, we intend to use borrowings under our bank credit facility, or other debt or equity financings to the extent available, to finance such acquisitions. The availability and attractiveness of these sources of financing will depend upon a number of factors, some of which will relate to our financial condition and performance and some of which will be beyond our control, such as prevailing interest rates, oil and natural gas prices and other market conditions. Lack of access to the debt or equity markets due to general economic conditions could impede our ability to complete acquisitions.

We have a $850.0 million bank credit facility with Bank of Montreal, as the administrative agent. The bank credit facility is a five-year revolving credit commitment that matures on November 30, 2015.

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Indebtedness under the bank credit facility is secured by all of our and our wholly owned subsidiaries’ assets and is guaranteed by all of our wholly owned subsidiaries. The bank credit facility is subject to borrowing base availability, which is redetermined semiannually based on the banks’ estimates of the future net cash flows of our oil and natural gas properties. As of December 31, 2012, the borrowing base was $570.0 million, $130.0 million of which was available. The borrowing base may be affected by the performance of our properties and changes in oil and natural gas prices. The determination of the borrowing base is at the sole discretion of the administrative agent and the bank group. Borrowings under the bank credit facility bear interest, based on the utilization of the borrowing base, at our option at either (1) LIBOR plus 1.75% to 2.75% or (2) the base rate (which is the higher of the administrative agent’s prime rate, the federal funds rate plus 0.5% or 30 day LIBOR plus 1.0%) plus 0.75% to 1.75%. A commitment fee of 0.5% is payable on the unused borrowing base. The bank credit facility contains covenants that, among other things, restrict the payment of cash dividends in excess of $50.0 million, limit the amount of consolidated debt that we may incur and limit our ability to make certain loans and investments. The only financial covenants are the maintenance of a ratio of current assets, including the availability under the bank credit facility, to current liabilities and maintenance of a leverage ratio. We were in compliance with these covenants as of December 31, 2012.

We have $300.0 million of 8 ³/₈% senior notes outstanding which are due October 15, 2017, $300.0 million of 7 ³/₄% senior notes outstanding which are due April 1, 2019 and $300.0 million of 9 ¹/₂% senior notes outstanding which are due June 15, 2020. All senior notes have semi-annual interest payment obligations, are unsecured obligations and are guaranteed by all of our material subsidiaries.

On January 1, 2011, we had $172.0 million in principal amount of 6 ⁷/₈% senior notes outstanding due in 2012 (the “2012 Notes”). We redeemed all of the 2012 Notes in 2011 for $172.4 million. The early extinguishment of the 2012 Notes resulted in a loss of $1.1 million. This loss is comprised of the premium paid for the redemption of the 2012 Notes, the costs incurred related to the tender offer, and the write-off of unamortized debt issuance costs related to the 2012 Notes.

We believe that our cash flow from operations and available borrowings under our bank credit facility will be sufficient to fund our operations and future growth as contemplated under our current business plan. However, if our plans or assumptions change or if our assumptions prove to be inaccurate, we may be required to seek additional capital. We cannot provide any assurance that we will be able to obtain such capital, or if such capital is available, that we will be able to obtain it on acceptable terms.

The following table summarizes our aggregate liabilities and commitments by year of maturity:

	2013		2014		2015		2016		2017		Thereafter		Total
	(In thousands)
Bank credit facility	$	—	$	—	$	440,000	$	—	$	—	$	—	$	440,000
8 3/8% senior notes		—		—		—		—		300,000		—		300,000
7 3/4% senior notes		—		—		—		—		—		300,000		300,000
9 1/2% senior notes		—		—		—		—		—		300,000		300,000
Interest on debt		88,843		88,843		87,846		76,875		71,641		99,126		513,174
Operating leases		1,983		2,012		2,038		1,994		2,021		6,740		16,788
Natural gas transportation agreements		9,416		6,840		4,074		1,696		1,277		1,968		25,271
Contracted drilling services		31,149		20,112		14,030		—		—		—		65,291
	$	131,391	$	117,807	$	547,988	$	80,565	$	374,939	$	707,834	$	1,960,524

Future interest costs are based upon the effective interest rates of our outstanding senior notes and the December 31, 2012 rate for our bank credit facility.

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We have obligations to incur future payments for dismantlement, abandonment and restoration costs of oil and gas properties. These payments are currently estimated to be incurred primarily after 2017. We record a separate liability for the fair value of these asset retirement obligations, which totaled $18.0 million as of December 31, 2012.

Federal Taxation

At December 31, 2012 we had U.S. federal net operating loss carryforwards of approximately $192.3 million and Louisiana state net operating loss carryforwards of approximately $536.4 million. Utilization of $36.9 million of our U.S. federal net operating loss carryforwards is limited to approximately $1.1 million per year pursuant to a prior change of control of an acquired company and a valuation allowance of $23.0 million has been established for the estimated U.S. federal net operating loss carryforwards that will not be utilized. Realization of the remaining U.S. federal net operating loss carryforwards requires Comstock to generate taxable income within the carryforward period. A valuation allowance of $288.0 million has been established against our Louisiana state net operating loss carryforwards due to the uncertainty of generating taxable income in the state of Louisiana prior to the expiration of the carryforward period.

Our federal income tax returns for the years subsequent to December 31, 2007 remain subject to examination. Our income tax returns in major state income tax jurisdictions remain subject to examination for various periods subsequent to December 31, 2007. We currently believe that our significant filing positions are highly certain and that all of our significant income tax filing positions and deductions would be sustained upon audit or the final resolution would not have a material effect on our consolidated financial statements. Therefore, we have not established any significant reserves for uncertain tax positions. Interest and penalties resulting from audits by tax authorities have been immaterial and are included in the provision for income taxes in the consolidated statements of operations.

Critical Accounting Policies

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires us to make estimates and use assumptions that can affect the reported amounts of assets, liabilities, revenues or expenses.

Successful efforts accounting.    We are required to select among alternative acceptable accounting policies. There are two generally acceptable methods for accounting for oil and gas producing activities. The full cost method allows the capitalization of all costs associated with finding oil and natural gas reserves, including certain general and administrative expenses. The successful efforts method allows only for the capitalization of costs associated with developing proven oil and natural gas properties as well as exploration costs associated with successful exploration projects. Costs related to exploration that are not successful are expensed when it is determined that commercially productive oil and gas reserves were not found. We have elected to use the successful efforts method to account for our oil and gas activities and we do not capitalize any of our general and administrative expenses.

Oil and natural gas reserve quantities.    The determination of depreciation, depletion and amortization expense is highly dependent on the estimates of the proved oil and natural gas reserves attributable to our properties. The determination of whether impairments should be recognized on our oil and gas properties is also dependent on these estimates, as well as estimates of probable reserves. Reserve engineering is a subjective process of estimating underground accumulations of oil and natural gas that cannot be precisely measured. The accuracy of any reserve estimate depends on the quality of available data, production history and engineering and geological interpretation and judgment. Because all reserve

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estimates are to some degree imprecise, the quantities of oil and natural gas that are ultimately recovered, production and operating costs, the amount and timing of future development expenditures and future oil and natural gas prices may all differ materially from those assumed in these estimates. The information regarding present value of the future net cash flows attributable to our proved oil and natural gas reserves are estimates only and should not be construed as the current market value of the estimated oil and natural gas reserves attributable to our properties. Thus, such information includes revisions of certain reserve estimates attributable to proved properties included in the preceding year’s estimates. Such revisions reflect additional information from subsequent activities, production history of the properties involved and any adjustments in the projected economic life of such properties resulting from changes in product prices. Any future downward revisions could adversely affect our financial condition, our borrowing ability, our future prospects and the value of our common stock.

Impairment of oil and gas properties.    We evaluate our properties on a field area basis for potential impairment when circumstances indicate that the carrying value of an asset may not be recoverable. If impairment is indicated based on a comparison of the asset’s carrying value to its undiscounted expected future net cash flows, then it is recognized to the extent that the carrying value exceeds fair value. A significant amount of judgment is involved in performing these evaluations since the results are based on estimated future events. Expected future cash flows are determined using estimated future prices based on market based forward prices applied to projected future production volumes. The projected production volumes are based on the property’s proved and risk adjusted probable oil and natural gas reserve estimates at the end of the period. The estimated future cash flows that we use in our assessment of the need for an impairment are based on market prices for oil and natural gas for the next three years, with a 5% escalation of prices for subsequent years. Prices are not escalated to levels that exceed observed historical market prices. Costs are also assumed to escalate at a rate that is based on our historical experience, currently estimated at 2% per annum. The oil and natural gas prices used for determining asset impairments will generally differ from those used in the standardized measure of discounted future net cash flows because the standardized measure requires the use of the average first day of the month historical price for the year. To the extent that oil and natural gas prices do not increase as anticipated in these assumptions or costs increase at a greater rate than assumed, certain of our evaluated properties which presently have a carrying value of $463.0 million may require impairment in the future. The amount of such impairments would be based on the write down of these properties to their then current estimated fair value. In addition to these properties, other properties may become impaired due to downward revisions in reserve or price estimates or for other reasons.

Asset retirement obligations.    We have obligations to remove tangible equipment and facilities and to restore land at the end of oil and gas production operations. Our removal and restoration obligations are primarily associated with plugging and abandoning wells and removing and disposing of any surface equipment used in production operations. Estimating the future restoration and removal costs is difficult and requires management to make estimates and judgments because most of the removal obligations are many years in the future. Asset removal technologies and costs are constantly changing, as are regulatory, political, environmental, safety and public relations considerations.

Stock-based compensation.    We follow the fair value based method in accounting for equity-based compensation. Under the fair value based method, compensation cost is measured at the grant date based on the fair value of the award and is recognized on a straight-line basis over the award vesting period.

Related Party Transactions

In recent years, we have not entered into any material transactions with our officers or directors apart from the compensation they are provided for their services. We also have not entered into any business transactions with our significant stockholders or any other related parties.

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ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Oil and Natural Gas Prices

Our financial condition, results of operations and capital resources are highly dependent upon the prevailing market prices of oil and natural gas. These commodity prices are subject to wide fluctuations and market uncertainties due to a variety of factors that are beyond our control. Factors influencing oil and natural gas prices include the level of global demand for oil, the foreign supply of oil and natural gas, the establishment of and compliance with production quotas by oil exporting countries, weather conditions which determine the demand for natural gas, the price and availability of alternative fuels and overall economic conditions. It is impossible to predict future oil and natural gas prices with any degree of certainty. Sustained weakness in oil and natural gas prices may adversely affect our financial condition and results of operations, and may also reduce the amount of oil and natural gas reserves that we can produce economically. Any reduction in our oil and natural gas reserves, including reductions due to price fluctuations, can have an adverse affect on our ability to obtain capital for our exploration and development activities. Similarly, any improvements in oil and natural gas prices can have a favorable impact on our financial condition, results of operations and capital resources. Based on our oil and natural gas production in 2012, a $1.00 change in the price per barrel of oil would have resulted in a change in our cash flow for such period by approximately $0.6 million and a $0.10 change in the price per Mcf of natural gas would have changed our cash flow by approximately $8.0 million.

We have entered into oil price swap agreements covering 2.2 million barrels of our expected 2013 oil production which fix the NYMEX West Texas Intermediate (“WTI”) price at $98.67 per barrel. As of December 31, 2012, our outstanding oil swap agreements had a fair value of $11.7 million. The change in the fair value of our oil swaps that would result from a 10% change in commodities prices at December 31, 2012 would be $12.9 million. Such a change in fair value could be a gain or a loss depending on whether prices increase or decrease.

Interest Rates

At December 31, 2012, we had $1.3 billion of long-term debt. Of this amount, $300.0 million bears interest at 8 ³/₈%, $300.0 million bears interest at a fixed rate of 7 ³/₄%, and $300.0 million bears interest at 9 ¹/₂%. The fair market value of our fixed rate debt as of December 31, 2012 was $942.0 million based on the market price of approximately 107% of the face amount. At December 31, 2012, we had $440.0 million outstanding under our bank credit facility, which is subject to variable rates of interest. Borrowings under the bank credit facility bear interest at a fluctuating rate that is tied to LIBOR or the corporate base rate, at our option. Any increase in these interest rates would have an adverse impact on our results of operations and cash flow. Based on borrowings outstanding at December 31, 2012, a 100 basis point change in interest rates would change our annual interest expense on our variable rate debt by approximately $4.4 million. We had no interest rate derivatives outstanding during 2012 or at December 31, 2012.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Our consolidated financial statements are included on pages F-1 to F-34 of this report.

We have prepared these financial statements in conformity with generally accepted accounting principles. We are responsible for the fairness and reliability of the financial statements and other financial data included in this report. In the preparation of the financial statements, it is necessary for us to make informed estimates and judgments based on currently available information on the effects of certain events and transactions.

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Our independent public accountants, Ernst & Young LLP, are engaged to audit our financial statements and to express an opinion thereon. Their audit is conducted in accordance with auditing standards generally accepted in the United States to enable them to report whether the financial statements present fairly, in all material respects, our financial position and results of operations in accordance with accounting principles generally accepted in the United States.

The audit committee of our board of directors is comprised of three directors who are not our employees. This committee meets periodically with our independent public accountants and management. Our independent public accountants have full and free access to the audit committee to meet, with and without management being present, to discuss the results of their audits and the quality of our financial reporting.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A.     CONTROLS AND PROCEDURES

Evaluation of Controls and Procedures.    Disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, or the Exchange Act) are designed to provide reasonable assurance that information required to be disclosed in reports we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosures.

We performed an evaluation of the effectiveness of our disclosure controls and procedures as of December 31, 2012. The evaluation was performed with the participation of senior management of each business segment and key corporate functions, and under the supervision of the Chief Executive Officer and Chief Financial Officer. As described below, management has identified a material weakness in our internal control over financial reporting, which is an integral component of our disclosure controls and procedures. As a result of this material weakness, we concluded that our disclosure controls and procedures were not effective as of December 31, 2012.

As part of the preparation of our financial statements for the year ended December 31, 2012, we undertook a review of our accounting for oil price derivative financial instruments. We use derivative financial instruments as a means of reducing our exposure to fluctuating commodity prices for oil and natural gas. During the quarters ended March 31, 2012, June 30, 2012 and September 30, 2012, we applied cash flow hedge accounting for our derivative financial instruments as provided for in Accounting Standards Codification Topic 815, Derivatives and Hedging (“ASC 815”). Accordingly, we included changes from period to period in the fair value of derivative financial instruments classified as cash flow hedges as increases or decreases to Accumulated Other Comprehensive Income (“AOCI”). In order to qualify for cash flow hedge accounting treatment, specific standards and contemporaneous documentation requirements must be met. We believed that we had met those requirements and that our hedge accounting treatment was permitted under ASC 815. However, in connection with preparing our 2012 Annual Report, and based upon discussions with Ernst & Young, LLP, our independent public accounting firm, we determined that our hedge documentation was not completed in a timely manner, and as a result our commodity derivative financial instruments did not qualify for hedge accounting treatment under ASC 815.

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In February 2013 the Audit Committee of our Board of Directors concluded that our previously issued consolidated financial statements contained a material error with respect to accounting for derivative financial instruments, and should be restated. Accordingly, we are restating the consolidated financial statements for each of the three months ended March 31, 2012, June 30, 2012 and September 30, 2012 to reflect the change in the fair value of our derivative financial instruments, as a separate component of other income (expenses) in our statements of operations rather than as a component of AOCI. We are also reclassifying the realized gains and losses from our derivative financial instruments as a component of other income (expenses) rather than as a component of oil and gas sales.

We have concluded, based on the circumstances involving the restatement of the financial statements for the three months ended March 31, 2012, June 30, 2012 and September 30, 2012, that a material weakness in internal control over financial reporting existed at December 31, 2012 with respect to the design of our controls over the timeliness of documentation required to designate our derivative financial instruments as cash flow hedges in accordance with ASC 815.

Management’s Report on Internal Control over Financial Reporting.    We are responsible for establishing and maintaining adequate internal control over financial reporting for the company. In order to evaluate the effectiveness of internal control over financial reporting, as required by Section 404 of the Sarbanes-Oxley Act, we conducted an assessment, including testing, using the criteria in Internal Control — Integrated Framework, issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Our system of internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

A “material weakness” is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected on a timely basis. The material weakness relating to the accounting for derivative financial instruments resulted in misstatements of the aforementioned accounts and disclosures that resulted in material misstatements in our interim financial statements. Because of this material weakness, management has concluded that we did not maintain effective internal control over financial reporting as of December 31, 2012. Our internal control over financial reporting as of December 31, 2012, has been audited by Ernst & Young, LLP, an independent registered public accounting firm, as stated in their report included herein.

Plans for Remediation of the Material Weakness.    In response to the material weakness, we did not account for derivative financial instruments as cash flow hedges under ASC 815 in the fourth quarter of 2012 and are recognizing realized gains and losses and changes in the fair value of our derivative financial instruments in current earnings as separate components of other income (losses). We are developing a remediation plan to address the material weakness described above. The remediation plan will include designing and implementing a control framework over entering into derivative financial instruments to ensure that our accounting for derivative financial instruments which was affected by the material control weakness is appropriate. The remediation plan will involve key leaders from across the organization, including the Chief Executive Officer, the Chief Financial Officer and our internal auditors. We will report quarterly and as needed to the Audit Committee of our Board of Directors on the progress made toward completion of the remediation plan.

We continue to monitor the effectiveness of our internal control over financial reporting with respect to our accounting for derivatives which was affected by the material weakness described above. We will

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perform additional procedures prescribed by management, including the use of manual mitigating control procedures, and we will employ any additional tools and resources deemed necessary to ensure that our financial statements continue to be fairly stated in all material respects.

Changes in Internal Control over Financial Reporting.    Except as noted above with respect to our discontinuation of cash flow hedge accounting in the fourth quarter of 2012, there were no changes in our internal control over financial reporting during the quarter ended December 31, 2012 that materially affected or are reasonably likely to materially affect our internal control over financial reporting. However, as described above under “Plans for Remediation of Material Weaknesses,” we have initiated a process to improve the control environment and to remedy the control weakness described herein.

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Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders

Comstock Resources, Inc.

We have audited Comstock Resources, Inc. and subsidiaries’ internal control over financial reporting as of December 31, 2012, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO criteria). Comstock Resources, Inc. and subsidiaries’ management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

A material weakness is a deficiency, or combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the company’s annual or interim financial statements will not be prevented or detected on a timely basis. The following material weakness has been identified and included in management’s assessment. Management has identified a material weakness in controls related to the Company’s accounting for derivative financial instruments at December 31, 2012. We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of Comstock Resources, Inc. and subsidiaries as of December 31, 2011 and 2012, and the related consolidated statements of operations, comprehensive loss, stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2012. This material weakness was considered in determining the nature, timing and extent of audit tests applied in our audit of the 2012 financial statements and this report does not affect our report dated February 28, 2013, which expressed an unqualified opinion on those financial statements.

In our opinion, because of the effect of the material weakness described above on the achievement of the objectives of the control criteria, Comstock Resources, Inc. and subsidiaries have not maintained effective internal control over financial reporting as of December 31, 2012, based on the COSO criteria.

Dallas, Texas

February 28, 2013

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ITEM 9B.     OTHER INFORMATION

None.

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

The information required by this item is incorporated herein by reference to “Business — Directors and Executive Officers” in this Form 10-K and to our definitive proxy statement which will be filed with the SEC within 120 days after December 31, 2012.

Code of Ethics.    We have adopted a Code of Business Conduct and Ethics that is applicable to all of our directors, officers and employees as required by New York Stock Exchange rules. We have also adopted a Code of Ethics for Senior Financial Officers that is applicable to our Chief Executive Officer and Senior Financial Officers. Both the Code of Business Conduct and Ethics and Code of Ethics for Senior Financial Officers may be found on our website at www.comstockresources.com. Both of these documents are also available, without charge, to any stockholder upon request to: Comstock Resources, Inc., Attn: Investor Relations, 5300 Town and Country Blvd., Suite 500, Frisco, Texas 75034, (972) 668-8800. We intend to disclose any amendments or waivers to these codes that apply to our Chief Executive Officer and senior financial officers on our website in accordance with applicable SEC rules. Please see the definitive proxy statement for our 2013 annual meeting, which will be filed with the SEC within 120 days of December 31, 2012, for additional information regarding our corporate governance policies.

ITEM 11. EXECUTIVE COMPENSATION

The information required by this item is incorporated herein by reference to our definitive proxy statement which will be filed with the SEC within 120 days after December 31, 2012.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The following table summarizes certain information regarding our equity compensation plans as of December 31, 2012:

	Number of securities to be issued upon exercise of outstanding options, warrants and rights	Weighted average exercise price of outstanding options, warrants and rights	Number of securities authorized for future issuance under equity compensation plans (excluding outstanding options, warrants and rights)
Equity compensation plans approved by stockholders	845,695(1)	$38.36(2)	1,607,372

(1) Includes performance share unit awards equivalent to 688,545 shares that would be issuable based upon achievement of the maximum awards under the terms of the performance share unit awards.

(2) Price reflects the grant date fair value of 157,150 stock options that are outstanding; excludes performance share units for which the price cannot be determined until the performance targets are met.

We do not have any equity compensation plans that were not approved by stockholders.

Further information required by this item is incorporated herein by reference to our definitive proxy statement which will be filed with the SEC within 120 days after December 31, 2012.

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ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTORS INDEPENDENCE

The information required by this item is incorporated herein by reference to our definitive proxy statement which will be filed with the SEC within 120 days after December 31, 2012.

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

The information required by this item is incorporated herein by reference to our definitive proxy statement which will be filed with the SEC within 120 days after December 31, 2012.

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) Financial Statements:

1. The following consolidated financial statements and notes of Comstock Resources, Inc. are included on Pages F-2 to F-34 of this report:

Report of Independent Registered Public Accounting Firm	F-2
Consolidated Balance Sheets as of December 31, 2011 and 2012	F-3
Consolidated Statements of Operations for the Years Ended December 31, 2010, 2011 and 2012	F-4
Consolidated Statements of Comprehensive Loss for the Years Ended December 31, 2010, 2011 and 2012	F-5
Consolidated Statements of Stockholders’ Equity for the Years Ended December 31, 2010, 2011 and 2012	F-6
Consolidated Statements of Cash Flows for the Years Ended December 31, 2010, 2011 and 2012	F-7
Notes to Consolidated Financial Statements	F-8

2.  All financial statement schedules are omitted because they are not applicable, or are immaterial or the required information is presented in the consolidated financial statements or the related notes.

(b)  Exhibits:

The exhibits to this report required to be filed pursuant to Item 15 (c) are listed below.

Exhibit No.	Description
3.1(a)	Restated Articles of Incorporation (incorporated by reference to Exhibit 3.1 to our Annual Report on Form 10-K for the year ended December 31, 1995).
3.1(b)	Certificate of Amendment to the Restated Articles of Incorporation dated July 1, 1997 (incorporated by reference to Exhibit 3.1 to our Quarterly Report on Form 10-Q for the quarter ended June 30, 1997).
3.2	Certificate of Amendment to the Restated Articles of Incorporation dated May 19, 2009 (incorporated by reference to Exhibit 3.1 to our Registration Statement on Form S-3 dated October 5, 2009).

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Exhibit No.	Description
3.3	Bylaws (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K dated November 8, 2011).
4.1	Indenture dated February 25, 2004 between Comstock, the guarantors and The Bank of New York Trust Company, N.A., Trustee for debt securities issued by Comstock Resources, Inc. (incorporated by reference to Exhibit 4.6 to our Annual Report on Form 10-K for the year ended December 31, 2003).
4.2	Indenture dated October 9, 2009 between Comstock, the guarantors and The Bank of New York Mellon Trust Company, N.A., Trustee for debt securities (incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K dated October 9, 2009).
4.3	First Supplemental Indenture, dated October 9, 2009 between Comstock, the guarantors and The Bank of New York Mellon Trust Company, N.A., Trustee for the 8 3/8% Senior Notes due 2017 (incorporated by reference to Exhibit 4.2 to our Current Report on Form 8-K dated October 9, 2009).
4.4	Second Supplemental Indenture dated April 30, 2010 between Comstock, the guarantors and The Bank of New York Mellon Trust Company, N.A., Trustee for the 8 3/8 Senior Notes due 2017 (incorporated by reference to our Annual Report on Form 10-K for the year ended December 31, 2010).
4.5	Third Supplemental Indenture dated March 14, 2011 between Comstock, the guarantors and The Bank of New York Mellon Trust Company, N.A., for the 7 3/4% Senior Notes due 2019 (incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K dated March 14, 2011).
4.6	Fourth Supplemental Indenture dated June 5, 2012 between Comstock, the guarantors and The Bank of New York Mellon Trust Company, N.A., for the 9 1/2% Senior Notes due 2020 (incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K dated June 7, 2012).
10.1#	Employment Agreement dated December 22, 2008 by and between Comstock and M. Jay Allison (incorporated by reference to Exhibit 99.1 to our Current Report on Form 8-K dated December 22, 2008).
10.2#	Employment Agreement dated December 22, 2008 by and between Comstock and Roland O. Burns (incorporated by reference to Exhibit 99.2 to our Current Report on Form 8-K dated December 22, 2008).
10.3#	Comstock Resources, Inc. 2009 Long-term Incentive Plan (incorporated by reference to Exhibit 99 to our Registration Statement on Form S-8 dated May 19, 2009).
10.4*#	First Amendment to the Comstock Resources, Inc. 2009 Long-term Incentive Plan.
10.5#	Form of Restricted Stock Agreement under the Comstock Resources, Inc. 2009 Long-term Incentive Plan (incorporated by reference to Exhibit 10.4 to our Annual Report on Form 10-K for the year ended December 31, 2009).
10.6*#	Form of Performance Share Unit Agreement under the Comstock Resources, Inc. 2009 Long-term Incentive Plan.
10.7	Lease between Stonebriar I Office Partners, Ltd. and Comstock Resources, Inc. dated May 6, 2004 (incorporated by reference to Exhibit 10.24 to our Annual Report on Form 10-K for the year ended December 31, 2004).
10.8	First Amendment to the Lease Agreement dated August 25, 2005, between Stonebriar I Office Partners, Ltd. and Comstock Resources, Inc. (incorporated by reference to Exhibit 10.20 to our Annual Report on Form 10-K for the year ended December 31, 2005).

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Exhibit No.	Description
10.9	Second Amendment to the Lease Agreement dated October 15, 2007 between Stonebriar I Office Partners, Ltd. and Comstock Resources, Inc. (incorporated by reference to Exhibit 10.10 to our Annual Report on Form 10-K for the year ended December 31, 2008).
10.10	Third Amendment to the Lease Agreement dated September 30, 2008 between Stonebriar I Office Partners, Ltd. and Comstock Resources, Inc. (incorporated by reference to Exhibit 10.11 to our Annual Report on Form 10-K for the year ended December 31, 2008).
10.11	Fourth Amendment to the Lease Agreement dated May 8, 2009 between Stonebriar I Office Partners, Ltd. and Comstock Resources, Inc. (incorporated by reference to Exhibit 10.2 to our Quarterly Report on Form 10-Q for the quarter ended June 30, 2009).
10.12	Fifth Amendment to the Lease Agreement dated June 15, 2011 between Stonebriar I Office Partners, Ltd. and Comstock Resources, Inc. (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended June 30, 2011).
10.13	Third Amended and Restated Credit Agreement, dated November 30, 2010, among Comstock Resources, Inc., as the borrower, the lenders from time to time thereto, Bank of Montreal, as administrative agent and issuing bank, Bank of America, N.A., as syndication agent and Comerica, JP Morgan Chase Bank, N.A., and Union Bank, N.A., as co-documentation agents (incorporated by reference to Exhibit 10.10 to our Annual Report on Form 10-K for the year ended December 31, 2010).
10.14	Assignment and First Amendment to Third Amended and Restated Credit Agreement dated October 31, 2011 (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended September 30, 2011).
10.15	Second Amendment and Waiver to Third Amended and Restated Credit Agreement, dated December 29, 2011, among Comstock Resources, Inc., as the borrower, the lenders from time to time thereto, and Bank of Montreal, as administrative agent (incorporated by reference to Exhibit 2.1 to our Current Report on Form 8-K dated December 29, 2011).
10.16	Third Amendment to Third Amended and Restated Credit Agreement, dated October 29, 2012, among Comstock Resources, Inc., as the borrower, the lenders from time to time thereto, and Bank of Montreal, as administrative agent (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q for the quarter ended September 30, 2012).
10.17*	Fourth Amendment to Third Amended and Restated Credit Agreement dated February 8, 2013, among Comstock Resources, Inc., as the borrower, the lenders from time to time thereto, and Bank of Montreal, as administrative agent.
10.18	Base Contract for Sale and Purchase of Natural Gas between Comstock Oil & Gas-Louisiana, LLC and BP Energy Company dated November 7, 2008, as amended by Third Amended and Restated Special Provisions dated January 5, 2010 (incorporated by reference to Exhibit 10.14 to our Annual Report on Form 10-K for the year ended December 31, 2009).
10.19	Purchase and Sale Agreement dated December 5, 2011 among Eagle Oil & Gas Co., certain other sellers and Comstock Oil & Gas, LP (incorporated by reference to Exhibit 2.1 to our Current Report on Form 8-K dated December 5, 2011).
21*	Subsidiaries of the Company.
23.1*	Consent of Ernst & Young LLP.
23.2*	Consent of Independent Petroleum Engineers.
31.1*	Chief Executive Officer certification under Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*	Chief Financial Officer certification under Section 302 of the Sarbanes-Oxley Act of 2002.

62

Exhibit No.	Description
32.1+	Chief Executive Officer certification under Section 906 of the Sarbanes-Oxley Act of 2002.
32.2+	Chief Financial Officer certification under Section 906 of the Sarbanes-Oxley Act of 2002.
99.1*	Report of Independent Petroleum Engineers on Proved Reserves as of December 31, 2012.
101.INS*	XBRL Instance Document
101.SCH*	XBRL Schema Document
101.CAL*	XBRL Calculation Linkbase Document
101.LAB*	XBRL Labels Linkbase Document
101.PRE*	XBRL Presentation Linkbase Document
101.DEF*	XBRL Definition Linkbase Document

    * Filed herewith.

    + Furnished herewith.

    # Management contract or compensatory plan document.

63

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

COMSTOCK RESOURCES, INC.
By:	/s/    M. JAY ALLISON
	M. Jay Allison President and Chief Executive Officer (Principal Executive Officer)

Date: February 28, 2013

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

/s/    M. JAY ALLISON M. Jay Allison	President, Chief Executive Officer and Chairman of the Board of Directors (Principal Executive Officer)	February 28, 2013
/s/    ROLAND O. BURNS Roland O. Burns	Senior Vice President, Chief Financial Officer, Secretary, Treasurer and Director (Principal Financial and Accounting Officer)	February 28, 2013
/s/    DAVID K. LOCKETT David K. Lockett	Director	February 28, 2013
/s/    CECIL E. MARTIN, JR. Cecil E. Martin, Jr.	Director	February 28, 2013
/s/    FREDERIC D. SEWELL Frederic D. Sewell	Director	February 28, 2013
/s/    DAVID W. SLEDGE David W. Sledge	Director	February 28, 2013
/s/    NANCY E. UNDERWOOD Nancy E. Underwood	Director	February 28, 2013

64

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

FINANCIAL STATEMENTS

INDEX

Report of Independent Registered Public Accounting Firm	F-2
Consolidated Balance Sheets as of December 31, 2011 and 2012	F-3
Consolidated Statements of Operations for the Years Ended December 31, 2010, 2011 and 2012	F-4
Consolidated Statements of Comprehensive Loss for the Years Ended December 31, 2010, 2011 and 2012	F-5
Consolidated Statements of Stockholders’ Equity for the Years Ended December  31, 2010, 2011 and 2012	F-6
Consolidated Statements of Cash Flows for the Years Ended December 31, 2010, 2011 and 2012	F-7
Notes to Consolidated Financial Statements	F-8

F-1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Stockholders

Comstock Resources, Inc.

We have audited the accompanying consolidated balance sheets of Comstock Resources, Inc. and subsidiaries as of December 31, 2011 and 2012, and the related consolidated statements of operations, comprehensive loss, stockholders’ equity and cash flows for each of the three years in the period ended December 31, 2012. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Comstock Resources, Inc. and subsidiaries at December 31, 2011 and 2012, and the consolidated results of their operations and cash flows for each of the three years in the period ended December 31, 2012, in conformity with accounting principles generally accepted in the United States.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the effectiveness of Comstock Resources, Inc.’s internal control over financial reporting as of December 31, 2012, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 28, 2013 expressed an adverse opinion thereon.

/s/    ERNST & YOUNG LLP

Dallas, Texas

February 28, 2013

F-2

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

As of December 31, 2011 and 2012

	December 31,
	2011			2012
	(In thousands)
ASSETS
Cash and Cash Equivalents	$	8,460		$	4,471
Accounts Receivable:
Oil and gas sales		47,082			36,150
Joint interest operations		6,651			5,608
Marketable Securities		47,642			12,312
Derivative Financial Instruments		459			11,651
Other Current Assets		2,796			6,954
Total current assets		113,090			77,146
Property and Equipment:
Unevaluated oil and gas properties		369,096			263,652
Oil and gas properties, successful efforts method		3,476,146			3,779,716
Other		18,062			19,301
Accumulated depreciation, depletion and amortization		(1,353,459	)		(1,592,616	)
Net property and equipment		2,509,845			2,470,053
Other Assets		16,949			19,944
	$	2,639,884		$	2,567,143
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts Payable	$	94,041		$	86,346
Deferred Income Taxes Payable		7,664			5,340
Accrued Expenses		85,502			47,372
Total current liabilities		187,207			139,058
Long-term Debt		1,196,908			1,324,383
Deferred Income Taxes Payable		201,705			149,901
Reserve for Future Abandonment Costs		13,997			17,994
Other Non-Current Liabilities		2,442			2,273
Total liabilities		1,602,259			1,633,609
Commitments and Contingencies
Stockholders’ Equity:
Common stock—$0.50 par, 75,000,000 shares authorized, 48,125,296 and 48,408,734 shares issued and outstanding at December 31, 2011 and 2012, respectively		24,063			24,204
Additional paid-in capital		468,709			480,595
Accumulated other comprehensive income		20,476			4,418
Retained earnings		524,377			424,317
Total stockholders’ equity		1,037,625			933,534
	$	2,639,884		$	2,567,143

The accompanying notes are an integral part of these statements.

F-3

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

For the Years Ended December 31, 2010, 2011 and 2012

	2010			2011			2012
	(In thousands, except per share amounts)
Oil and gas sales	$	349,141		$	434,367		$	431,923
Gain on sale of oil and gas properties		—			—			24,271
Total revenues		349,141			434,367			456,194
Operating expenses:
Production taxes		9,894			3,670			14,021
Gathering and transportation		17,256			28,491			27,312
Lease operating		53,525			46,552			60,620
Exploration		2,605			10,148			61,449
Depreciation, depletion and amortization		213,809			290,776			365,286
General and administrative, net		37,200			35,172			33,798
Impairment of oil and gas properties		224			60,817			25,368
Loss on sale of oil and gas properties		26,632			57			—
Total operating expenses		361,145			475,683			587,854
Operating loss		(12,004	)		(41,316	)		(131,660	)
Other income (expenses):
Gain on sale of marketable securities		16,529			35,118			26,621
Realized gain from derivatives		—			—			9,766
Unrealized gain from derivatives		—			—			11,490
Other income		499			790			944
Interest expense		(29,456	)		(42,688	)		(64,575	)
Total other income (expenses)		(12,428	)		(6,780	)		(15,754	)
Loss before income taxes		(24,432	)		(48,096	)		(147,414	)
Benefit from income taxes		4,846			14,624			47,354
Net loss	$	(19,586	)	$	(33,472	)	$	(100,060	)
Net loss per share:
Basic	$	(0.43	)	$	(0.73	)	$	(2.16	)
Diluted	$	(0.43	)	$	(0.73	)	$	(2.16	)
Weighted average shares outstanding:
Basic		45,561			45,997			46,422
Diluted		45,561			45,997			46,422

The accompanying notes are an integral part of these statements.

F-4

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

For the Years Ended December 31, 2010, 2011 and 2012

	2010			2011			2012
	(In thousands)
Net loss	$	(19,586	)	$	(33,472	)	$	(100,060	)
Unrealized hedging gains, net of provision for (benefit from) income taxes of $—, $161 and $(161)		—			298			(298	)
Net change in unrealized gains and losses on marketable securities, net of benefit from (provision for) income taxes of ($923), $6,543 and $8,487		1,711			(12,152	)		(15,760	)
Other comprehensive income (loss)		1,711			(11,854	)		(16,058	)
Comprehensive loss	$	(17,875	)	$	(45,326	)	$	(116,118	)

The accompanying notes are an integral part of these statements.

F-5

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

For the Years Ended December 31, 2010, 2011 and 2012

	Common Shares		Common Stock- Par Value		Additional Paid-in Capital			Retained Earnings			Accumulated Other Comprehensive Income			Total
	(In thousands)
Balance at December 31, 2009		47,104	$	23,552	$	434,505		$	577,435		$	30,619		$	1,066,111
Exercise of stock options		184		92		1,335			—			—			1,427
Stock-based compensation		418		209		17,168			—			—			17,377
Excess income taxes from stock-based compensation		—		—		1,491			—			—			1,491
Net loss		—		—		—			(19,586	)		—			(19,586	)
Other comprehensive income		—		—		—			—			1,711			1,711
Balance at December 31, 2010		47,706		23,853		454,499			557,849			32,330			1,068,531
Stock-based compensation		419		210		14,822			—			—			15,032
Excess income taxes from stock-based compensation		—		—		(612	)		—			—			(612	)
Net loss		—		—		—			(33,472	)		—			(33,472	)
Other comprehensive loss		—		—		—			—			(11,854	)		(11,854	)
Balance at December 31, 2011		48,125		24,063		468,709			524,377			20,476			1,037,625
Stock-based compensation		284		141		13,587			—			—			13,728
Excess income taxes from stock-based compensation		—		—		(1,701	)		—			—			(1,701	)
Net loss		—		—		—			(100,060	)		—			(100,060	)
Other comprehensive loss		—		—		—			—			(16,058	)		(16,058	)
Balance at December 31, 2012		48,409	$	24,204	$	480,595		$	424,317		$	4,418		$	933,534

The accompanying notes are an integral part of these statements.

F-6

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

For the Years Ended December 31, 2010, 2011 and 2012

	2010			2011			2012
	(In thousands)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$	(19,586	)	$	(33,472	)	$	(100,060	)
Adjustments to reconcile net loss to net cash provided by operating activities:
(Gain) loss on sale of assets		10,103			(35,061	)		(50,892	)
Deferred income taxes		(4,617	)		(14,652	)		(47,192	)
Dry hole costs and leasehold impairments		—			9,819			61,300
Impairment of oil and gas properties		224			60,817			25,368
Depreciation, depletion and amortization		213,809			290,776			365,286
Unrealized gains from derivatives		—			—			(11,490	)
Debt issuance cost and discount amortization		2,436			4,300			5,277
Stock-based compensation		17,377			15,032			13,728
Excess income taxes from stock-based compensation		(1,491	)		612			1,701
Decrease (increase) in accounts receivable		(4,432	)		(9,046	)		11,975
Decrease (increase) in other current assets		48,070			3,311			(4,309	)
Increase (decrease) in accounts payable and accrued expenses		49,769			(7,532	)		(8,463	)
Net cash provided by operating activities		311,662			284,904			262,229
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures		(537,400	)		(1,005,503	)		(588,111	)
Proceeds from sales of oil and gas properties		66,428			—			166,686
Proceeds from sales of marketable securities		30,499			53,417			37,705
Net cash used for investing activities		(440,473	)		(952,086	)		(383,720	)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings		110,000			970,000			515,912
Principal payments on debt		(68,000	)		(287,000	)		(390,000	)
Debt issuance costs		(4,847	)		(8,478	)		(6,709	)
Proceeds from issuance of common stock		1,427			—			—
Excess income taxes from stock-based compensation		1,491			(612	)		(1,701	)
Net cash provided by financing activities		40,071			673,910			117,502
Net increase (decrease) in cash and cash equivalents		(88,740	)		6,728			(3,989	)
Cash and cash equivalents, beginning of the year		90,472			1,732			8,460
Cash and cash equivalents, end of the year	$	1,732		$	8,460		$	4,471

The accompanying notes are an integral part of these statements.

F-7

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1) Summary of Significant Accounting Policies

Accounting policies used by Comstock Resources, Inc. reflect oil and natural gas industry practices and conform to accounting principles generally accepted in the United States of America.

Basis of Presentation and Principles of Consolidation

Comstock Resources, Inc. is engaged in oil and natural gas exploration, development and production, and the acquisition of producing oil and natural gas properties. The Company’s operations are primarily focused in Texas and Louisiana. The consolidated financial statements include the accounts of Comstock Resources, Inc. and its wholly owned or controlled subsidiaries (collectively, “Comstock” or the “Company”). During 2011 and 2012 the consolidated financial statements also include the accounts of a variable interest entity where the Company was the primary beneficiary of the arrangements. All significant intercompany accounts and transactions have been eliminated in consolidation. The Company accounts for its undivided interest in oil and gas properties using the proportionate consolidation method, whereby its share of assets, liabilities, revenues and expenses are included in its financial statements.

Reclassifications

Certain reclassifications have been made to prior periods’ financial statements to conform to the current presentation.

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual amounts could differ from those estimates. Changes in the future estimated oil and natural gas reserves or the estimated future cash flows attributable to the reserves that are utilized for impairment analysis could have a significant impact on the future results of operations.

Concentration of Credit Risk and Accounts Receivable

Financial instruments that potentially subject the Company to a concentration of credit risk consist principally of cash and cash equivalents, accounts receivable and derivative financial instruments. The Company places its cash with high credit quality financial institutions and its derivative financial instruments with financial institutions and other firms that management believes have high credit ratings. Substantially all of the Company’s accounts receivable are due from either purchasers of oil and gas or participants in oil and gas wells for which the Company serves as the operator. Generally, operators of oil and gas wells have the right to offset future revenues against unpaid charges related to operated wells. Oil and gas sales are generally unsecured. The Company’s policy is to assess the collectability of its receivables based upon their age, the credit quality of the purchaser or participant and the potential for revenue offset. The Company has not had any significant credit losses in the past and believes its accounts receivable are fully collectible. Accordingly, no allowance for doubtful accounts has been provided.

Marketable Securities

As of December 31, 2011 and 2012, the Company owned 1,806,000 and 600,000 shares, respectively, of Stone Energy Corporation common stock which was reflected in the consolidated balance sheets as marketable securities. As of December 31, 2011 and 2012, the cost basis of the marketable

F-8

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

securities was $16.6 million and $5.5 million, respectively. As of December 31, 2011 and 2012, the estimated fair value of the marketable securities was $47.6 million and $12.3 million, respectively, after recognizing unrealized gain after income taxes of $20.2 million and $4.4 million, respectively. The Company does not exert influence over the operating and financial policies of Stone, and has classified its investment in these shares as an available-for-sale security in the consolidated balance sheets. Available-for-sale securities are accounted for at fair value, with any unrealized gains and unrealized losses not determined to be other than temporary reported in the consolidated balance sheet within accumulated other comprehensive income as a separate component of stockholders’ equity. The Company utilizes the specific identification method to determine the cost of any securities sold. During 2010, 2011 and 2012 the Company sold 1,520,000, 1,991,000 and 1,206,000 shares of Stone common stock for proceeds of $30.5 million, $53.4 million and $37.7 million, respectively. Comstock realized gains before income taxes of $16.5 million, $35.1 million and $26.6 million on these sales during 2010, 2011 and 2012, respectively. The Company reviews its available-for-sale securities to determine whether a decline in fair value below the respective cost basis is other than temporary. Unrealized losses are charged against net earnings when a decline in fair value is determined to be other than temporary.

Other Current Assets

Other current assets at December 31, 2011 and 2012 consist of the following:

	As of December 31,
	2011		2012
	(In thousands)
Pipe and oil field equipment inventory	$	2,314	$	1,922
Production tax refunds receivable		—		1,830
Derivative settlements receivable		—		1,693
Drilling advances		—		1,160
Prepaid expenses		397		300
Other		85		49
	$	2,796	$	6,954

Fair Value Measurements

The Company holds or has held certain items that are required to be measured at fair value. These include cash equivalents held in bank accounts, marketable securities and derivative financial instruments in the form of oil price swap agreements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. A three-level hierarchy is followed for disclosure to show the extent and level of judgment used to estimate fair value measurements:

Level 1 – Inputs used to measure fair value are unadjusted quoted prices that are available in active markets for the identical assets or liabilities as of the reporting date.

Level 2 – Inputs used to measure fair value, other than quoted prices included in Level 1, are either directly or indirectly observable as of the reporting date through correlation with market data,

F-9

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

including quoted prices for similar assets and liabilities in active markets and quoted prices in markets that are not active. Level 2 also includes assets and liabilities that are valued using models or other pricing methodologies that do not require significant judgment since the input assumptions used in the models, such as interest rates and volatility factors, are corroborated by readily observable data from actively quoted markets for substantially the full term of the financial instrument.

Level 3 – Inputs used to measure fair value are unobservable inputs that are supported by little or no market activity and reflect the use of significant management judgment. These values are generally determined using pricing models for which the assumptions utilize management’s estimates of market participant assumptions.

The Company’s cash and marketable securities valuation are based on Level 1 measurements. The Company’s oil and natural gas price swap agreements were not traded on a public exchange, and their value was determined utilizing a discounted cash flow model based on inputs that are readily available in public markets and, accordingly, the valuation of these swap agreements was categorized as a Level 2 measurement.

The following table summarizes financial assets accounted for at fair value as of December 31, 2012:

	Carrying Value Measured at Fair Value at December 31, 2012		Level 1		Level 2
	(In thousands)
Assets measured at fair value on a recurring basis:
Cash held in bank accounts	$	4,471	$	4,471	$	—
Marketable securities		12,312		12,312		—
Derivative financial instruments		11,651		—		11,651
Total assets	$	28,434	$	16,783	$	11,651

As of December 31, 2012 the Company had oil price swap agreements for 2,160,000 barrels of oil to be produced in 2013 with a fair value of $11.7 million. The Company has recognized an asset for this amount, and has recognized corresponding unrealized gain which is included in other income (expenses) during 2012. At December 31, 2011 the Company had oil price swap agreements for 1,440,000 barrels of oil to be produced in 2012 with a fair value of $0.5 million. The Company recognized a current asset for this amount, and recognized an unrealized gain of $0.3 million, net of income taxes of $0.2 million, which was included in other comprehensive income.

F-10

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table summarizes the changes in the fair values of derivative financial instruments, which are Level 2 liabilities, for the years ended December 31, 2010, 2011 and 2012:

	2010		2011		2012
	(In thousands)
Balance beginning of period	$	—	$	—	$	459
Purchases and settlements (net)		—		—		(9,766)
Total realized or unrealized gains:
Realized gains included in earnings		—		—		9,766
Unrealized gains included in earnings		—		—		11,651
Unrealized gains included in other comprehensive income		—		459		(459)
Balance end of period	$	—	$	459	$	11,651

The following table presents the carrying amounts and estimated fair value of the Company’s other financial instruments as of December 31, 2011 and 2012:

	2011				2012
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(In thousands)
Long-term debt, including current portion	$	1,196,908	$	1,167,000	$	1,324,383	$	1,382,000

The fair market value of the Company’s fixed rate debt was based on the market prices as of December 31, 2011 and 2012, a Level 1 measurement. The fair value of the floating rate debt outstanding at December 31, 2011 and 2012 approximated its carrying value, a Level 2 measurement.

Property and Equipment

The Company follows the successful efforts method of accounting for its oil and gas properties. Acquisition costs for proved oil and gas properties, costs of drilling and equipping productive wells, and costs of unsuccessful development wells are capitalized and amortized on an equivalent unit-of-production basis over the life of the remaining related oil and gas reserves. Equivalent units are determined by converting oil to natural gas at the ratio of one barrel of oil for six thousand cubic feet of natural gas. This conversion ratio is not based on the price of oil or natural gas, and there may be a significant difference in price between an equivalent volume of oil versus natural gas. Cost centers for amortization purposes are determined on a field area basis. Costs incurred to acquire oil and gas leasehold are capitalized. The estimated future costs of dismantlement, restoration, plugging and abandonment of oil and gas properties and related facilities disposal are capitalized when asset retirement obligations are incurred and amortized as part of depreciation, depletion and amortization expense. The costs of unproved properties which are determined to be productive are transferred to proved oil and gas properties and amortized on an equivalent unit-of-production basis. Exploratory expenses, including geological and geophysical expenses and delay rentals for unevaluated oil and gas properties, are charged to expense as incurred. Unproved oil and gas properties are periodically assessed for impairment on a property by property basis, and any impairment in value is charged to exploration expense. During 2011 and 2012, impairment charges of $9.8 million and $61.3 million, respectively, were recognized in exploration expense related to certain leases that the Company no longer expects to drill on. Exploratory drilling costs are initially capitalized as unproved property but charged to expense if and when the well is determined not to have found commercial quantities of proved oil and gas reserves. Exploratory drilling costs are evaluated within a one-year period after the completion of drilling.

F-11

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The Company periodically assesses the need for an impairment of the costs capitalized for its oil and gas properties on a property or cost center basis. If impairment is indicated based on undiscounted expected future cash flows attributable to the property, then a provision for impairment is recognized to the extent that net capitalized costs exceed the estimated fair value of the property. The fair value is based upon estimated discounted future cash flows which are derived from Level 3 inputs. Expected future cash flows are determined using estimated future prices based on market based forward prices applied to projected future production volumes. Costs are also projected to escalate at a rate that is based upon the Company’s historical experience. The projected production volumes are based on the property’s proved and risk adjusted probable oil and natural gas reserve estimates at the end of the period. The oil and natural gas prices used for determining asset impairments will generally differ from those used in the standardized measure of discounted future net cash flows because the standardized measure requires the use of an average price based on the first day of each month of the preceding year and is limited to proved reserves. The Company recognized impairment charges related to its oil and gas properties of $0.2 million, $60.8 million and $25.4 million in 2010, 2011, and 2012, respectively.

Other property and equipment consists primarily of gas gathering systems, computer equipment, furniture and fixtures and an airplane which are depreciated over estimated useful lives ranging from three to 31 ¹/₂ years on a straight-line basis.

Other Assets

Other assets primarily consist of deferred costs associated with issuance of the Company’s senior notes and bank credit facility. These costs are amortized over the life of the senior notes and the life of the bank credit facility on a straight-line basis which approximates the amortization that would be calculated using an effective interest rate method.

Accrued Expenses

Accrued expenses at December 31, 2011 and 2012 consist of the following:

	As of December 31,
	2011		2012
	(In thousands)
Accrued drilling costs	$	29,291	$	14,050
Accrued interest payable		11,113		12,351
Advance from joint venture partner		—		7,286
Accrued oil and gas property acquisition costs		31,988		2,413
Other		13,110		11,272
	$	85,502	$	47,372

Reserve for Future Abandonment Costs

The Company’s asset retirement obligations relate to future plugging and abandonment costs of its oil and gas properties and related facilities disposal. The Company records a liability in the period in which an asset retirement obligation is incurred, in an amount equal to the discounted estimated fair value of the obligation that is capitalized. Thereafter, this liability is accreted up to the final retirement cost. Accretion of the discount is included as part of depreciation, depletion and amortization in the accompanying consolidated financial statements.

F-12

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table summarizes the changes in the Company’s total estimated liability:

	2010			2011			2012
	(In thousands)
Reserve for Future Abandonment Costs at beginning of the year	$	6,561		$	6,674		$	13,997
New wells placed on production		338			417			1,837
Changes in estimates		596			5,839			2,736
Acquisition liabilities assumed		—			741			—
Liabilities settled and assets disposed of		(1,212	)		(56	)		(1,304	)
Accretion expense		391			382			728
Reserve for Future Abandonment Costs at end of the year	$	6,674		$	13,997		$	17,994

Stock-based Compensation

The Company has stock-based employee compensation plans under which stock awards, comprised of restricted stock, stock options and performance share units are issued to employees and non-employee directors. The Company follows the fair value based method in accounting for equity-based compensation. Under the fair value based method, compensation cost is measured at the grant date based on the fair value of the award and is recognized on a straight-line basis over the award vesting period. Excess tax benefits on stock-based compensation are recognized as an adjustment to additional paid-in capital and as a part of cash flows from financing activities.

Segment Reporting

The Company presently operates in one business segment, the exploration and production of oil and natural gas.

Derivative Instruments and Hedging Activities

The Company accounts for derivative instruments (including certain derivative instruments embedded in other contracts) as either an asset or liability measured at its fair value. Changes in the fair value of derivatives are recognized currently in earnings unless specific hedge accounting criteria are met. The Company estimates fair value based on a discounted cash flow model and quotes obtained from the counterparties to the derivative contract. The fair value of derivative contracts that expire in less than one year are recognized as current assets or liabilities. Those that expire in more than one year are recognized as long-term assets or liabilities. Derivative financial instruments that are not accounted for as hedges are adjusted to fair value through income. If the derivative is designated as a cash flow hedge, changes in fair value are recognized in other comprehensive income until the hedged item is recognized in earnings.

Major Purchasers

In 2012 the Company had two purchasers of its oil and natural gas production that accounted for 42% and 27%, respectively, of total oil and gas sales. In 2011 the Company had two purchasers of its oil and natural gas production that accounted for 49% and 14%, respectively, of total oil and gas sales. In 2010 the Company had one purchaser of its oil and natural gas production that accounted for 39% of total oil and gas sales. The loss of any of these customers would not have a material adverse effect on the Company as there is an available market for its oil and natural gas production from other purchasers.

F-13

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Revenue Recognition and Gas Balancing

Comstock utilizes the sales method of accounting for oil and natural gas revenues whereby revenues are recognized at the time of delivery based on the amount of oil or natural gas sold to purchasers. Revenue is typically recorded in the month of production based on an estimate of the Company’s share of volumes produced and prices realized. Revisions to such estimates are recorded as actual results are known. The amount of oil or natural gas sold may differ from the amount to which the Company is entitled based on its revenue interests in the properties. The Company did not have any significant imbalance positions at December 31, 2011 or 2012. Sales of oil and natural gas generally occur at the wellhead. When sales of oil and gas occur at locations other than the wellhead, the Company accounts for costs incurred to transport the production to the delivery point as operating expenses.

General and Administrative Expenses

General and administrative expenses are reported net of reimbursements of overhead costs that are received from working interest owners of the oil and gas properties operated by the Company of $10.6 million, $10.5 million and $11.5 million in 2010, 2011 and 2012, respectively.

Income Taxes

The Company accounts for income taxes using the asset and liability method, whereby deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of assets and liabilities and their respective tax basis, as well as the future tax consequences attributable to the future utilization of existing tax net operating loss and other types of carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences and carryforwards are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that the change in rate is enacted.

Earnings Per Share

Basic earnings per share is determined without the effect of any outstanding potentially dilutive stock options and diluted earnings per share is determined with the effect of outstanding stock options that are potentially dilutive. Unvested share-based payment awards containing nonforfeitable rights to dividends are considered to be participatory securities and included in the computation of basic and diluted earnings per share pursuant to the two-class method. Performance share units (“PSUs”) represent the right to receive a number of shares of the Company’s common stock that may range from zero to up to three times the number of PSUs granted on the award date based on the achievement of certain performance measures during a performance period. The number of potentially dilutive shares related to PSUs is based on the number of shares, if any, which would be issuable at the end of the respective period, assuming that date was the end of the contingency period. The treasury stock method is used to measure the dilutive effect of PSUs.

F-14

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Basic and diluted earnings per share for 2010, 2011 and 2012 were determined as follows:

	2010								2011								2012
	Loss			Shares		Per Share			Loss			Shares		Per Share			Loss			Shares		Per Share
	(In thousands except per share data)
Net Loss	$	(19,586	)						$	(33,472	)						$	(100,060	)
Income Allocable to Unvested Stock Grants		—								—								—
Basic Net Loss Attributable to Common Stock	$	(19,586	)		45,561	$	(0.43	)	$	(33,472	)		45,997	$	(0.73	)	$	(100,060	)		46,422	$	(2.16	)
Effect of Dilutive Securities:
Stock Options		—			—					—			—					—			—
Performance Stock Units		—			—					—			—					—			—
Diluted Net Loss Attributable to Common Stock	$	(19,586	)		45,561	$	(0.43	)	$	(33,472	)		45,997	$	(0.73	)	$	(100,060	)		46,422	$	(2.16	)

At December 31, 2010, 2011 and 2012, 2,069,275, 2,114,520 and 1,960,835 shares of unvested restricted stock, respectively, are included in common stock outstanding as such shares have a nonforfeitable right to participate in any dividends that might be declared and have the right to vote. Weighted average shares of unvested restricted stock included in common stock outstanding were as follows:

	2010		2011		2012
	(In thousands)
Unvested restricted stock		1,715		1,683		1,737

All stock options, unvested stock and PSUs were anti-dilutive to earnings and excluded from weighted average shares used in the computation of earnings per share due to the net loss in each period.

Options to purchase common stock that were outstanding and that were excluded as anti-dilutive from determination of diluted earnings per share were as follows:

	2010		2011		2012
	(In thousands except per share data)
Weighted average anti-dilutive stock options		240		215		168
Weighted average exercise price	$	35.98	$	36.42	$	37.81

Supplementary Information With Respect to the Consolidated Statements of Cash Flows

For the purpose of the consolidated statements of cash flows, the Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.

F-15

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Cash payments made for interest and income taxes for the years ended December 31, 2010, 2011 and 2012, respectively, were as follows:

	2010			2011			2012
	(In thousands)
Cash Payments:
Interest payments	$	40,467		$	49,109		$	79,001
Income tax refunds	$	(48,575	)	$	(1,403	)	$	(58	)

The Company capitalizes interest on its unevaluated oil and gas property costs during periods when it is conducting exploration activity on this acreage. The Company capitalized interest of $13.0 million, $13.2 million and $20.9 million in 2010, 2011 and 2012, respectively, which reduced interest expense and increased the carrying value of its unevaluated oil and gas properties.

Comprehensive Loss

Comprehensive loss consists of the following:

	For the Year Ended December 31,
	2010			2011			2012
	(In thousands)
Net Loss	$	(19,586	)	$	(33,472	)	$	(100,060	)
Other comprehensive income (loss):
Realized gains on marketable securities reclassified to earnings, net of provision for income taxes of ($5,785) in 2010, ($12,291) in 2011 and ($9,318) in 2012		(10,744	)		(22,827	)		(17,303	)
Unrealized hedging gains, net of provision for (benefit from) income taxes of $161 in 2011 and ($161) in 2012		—			298			(298	)
Unrealized gains on marketable securities, net of provision for income taxes of $6,707 in 2010, $5,748 in 2011 and $831 in 2012		12,455			10,675			1,543
Total comprehensive loss	$	(17,875	)	$	(45,326	)	$	(116,118	)

The following table provides a summary of the amounts included in accumulated other comprehensive income, net of income taxes, for the years ended December 31, 2010, 2011 and 2012:

	Oil Price Swap Agreements			Marketable Securities			Total Accumulated Comprehensive Income
	(In thousands)
Balance as of December 31, 2009	$	—		$	30,619		$	30,619
Reclassification to earnings		—			(10,744	)		(10,744	)
Changes in value		—			12,455			12,455
Balance as of December 31, 2010		—			32,330			32,330
Reclassification to earnings		—			(22,827	)		(22,827	)
Changes in value		298			10,675			10,973
Balance as of December 31, 2011		298			20,178			20,476
Reclassification to earnings		(298	)		(17,303	)		(17,601	)
Changes in value		—			1,543			1,543
Balance as of December 31, 2012	$	—		$	4,418		$	4,418

F-16

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Subsequent Events

Subsequent events were evaluated through the issuance date of these consolidated financial statements.

(2)    Acquisitions and Dispositions of Oil and Gas Properties

On December 29, 2011, the Company completed an acquisition, from an unrelated party, of oil and gas properties in the Delaware Basin located in Reeves County in West Texas (the “Delaware Basin Acquisition”). Total cash consideration paid of $337.9 million was funded with borrowings under the Company’s bank credit facility. The Company acquired proved oil and gas reserves of 25.2 million barrels of oil equivalent and leases covering 43,591 net acres. The effective date of the acquisition was November 1, 2011. Concurrent with the Delaware Basin Acquisition, Comstock entered into a transaction structured as a reverse like-kind exchange in accordance with Section 1031 of the Internal Revenue Code. In connection with this reverse like-kind exchange, Comstock assigned the right to acquire ownership in the oil and gas properties that were acquired to a variable interest entity formed by an exchange accommodation titleholder. Comstock operated these properties pursuant to lease and management agreements with that entity, and had a call option which allowed the Company to terminate the exchange transaction at any time up and until the expiration date of the exchange. The exchange transaction was completed in May 2012 and the variable interest entity was then merged into a wholly owned subsidiary of the Company. Because the Company was the primary beneficiary of these arrangements, the properties acquired are included in its consolidated balance sheet as of December 31, 2011, and all revenues earned and expenses incurred related to the properties were included in the Company’s consolidated results of operations during the term of the agreements.

The purchase price allocation, including final post-closing adjustments finalized during 2012, was as follows:

	(In thousands)
Consideration paid:
Cash	$	337,896
Total consideration paid	$	337,896

Amounts recognized for the fair value of assets acquired and liabilities assumed were as follows:

	(In thousands)
Proved properties	$	205,758
Unproved properties		143,751
Asset retirement obligation		(741	)
Liabilities assumed		(10,872	)
Net fair value of properties acquired and liabilities assumed	$	337,896

On December 30, 2011, the Company acquired oil and gas properties in North Louisiana from a third party for $27.1 million. This acquisition included proved oil and gas reserves of 13 billion cubic feet of natural gas equivalent and leases covering 3,500 net acres.

F-17

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

Comstock considered the property acquisitions as business combinations and estimated the fair value of the properties as of the acquisition date. To estimate the fair value of the properties, the Company used a net asset value approach. The Company utilized a discounted cash flow model that took into account the following inputs to arrive at estimates of future net cash flows:

• Estimated ultimate recovery of oil and natural gas;

• Estimated future commodity prices based on NYMEX oil and natural gas futures prices adjusted for estimated location and quality differentials as well as related transportation costs;

• Estimated future production rates; and

• Estimated timing and amounts of future operating and development costs.

To estimate the fair value of proved properties, the Company discounted the future net cash flows using a market-based rate that the Company determined appropriate at the acquisition date for the various proved reserve categories. Due to the unobservable nature of the inputs, the fair values of the proved and unproved oil and gas properties are considered Level 3 fair value measurements.

During 2012, the Company completed the sale of certain oil and gas properties located in Tyler and Polk counties in South Texas and Lincoln Parish in North Louisiana. The Company received aggregate net proceeds of $119.8 million and recognized a total gain of $26.0 million from these transactions. Also during 2012, the Company completed the sale of certain non-operated oil and gas properties acquired as part of the Delaware Basin Acquisition and received net proceeds of $24.8 million. The Company accounted for the disposal of these properties as a retirement since they represented a small portion of the assets within one of its major oil and gas properties.

On July 30, 2012, the Company entered into a participation agreement with Kohlberg Kravis Roberts & Co L.P. (together with its affiliates, “KKR”) providing for the participation of KKR in Comstock’s future development of its Eagle Ford shale properties in South Texas. Under the terms of the participation agreement, KKR has the right to participate for one-third of Comstock’s working interest in wells drilled on the Company’s 28,160 net acres in exchange for KKR paying $25,000 per acre for the net acreage being acquired and one-third of the wells costs. Each well that KKR participates in is intended to earn KKR approximately one-third of the Company’s working interest in approximately 80 acres. The agreement applies to wells spud by the Company on or subsequent to March 31, 2012. The Company retains all of its interest in wells that were spud prior to March 31, 2012. Subject to certain conditions, KKR is obligated to acquire acreage for the first 100 wells drilled on the Company’s Eagle Ford Shale acreage after July 30, 2012 and can continue to participate in additional wells drilled on the acreage under the same terms. Comstock received $23.8 million from KKR to fund its participation in drilling activity before the closing on July 30, 2012. During 2012 the Company also received $8.7 million for acreage and facility costs for new wells drilled subsequent to the closing. The Company accounted for the receipt of these funds as a retirement since they represented a small portion of the costs within one of its major oil and gas properties. Formation costs of $1.7 million incurred in connection with this joint venture are reflected as a reduction to the realized gain on sale of oil and gas properties in the consolidated financial statements.

F-18

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

(3)    Oil and Gas Producing Activities

Set forth below is certain information regarding the aggregate capitalized costs of oil and gas properties and costs incurred by the Company for its oil and gas property acquisition, development and exploration activities:

Capitalized Costs

	As of December 31,
	2011			2012
	(In thousands)
Unproved properties	$	369,096		$	263,652
Proved properties:
Leasehold costs		1,162,094			1,125,460
Wells and related equipment and facilities		2,314,052			2,654,256
Accumulated depreciation depletion and amortization		(1,349,871	)		(1,588,046	)
	$	2,495,371		$	2,455,322

Costs Incurred

	For the Years Ended December 31,
	2010		2011		2012
	(In thousands)
Property Acquisitions:
Unproved property acquisitions	$	134,728	$	255,699	$	29,677
Proved property acquisitions		—		219,402		3,235
Development costs		315,041		496,506		514,629
Exploration costs		87,823		83,182		5,522
	$	537,592	$	1,054,789	$	553,063

(4)    Long-term Debt

Long-term debt is comprised of the following:

	As of December 31,
	2011			2012
	(In thousands)
Bank credit facility	$	600,000		$	440,000
8 3/8% senior notes due 2017		300,000			300,000
Discount related to 8 3/8% senior notes due 2017		(3,092	)		(2,556	)
7 3/4% senior notes due 2019		300,000			300,000
9 1/2% senior notes due 2020		—			300,000
Discount related to 9 1/2% senior notes due 2020		—			(13,061	)
	$	1,196,908		$	1,324,383

F-19

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The discount on the 8 ³/₈% and 9 ¹/₂% senior notes are being amortized over the life of the senior notes using the effective interest rate method.

The following table summarizes Comstock’s debt as of December 31, 2012 by year of maturity:

	2013		2014		2015		2016		2017		Thereafter		Total
	(In thousands)
Bank credit facility	$	—	$	—	$	440,000	$	—	$	—	$	—	$	440,000
8 3/8% senior notes		—		—		—		—		297,444		—		297,444
7 3/4% senior notes		—		—		—		—		—		300,000		300,000
9 1/2% senior notes		—		—		—		—		—		286,939		286,939
	$	—	$	—	$	440,000	$	—	$	297,444	$	586,939	$	1,324,383

Comstock has a $850.0 million bank credit facility with Bank of Montreal, as the administrative agent. The credit facility is a five year revolving credit commitment that matures on November 30, 2015. Indebtedness under the credit facility is secured by substantially all of Comstock’s assets and is guaranteed by all of its wholly owned subsidiaries. The credit facility is subject to borrowing base availability, which is redetermined semiannually based on the banks’ estimates of the Company’s future net cash flows of oil and natural gas properties. The borrowing base may be affected by the performance of Comstock’s properties and changes in oil and natural gas prices. The determination of the borrowing base is at the sole discretion of the administrative agent and the bank group. As of December 31, 2012, the borrowing base was $570.0 million, $130.0 million of which was available. Borrowings under the credit facility bear interest, based on the utilization of the borrowing base, at Comstock’s option at either (1) LIBOR plus 1.75% to 2.75% or (2) the base rate (which is the higher of the administrative agent’s prime rate, the federal funds rate plus 0.5% or 30 day LIBOR plus 1.0%) plus 0.75% to 1.75%. A commitment fee of 0.5% is payable annually on the unused borrowing base. The credit facility contains covenants that, among other things, restrict the payment of cash dividends in excess of $50.0 million, limit the amount of consolidated debt that Comstock may incur and limit the Company’s ability to make certain loans and investments. The only financial covenants are the maintenance of a ratio of current assets, including availability under the bank credit facility, to current liabilities and maintenance of a leverage ratio. The Company was in compliance with these covenants as of December 31, 2012.

On June 5, 2012 the Company issued $300.0 million of senior notes (the “2020 Notes”) pursuant to an underwritten public offering. The 2020 Notes are due on June 15, 2020 and bears interest at 9 ¹/₂%, which is payable semi-annually on each June 15 and December 15. Proceeds from the issuance of the 2020 Notes were used to pay down outstanding borrowings under the Company’s bank credit facility. On March 14, 2011, Comstock issued $300.0 million of senior notes (the “2019 Notes”) pursuant to an underwritten public offering. The 2019 Notes are due on April 1, 2019 and bear interest at 7 ³/₄%, which is payable semiannually on each April 1 and October 1. Comstock also has $300.0 million of 8 ³/₈% senior notes outstanding which mature on October 15, 2017 (the “2017 Notes”). Interest on the 2017 Notes is payable semiannually on each April 15 and October 15. The 2017, 2019 and 2020 Notes are unsecured obligations of Comstock and are guaranteed by all of Comstock’s material subsidiaries. Such subsidiary guarantors are 100% owned and all of the guarantees are full and unconditional and joint and several obligations. As of December 31, 2012, Comstock had no material assets or operations which are independent of its subsidiaries. There are no restrictions on the ability of Comstock to obtain funds from its subsidiaries through dividends or loans.

F-20

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

On January 1, 2011, Comstock had $172.0 million in principal amount of 6 ⁷/₈% senior notes outstanding due in 2012 (the “2012 Notes”). Comstock redeemed all of the 2012 Notes in March 2011 for $172.4 million. The early extinguishment of the 2012 Notes resulted in a loss of $1.1 million which is included in interest expense in the consolidated financial statements. This loss is comprised of the premium paid for the redemption of the 2012 Notes, the costs incurred related to the tender offer, and the write-off of unamortized debt issuance costs related to the 2012 Notes.

(5)    Commitments and Contingencies

Commitments

The Company rents office space and other facilities under noncancelable operating leases. Rent expense for the years ended December 31, 2010, 2011 and 2012 was $1.3 million, $1.1 million and $1.4 million, respectively. Minimum future payments under the leases are as follows:

	(In thousands)
2013	$	1,983
2014		2,012
2015		2,038
2016		1,994
2017		2,021
Thereafter		6,740
	$	16,788

As of December 31, 2012, the Company had commitments for contracted drilling rigs of $65.3 million through November 2015.

The Company has entered into natural gas transportation agreements through July 2019. Maximum commitments under these transportation agreements as of December 31, 2012 totaled $25.3 million.

Contingencies

From time to time, the Company is involved in certain litigation that arises in the normal course of its operations. The Company records a loss contingency for these matters when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. The Company does not believe the resolution of these matters will have a material effect on the Company’s financial position or results of operations and no material amounts are accrued relative to these matters at December 31, 2011 or 2012.

(6)    Stockholders’ Equity

The authorized capital stock of Comstock consists of 75 million shares of common stock, $.50 par value per share, and 5 million shares of preferred stock, $10.00 par value per share. The preferred stock may be issued in one or more series, and the terms and rights of such stock will be determined by the Board of Directors. There were no shares of preferred stock outstanding at December 31, 2011 or 2012.

F-21

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

(7)    Stock-based Compensation

The Company grants restricted shares of common stock, stock options and performance share units to key employees and directors as part of their compensation under the 2009 Long-term Incentive Plan. Future awards of stock options, restricted stock grants or other equity awards under the 2009 Long-term Incentive Plan are available with up to 1,607,372 shares of common stock.

During 2010, 2011 and 2012, the Company had $17.4 million, $15.0 million and $13.7 million, respectively, in stock-based compensation expense which is in general and administrative expenses. The excess income tax benefit realized from tax deductions associated with stock-based compensation recognized in additional paid in capital totaled $1.5 million in 2010 and excess tax provisions from tax deductions associated with stock-based compensation of $0.6 million and $1.7 million were recognized in additional paid in capital for the years ended December 31, 2011 and 2012, respectively.

Stock Options

The Company amortizes the fair value of stock options granted over the vesting period using the straight-line method. Compensation expense recognized for outstanding stock options was $0.4 million for the year ended December 31, 2010.

The Company has not issued any stock options since 2008. The following table summarizes information related to stock options outstanding at December 31, 2012:

Exercise Price	Weighted Average Remaining  Life (in years)		Number of Options Outstanding		Number of Options Exercisable
$32.50		2.9		51,500		51,500
$33.22		4.0		65,650		65,650
$54.36		0.4		40,000		40,000
				157,150		157,150

The following table summarizes information related to stock option activity under the Company’s incentive plans for the year ended December 31, 2012:

	Number of Options			Weighted Average Exercise  Price
Outstanding at January 1, 2012		203,150		$	36.64
Expired and forfeited		(46,000	)	$	30.74
Outstanding at December 31, 2012		157,150		$	38.36
Vested and Exercisable at December 31, 2012		157,150		$	38.36

	2010		2011		2012
	(In thousands)
Cash received for options exercised	$	1,427	$	—	$	—
Actual tax benefit realized	$	4,221	$	—	$	—

F-22

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

As of December 31, 2012, all compensation cost related to stock options had been recognized. Stock options outstanding at December 31, 2011 and 2012 had no intrinsic value based on the closing price for the Company’s common stock on December 31, 2011 and December 31, 2012. There were no stock option exercises in 2011 or 2012.

Restricted Stock

The fair value of restricted stock grants is amortized over the vesting period, generally one to four years, using the straight-line method. Total compensation expense recognized for restricted stock grants was $17.0 million, $15.0 million and $13.5 million for the years ended December 31, 2010, 2011 and 2012, respectively. The fair value of each restricted share on the date of grant is equal to its fair market price. A summary of restricted stock activity for the year ended December 31, 2012 is presented below:

	Number of Restricted Shares			Weighted Average Grant Price
Outstanding at January 1, 2012		2,114,520		$	31.25
Granted		303,530		$	15.49
Vested		(437,123	)	$	35.07
Forfeitures		(20,092	)	$	26.10
Outstanding at December 31, 2012		1,960,835		$	28.01

The per share weighted average fair value of restricted stock grants in 2010, 2011 and 2012 was $25.61, $18.31 and $15.49, respectively. Total unrecognized compensation cost related to unvested restricted stock of $19.1 million as of December 31, 2012 is expected to be recognized over a period of 2.3 years. The fair value of restricted stock which vested in 2010, 2011 and 2012 was $15.1 million, $9.3 million and $6.7 million, respectively.

Performance Share Units

The Company issues PSUs as part of its long-term equity incentive compensation. PSU awards can result in the issuance of common stock to the holder if certain performance criteria is met during a performance period. The performance periods consist of one year, two years and three years, respectively. The performance criteria for the PSUs are based on the Company’s annualized total stockholder return (“TSR”) for the performance period as compared with the TSR of certain peer companies for the performance period. The costs associated with PSUs are recognized as general and administrative expense over the performance periods of the awards.

The fair value of PSUs was measured at the grant date using a stochastic process method utilizing the Geometric Brownian Motion Model (“GBM Model”). A stochastic process is a mathematically defined equation that can create a series of outcomes over time. These outcomes are not deterministic in nature, which means that by iterating the equations multiple times, different results will be obtained for those iterations. In the case of the Company’s PSUs, the Company cannot predict with certainty the path its stock price or the stock prices of its peers will take over the future performance periods. By using a stochastic simulation, the Company can create multiple prospective total return pathways, statistically analyze these simulations, and ultimately make inferences to the most likely path the total return will take. As such, because future stock returns are stochastic, or probabilistic with some direction in nature, the stochastic method, specifically the GBM Model, is deemed an appropriate method by which to

F-23

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

determine the fair value of the PSUs. Significant assumptions used in this simulation include the Company’s expected volatility and a risk-free interest rate based on U.S. Treasury yield curve rates with maturities consistent with the vesting periods, as well as the volatilities for each of the Company’s peers. For the PSUs granted in 2012, the valuation inputs included a risk-free interest rate of 0.4% and a range of volatilities of 29% to 70%.

The Company granted 254,133 PSUs in 2012, all of which were outstanding at December 31, 2012, with a grant date fair value of $5.4 million, or $21.14 per unit. The number of awards assumes a one multiplier. The final number of shares of common stock issued may vary depending upon the performance multiplier, and can result in the issuance of zero to 688,545 shares of common stock based on the achieved performance ranges from zero to three.

Total compensation expense for PSUs was $0.2 million for the year ended December 31, 2012. As of December 31, 2012, there was $5.2 million of total unrecognized expense related to PSUs, which is being amortized through December 2015.

(8)   Retirement Plan

The Company has a 401(k) profit sharing plan which covers all of its employees. At its discretion, Comstock may match a certain percentage of the employees’ contributions to the plan. Matching contributions to the plan were $341,000, $323,000 and $365,000 for the years ended December 31, 2010, 2011 and 2012, respectively.

(9)   Income Taxes

The following is an analysis of the consolidated income tax benefit:

	2010			2011			2012
	(In thousands)
Current	$	(229	)	$	28		$	(162	)
Deferred		(4,617	)		(14,652	)		(47,192	)
	$	(4,846	)	$	(14,624	)	$	(47,354	)

Deferred income taxes are provided to reflect the future tax consequences or benefits of differences between the tax basis of assets and liabilities and their reported amounts in the financial statements using enacted tax rates. The difference between the Company’s customary rate of 35% and the effective tax rate on income before income taxes is due to the following:

	2010			2011			2012
	(In thousands)
Tax benefit at statutory rate	$	(8,551	)	$	(16,834	)	$	(51,595	)
Tax effect of:
Nondeductible compensation		4,253			2,753			2,545
State taxes, net of federal tax benefit		(343	)		(741	)		1,486
Net operating loss carryback adjustments		(369	)		—			—
Other		164			198			210
Total	$	(4,846	)	$	(14,624	)	$	(47,354	)

F-24

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

	2010			2011			2012
Statutory rate		35.0	%		35.0	%		35.0	%
Tax effect of:
Nondeductible compensation		(17.4	)		(5.7	)		(1.7	)
State taxes, net of federal tax benefit		1.4			1.5			(1.0	)
Net operating loss carryback adjustments		1.5			—			—
Other		(0.7	)		(0.4	)		(0.2	)
Effective tax rate		19.8	%		30.4	%		32.1	%

The tax effects of significant temporary differences representing the net deferred tax asset and liability at December 31, 2011 and 2012 were as follows:

	2011			2012
	(In thousands)
Current deferred tax liabilities:
Marketable securities	$	(7,503	)	$	(1,262	)
Derivative financial instruments		(161	)		(4,078	)
Net current deferred tax liability		(7,664	)		(5,340	)
Noncurrent deferred tax liabilities:
Property and equipment		(253,580	)		(247,062	)
Other assets		8,772			8,319
Net operating loss carryforwards		47,320			95,180
Alternative minimum tax carryforward		19,093			19,080
Valuation allowance on net operating loss carryforwards		(19,630	)		(23,009	)
Other		(3,680	)		(2,409	)
Net noncurrent deferred tax liability		(201,705	)		(149,901	)
Net deferred tax liability	$	(209,369	)	$	(155,241	)

At December 31, 2012, Comstock had the following carryforwards available to reduce future income taxes:

Types of Carryforward	Years of Expiration Carryforward	Amount
		(In thousands)
Net operating loss — U.S. federal	2017 — 2032	$	192,255
Net operating loss — Louisiana	2012 — 2027	$	536,365
Alternative minimum tax credits	Unlimited	$	19,080

Utilization of $36.9 million of the U.S. federal net operating loss carryforwards is limited to approximately $1.1 million per year pursuant to a prior change of control of an acquired company, and a

F-25

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

valuation allowance of $23.0 million, with a tax effect of $8.0 million, has been established for the estimated U.S. federal net operating loss carryforwards that will not be utilized. Realization of the remaining U.S. federal net operating loss carryforwards requires Comstock to generate taxable income within the carryforward period. A valuation allowance of $288.0 million, with a tax effect of $15.0 million, has been established against the Louisiana state net operating loss carryforwards due to the uncertainty of generating taxable income in the state of Louisiana prior to the expiration of the carryforward period.

The Company’s federal income tax returns for the years subsequent to December 31, 2007 remain subject to examination. The Company’s income tax returns in major state income tax jurisdictions remain subject to examination for various periods subsequent to December 31, 2007. State tax returns in two state jurisdictions are currently under review. The Company currently believes that resolution of these matters will not have a material impact on its financial statements. The Company currently believes that its significant filing positions are highly certain and that all of its other significant income tax filing positions and deductions would be sustained upon audit or the final resolution would not have a material effect on the consolidated financial statements. Therefore, the Company has not established any significant reserves for uncertain tax positions. Interest and penalties resulting from audits by tax authorities have been immaterial and are included in the provision for income taxes in the consolidated statements of operations.

(10)    Derivative Financial Instruments and Hedging Activities

Comstock periodically uses swaps, floors and collars to hedge oil and natural gas prices and interest rates. Swaps are settled monthly based on differences between the prices specified in the instruments and the settlement prices of futures contracts. Generally, when the applicable settlement price is less than the price specified in the contract, Comstock receives a settlement from the counterparty based on the difference multiplied by the volume or amounts hedged. Similarly, when the applicable settlement price exceeds the price specified in the contract, Comstock pays the counterparty based on the difference. Comstock generally receives a settlement from the counterparty for floors when the applicable settlement price is less than the price specified in the contract, which is based on the difference multiplied by the volumes hedged. For collars, generally Comstock receives a settlement from the counterparty when the settlement price is below the floor and pays a settlement to the counterparty when the settlement price exceeds the cap. No settlement occurs when the settlement price falls between the floor and cap.

During 2012, the Company hedged 1,710,000 barrels of its oil production at an average NYMEX West Texas Intermediate (“WTI”) oil price of $99.46 per barrel. As of December 31, 2012, the Company had the following outstanding commodity derivatives:

Commodity and Derivative Type	Weighted- Average Contract  Price		Volume (Barrels)		Contract Period
Oil Price Swap Agreements	$	98.67 per Bbl.		2,160,000		Jan. 2013 – Dec. 2013

The Company recognizes the realized gains and losses, and the unrealized gains and losses due to the change in the fair value of its derivative financial instruments, as separate components of other income (expenses). The Company had realized gains of $9.8 million on its oil swaps that settled during

F-26

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

2012. The estimated fair value of the Company’s derivative financial instruments, which equals their carrying value, was an asset of $11.7 million as of December 31, 2012, which is reflected as a current asset based on estimated settlement dates.

(11)   Supplementary Quarterly Financial Data (Unaudited)

	2011
	First			Second			Third			Fourth			Total
	(In thousands, except per share data)
Total oil and gas sales	$	88,038		$	112,451		$	119,422		$	114,456		$	434,367
Income (loss) from operations	$	(8,263	)	$	8,378		$	12,086		$	(53,517	)	$	(41,316	)
Net income (loss)	$	2,404		$	3,949		$	1,309		$	(41,134	)	$	(33,472	)
Net income (loss) per share:
Basic	$	0.05		$	0.08		$	0.03		$	(0.89	)	$	(0.73	)
Diluted	$	0.05		$	0.08		$	0.03		$	(0.89	)	$	(0.73	)
	2012
	First			Second			Third			Fourth			Total
	(In thousands, except per share data)
	(As Restated)			(As Restated)			(As Restated)
Total oil and gas sales	$	111,689		$	100,736		$	112,895		$	106,603		$	431,923
Income (loss) from operations	$	2,841		$	(8,046	)	$	(24,419	)	$	(102,036	)	$	(131,660	)
Net income (loss)	$	1,375		$	7,165		$	(30,449	)	$	(78,151	)	$	(100,060	)
Net income (loss) per share:
Basic	$	0.03		$	0.15		$	(0.66	)	$	(1.68	)	$	(2.16	)
Diluted	$	0.03		$	0.15		$	(0.66	)	$	(1.68	)	$	(2.16	)

Basic and diluted per share amounts are the same for each of the quarters ended December 31, 2011, September 30, 2012, December 31, 2012 and for the years ended December 31, 2011 and December 31, 2012 due to the net loss reported during each of these periods.

Results of operations include the following non-routine items of income (expense), which are presented before the effect of income taxes:

	2011
	First			Second		Third			Fourth			Total
	(In thousands, except per share data)
Gain on sales of marketable securities	$	21,249		$	8,480	$	2,484		$	2,905		$	35,118
Impairments of unproved oil and gas properties	$	(9,454	)	$	—	$	(364	)	$	—		$	(9,818	)
Impairments of proved oil and gas properties	$	—		$	—	$	—		$	(60,817	)	$	(60,817	)

F-27

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

	2012
	First			Second			Third			Fourth			Total
	(In thousands, except per share data)
Gain on sale of oil and gas properties	$	6,727		$	20,338		$	(2,794	)	$	—		$	24,271
Gain on sales of marketable securities	$	26,621		$	—		$	—		$	—		$	26,621
Impairments of unproved oil and gas properties	$	(1,315	)	$	—		$	(1,370	)	$	(58,615	)	$	(61,300	)
Impairments of proved oil and gas properties	$	(49	)	$	(5,301	)	$	—		$	(20,018	)	$	(25,368	)

The Company is restating its financial statements for each of the fiscal quarters ended March 31, 2012, June 30, 2012, and September 30, 2012 with respect to the accounting and disclosures for certain derivative financial transactions under Accounting Standards Codification Topic 815, Derivatives and Hedging (“ASC 815”). The Company determined that the formal documentation it had prepared to support its initial hedge designations for effectiveness in connection with the Company’s oil hedging program was not compliant with the technical documentation requirements to qualify for cash flow hedge accounting treatment in accordance with ASC 815, and as a result, the Company was not permitted to utilize hedge accounting treatment in the preparation of its financial statements. The restatements eliminate hedge accounting treatment which had been applied in 2012 and reflect other immaterial adjustments to oil and gas sales.

Under ASC 815, the fair value of hedge contracts is recognized in the Company’s consolidated balance sheet as an asset or liability, as the case may be, and the amounts received or paid under the hedge contracts are reflected in earnings during the period in which the underlying production occurs. If the hedge contracts qualify for cash flow hedge accounting treatment, the fair value of the hedge contract is recorded in “accumulated other comprehensive income”, and changes in the fair value do not affect net income in the period. If the hedge contract does not qualify for hedge accounting treatment, the change in the fair value of the hedge contract is reflected in earnings during the period as unrealized gain or loss from derivatives. Under the cash flow hedge accounting treatment used by the Company, the fair value of the hedge contracts were recognized in the consolidated balance sheet with the resulting unrealized gain or loss recorded initially in “accumulated other comprehensive income” and later reclassified through earnings when the hedged production impacted earnings. As a result of the determination that the designation documentation failed to meet the requirements necessary to utilize cash flow hedge accounting treatment, the unrealized gain or loss should have been recorded in the consolidated statements of operations as a component of earnings. The Company has also been recognizing realized gains and losses from its derivative financial instruments in oil and gas sales, and is reclassifying these amounts as a separate component of non-operating income and expense.

F-28

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following tables present the restated condensed consolidated statements of operations and statements of other comprehensive income (loss) for the three months ended March 31, 2012, June 30, 2012 and September 30, 2012 and the nine months ended September 30, 2012, the restated condensed consolidated balance sheets as of March 31, 2012, June 30, 2012 and September 30, 2012, the consolidated statement of stockholders’ equity for the nine months ended September 30, 2012 and the condensed consolidated statements of cash flows for the three months ended March 31, 2012, the six months ended June 30, 2012 and the nine months ended September 30, 2012:

CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

	Three Months Ended March 31, 2012									Three Months Ended June 30, 2012									Three Months  Ended September 30, 2012									Nine Months Ended September 30, 2012
	As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated
	(In thousands, except per share amounts)
Oil and gas sales	$	110,335		$	1,354		$	111,689		$	104,690		$	(3,954	)	$	100,736		$	117,129		$	(4,234	)	$	112,895		$	332,154		$	(6,834	)	$	325,320
Gain on sale of oil and gas properties		6,727			—			6,727			20,338			—			20,338			(2,794	)		—			(2,794	)		24,271			—			24,271
Total Revenues		117,062			1,354			118,416			125,028			(3,954	)		121,074			114,335			(4,234	)		110,101			356,425			(6,834	)		349,591
Total operating expenses		115,575			—			115,575			129,120			—			129,120			134,520			—			134,520			379,215			—			379,215
Operating income (loss)		1,487			1,354			2,841			(4,092	)		(3,954	)		(8,046	)		(20,185	)		(4,234	)		(24,419	)		(22,790	)		(6,834	)		(29,624	)
Other income (expenses):
Gain on sale of marketable securities		26,621			—			26,621			—			—			—			—			—			—			26,621			—			26,621
Realized gain (loss) from derivatives		—			(1,354	)		(1,354	)		—			2,719			2,719			—			3,293			3,293			—			4,658			4,658
Unrealized gain (loss) from derivatives		—			(10,187	)		(10,187	)		—			34,797			34,797			—			(11,112	)		(11,112	)		—			13,498			13,498
Other income		(23	)		262			239			545			(262	)		283			153			—			153			675			—			675
Interest expense		(13,237	)		—			(13,237	)		(14,529	)		—			(14,529	)		(17,535	)		—			(17,535	)		(45,301	)		—			(45,301	)
Total other income (expenses)		13,361			(11,279	)		2,082			(13,984	)		37,254			23,270			(17,382	)		(7,819	)		(25,201	)		(18,005	)		18,156			151
Income (loss) before income taxes		14,848			(9,925	)		4,923			(18,076	)		33,300			15,224			(37,567	)		(12,053	)		(49,620	)		(40,795	)		11,322			(29,473	)
Benefit from (provision for) income taxes		(7,989	)		4,441			(3,548	)		7,772			(15,831	)		(8,059	)		11,579			7,592			19,171			11,362			(3,798	)		7,564
Net income (loss)	$	6,859		$	(5,484	)	$	1,375		$	(10,304	)	$	17,469		$	7,165		$	(25,988	)	$	(4,461	)	$	(30,449	)	$	(29,433	)	$	7,524		$	(21,909	)
Net income (loss) per share:
Basic	$	0.14		$	(0.11	)	$	0.03		$	(0.22	)	$	0.37		$	0.15		$	(0.56	)	$	(0.10	)	$	(0.66	)	$	(0.63	)	$	0.16		$	(0.47	)
Diluted	$	0.14		$	(0.11	)	$	0.03		$	(0.22	)	$	0.37		$	0.15		$	(0.56	)	$	(0.10	)	$	(0.66	)	$	(0.63	)	$	0.16		$	(0.47	)
Weighted average shares outstanding:
Basic		46,372			—			46,372			46,426			—			46,426			46,443			—			46,443			46,414			—			46,414
Diluted		46,372			—			46,372			46,426			—			46,426			46,443			—			46,443			46,414			—			46,414

F-29

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(Unaudited)

	Three Months Ended March 31, 2012									Three Months Ended June 30, 2012
	As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated
	(In thousands, except per share amounts)
Net loss	$	6,859		$	(5,484	)	$	1,375		$	(10,304	)	$	17,469		$	7,165
Reclassified to earnings, net of provision for (benefit from) income taxes of $—, $161, $161, and $—, $—, $—		—			(298	)		(298	)		—			—			—
Unrealized hedging gains, net of provision for (benefit from) income taxes of $3,578, ($3,578), $— and ($12,087), $12,087, $—		(6,645	)		6,645			—			22,448			(22,448	)		—
Net change in unrealized gains and losses on marketable securities, net of benefit from (provision for) income taxes of $6,793, $—, $6,793, and $682, $—, $682		(12,612	)		—			(12,612	)		(1,268	)		—			(1,268	)
Other comprehensive income (loss)		(19,257	)		6,347			(12,910	)		21,180			(22,448	)		(1,268	)
Comprehensive income (loss)	$	(12,398	)	$	863		$	(11,535	)	$	10,876		$	(4,979	)	$	5,897

	Three Months Ended September 30, 2012									Nine Months Ended September 30, 2012
	As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated
	(In thousands, except per share amounts)
Net loss	$	(25,988	)	$	(4,461	)	$	(30,449	)	$	(29,433	)	$	7,524		$	(21,909	)
Reclassified to earnings, net of provision for (benefit from) income taxes of $—,$—, $— and $—, $161, $161		—			—			—			—			(298	)		(298	)
Unrealized hedging gains, net of provision for (benefit from) income taxes of $3,889, ($3,889), $— and ($4,620), $4,620, $—		(7,223	)		7,223			—			8,580			(8,580	)		—
Net change in unrealized gains and losses on marketable securities, net of benefit from (provision for) income taxes of $46, $—, $46 and $7,520, $—,$7,520		(86	)		—			(86	)		(13,966	)		—			(13,966	)
Other comprehensive income (loss)		(7,309	)		7,223			(86	)		(5,386	)		(8,878	)		(14,264	)
Comprehensive income (loss)	$	(33,297	)	$	2,762		$	(30,535	)	$	(34,819	)	$	(1,354	)	$	(36,173	)

F-30

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

	Three Months Ended March  31, 2012							Six Months Ended June 30, 2012							Nine Months  Ended September 30, 2012
	As Reported		Adjustments			As Restated		As Reported		Adjustments			As Restated		As Reported		Adjustments			As Restated
	(In thousands)
ASSETS
Cash and Cash Equivalents	$	3,750	$	—		$	3,750	$	3,505	$	—		$	3,505	$	2,569	$	—		$	2,569
Restricted Cash		9,549		—			9,549		—		—			—		—		—			—
Accounts Receivable		51,918		—			51,918		42,122		(1,235	)		40,887		51,907		(2,176	)		49,731
Marketable Securities		17,154		—			17,154		15,204		—			15,204		15,072		—			15,072
Assets Held for Sale		91,520		—			91,520		—		—			—		—		—			—
Derivative Financial Instruments		—		—			—		18,536		—			18,536		10,823		—			10,823
Other Current Assets		2,908		—			2,908		6,695		—			6,695		7,658		—			7,658
Total Current Assets		176,799		—			176,799		86,062		(1,235	)		84,827		88,029		(2,176	)		85,853
Net Property and Equipment		2,517,672		—			2,517,672		2,547,219		—			2,547,219		2,546,024		—			2,546,024
Derivative Financial Instruments		—		—			—		6,235		—			6,235		2,836		—			2,836
Other Assets		16,201		—			16,201		21,796		—			21,796		20,950		—			20,950
	$	2,710,672	$	—		$	2,710,672	$	2,661,312	$	(1,235	)	$	2,660,077	$	2,657,839	$	(2,176	)	$	2,655,663
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities	$	250,060	$	—		$	250,060	$	176,726		—		$	176,726		200,086	$	—		$	200,086
Long-term Debt		1,207,042		—			1,207,042		1,223,235		—			1,223,235		1,238,809		—			1,238,809
Deferred Income Taxes Payable		208,078		(863	)		207,215		203,530		2,881			206,411		190,784		(822	)		189,962
Reserve for Future Abandonment Costs		13,536		—			13,536		14,191		—			14,191		14,545		—			14,545
Derivative Financial Instruments		2,205		—			2,205		—		—			—		—		—			—
Other Non-Current Liabilities		2,394		—			2,394		2,337		—			2,337		2,301		—			2,301
Total Liabilities		1,683,315		(863	)		1,682,452		1,620,019		2,881			1,622,900		1,646,525		(822	)		1,645,703
Commitments and Contingencies
Stockholders’ Equity:
Common stock		24,058		—			24,058		24,081		—			24,081		24,081		—			24,081
Additional Paid-in Capital		470,844		—			470,844		473,881		—			473,881		477,199		—			477,199
Retained Earnings		531,236		(5,484	)		525,752		520,932		11,985			532,917		494,944		7,524			502,468
Accumulated Other Comprehensive Income		1,219		6,347			7,566		22,399		(16,101	)		6,298		15,090		(8,878	)		6,212
Total Stockholders’ Equity		1,027,357		863			1,028,220		1,041,293		(4,116	)		1,037,177		1,011,314		(1,354	)		1,009,960
	$	2,710,672	$	—		$	2,710,672	$	2,661,312	$	(1,235	)	$	2,660,077	$	2,657,839	$	(2,176	)	$	2,655,663

F-31

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY

(Unaudited)

	Common Shares		Common Stock-Par Value		Additional Paid-in Capital			Retained Earnings			Accumulated Other Comprehensive Income			Total
	(In thousands)
Balance at December 31, 2011		48,125	$	24,063	$	468,709		$	524,377		$	20,476		$	1,037,625
Stock-based compensation		37		18		10,171			—			—			10,189
Excess income taxes from stock-based compensation		—		—		(1,681	)		—			—			(1,681	)
Net loss – as restated		—		—		—			(21,909	)		—			(21,909	)
Other comprehensive loss – as restated		—		—		—			—			(14,264	)		(14,264	)
Balance at September 30, 2012 – as restated		48,162	$	24,081	$	477,199		$	502,468		$	6,212		$	1,009,960

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

	Three Months Ended March  31, 2012									Six Months Ended June  30, 2012									Nine Months  Ended September 30, 2012
	As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated
	(In thousands)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income ( loss)	$	6,859		$	(5,484	)	$	1,375		$	(3,445	)	$	11,985		$	8,540		$	(29,433	)	$	7,524		$	(21,909	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Gain on sale of assets		(33,348	)		—			(33,348	)		(53,686	)		—			(53,686	)		(50,892	)		—			(50,892	)
Deferred income taxes		8,072			(4,441	)		3,631			416			11,390			11,806			(11,151	)		3,798			(7,353	)
Dry hole costs and leasehold impairments		1,315			—			1,315			1,315			—			1,315			2,685			—			2,685
Impairment of oil and gas properties		49			—			49			5,350			—			5,350			5,350			—			5,350
Depreciation, depletion and amortization		79,097			—			79,097			169,180			—			169,180			268,410			—			268,410
Unrealized gains from derivatives		262			9,925			10,187			—			(24,610	)		(24,610	)		—			(13,498	)		(13,498	)
Debt issuance cost and discount amortization		944			—			944			2,103			—			2,103			3,689			—			3,689
Stock-based compensation		3,535			—			3,535			6,860			—			6,860			10,189			—			10,189
Excess income taxes from stock-based compensation		1,405			—			1,405			1,670			—			1,670			1,681			—			1,681
Decrease in accounts receivable		1,815			—			1,815			11,611			1,235			12,846			1,826			2,176			4,002
Increase in other current assets		(199	)		—			(199	)		(4,097	)		—			(4,097	)		(5,059	)		—			(5,059	)
Increase in accounts payable and accrued expenses		63,374			—			63,374			4,621			—			4,621			28,403			—			28,403
Net cash provided by operating activities		133,180			—			133,180			141,898			—			141,898			225,698			—			225,698
CASH FLOWS FROM INVESTING ACTIVITIES:
Net cash used for investing activities		(146,423	)		—			(146,423	)		(164,560	)		—			(164,560	)		(264,119	)		—			(264,119	)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net cash provided by financing activities		8,533			—			8,533			17,707			—			17,707			32,530			—			32,530
Net decrease in cash and cash equivalents		(4,710	)		—			(4,710	)		(4,955	)		—			(4,955	)		(5,891	)		—			(5,891	)
Cash and cash equivalents, beginning of the year		8,460			—			8,460			8,460			—			8,460			8,460			—			8,460
Cash and cash equivalents, end of the year	$	3,750		$	—		$	3,750		$	3,505		$	—		$	3,505		$	2,569		$	—		$	2,569

F-32

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

(12)   Oil and Gas Reserves Information (Unaudited)

Set forth below is a summary of the changes in Comstock’s net quantities of oil and natural gas reserves for each of the three years ended December 31, 2012:

	2010						2011						2012
	Oil (MBbls)			Natural Gas (MMcf)			Oil (MBbls)			Natural Gas (MMcf)			Oil (MBbls)			Natural Gas (MMcf)
Proved Reserves:
Beginning of year		7,214			682,389			4,219			1,025,633			32,099			1,118,632
Revisions of previous estimates		351			(6,137	)		8			(36,150	)		(397	)		(531,335	)
Extensions and discoveries		1,484			421,657			9,845			169,188			17,312			31,050
Purchases of minerals in place		—			—			18,865			50,554			—			—
Disposals of minerals in place		(4,115	)		(3,303	)		—			—			(7,486	)		(59,257	)
Production		(715	)		(68,973	)		(838	)		(90,593	)		(2,309	)		(82,490	)
End of year		4,219			1,025,633			32,099			1,118,632			39,219			476,600
Proved Developed Reserves:
Beginning of year		4,894			367,102			2,961			506,809			8,405			550,474
End of year		2,961			506,809			8,405			550,474			12,308			368,775

During 2012, the Company’s estimated quantities of proved undeveloped natural gas reserves decreased by 460 Bcf from total proved undeveloped reserves as of December 31, 2011 due to downward revisions related to the lower natural gas price that was used to determine estimated reserve quantities at December 31, 2012. Substantially all of the Company’s proved undeveloped natural gas reserves related to undrilled natural gas wells at December 31, 2011 were not economic at the lower natural gas price at December 31, 2012. The decrease in proved undeveloped natural gas reserves in 2012 resulted in an increase to the Company’s per unit amortization rate for its proved oil and gas properties and, accordingly, increased depletion, depreciation and amortization expense during 2012 as compared to previous periods.

The proved oil and gas reserves utilized in the preparation of the financial statements were estimated by Lee Keeling and Associates, independent petroleum consultants, in accordance with guidelines established by the Securities and Exchange Commission and the Financial Accounting Standards Board, which require that reserve reports be prepared under existing economic and operating conditions with no provision for price and cost escalation except by contractual agreement. All of the Company’s reserves are located onshore in the continental United States of America.

F-33

COMSTOCK RESOURCES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)

The following table sets forth the standardized measure of discounted future net cash flows relating to proved reserves at December 31, 2011 and 2012:

	2011			2012
	(In thousands)
Cash Flows Relating to Proved Reserves:
Future Cash Flows	$	7,656,654		$	5,064,519
Future Costs:
Production		(2,259,147	)		(1,585,309	)
Development and Abandonment		(2,174,656	)		(1,165,991	)
Future Income Taxes		(843,266	)		(552,843	)
Future Net Cash Flows		2,379,585			1,760,376
10% Discount Factor		(1,266,090	)		(976,159	)
Standardized Measure of Discounted Future Net Cash Flows	$	1,113,495		$	784,217

The standardized measure of discounted future net cash flows at the end of 2011 and 2012 was determined based on the simple average of the first of month market prices for oil and natural gas for each year. Prices were $92.93 per barrel of oil and $4.18 per Mcf of natural gas for 2011 and $94.61 per barrel of oil and $2.84 per Mcf of natural gas for 2012. Prices used in determining quantities of oil and natural gas reserves and future cash inflows from oil and natural gas reserves represent prices received at the Company’s sales point. These prices have been adjusted from posted or index prices for both location and quality differences. Future development and production costs are computed by estimating the expenditures to be incurred in developing and producing proved oil and gas reserves at the end of the year, based on year end costs and assuming continuation of existing economic conditions. Future income tax expenses are computed by applying the appropriate statutory tax rates to the future pre-tax net cash flows relating to proved reserves, net of the tax basis of the properties involved. The future income tax expenses give effect to permanent differences and tax credits, but do not reflect the impact of future operations.

The following table sets forth the changes in the standardized measure of discounted future net cash flows relating to proved reserves for the years ended December 31, 2010, 2011 and 2012:

	2010			2011			2012
	(In thousands)
Standardized Measure, Beginning of Year	$	426,590		$	606,136		$	1,113,495
Net change in sales price, net of production costs		141,570			1,061			(428,469	)
Development costs incurred during the year which were previously estimated		69,216			205,418			211,020
Revisions of quantity estimates		(5,433	)		(50,398	)		(892,645	)
Accretion of discount		48,911			79,763			148,697
Changes in future development and abandonment costs		(15,201	)		10,151			653,824
Changes in timing and other		66,657			(58,049	)		(16,176	)
Extensions and discoveries		321,909			540,937			467,080
Purchases of minerals in place		—			316,118			—
Sales of minerals in place		(50,651	)		—			(261,971	)
Sales, net of production costs		(268,466	)		(355,654	)		(341,803	)
Net changes in income taxes		(128,966	)		(181,988	)		131,165
Standardized Measure, End of Year	$	606,136		$	1,113,495		$	784,217

F-34

EX-10.4

Exhibit 10.4

FIRST AMENDMENT TO THE COMSTOCK RESOURCES, INC.

2009 LONG-TERM INCENTIVE PLAN

WHEREAS, Comstock Resources, Inc. (the “Company”) has previously adopted the 2009 Long-term Incentive Plan (the “Plan”), effective May 19, 2009; and

WHEREAS, the Board of Directors (the “Board”), at its meeting on December 12, 2013, approved an amendment to the Plan to prohibit the cash buy-out of “underwater” stock options; and

WHEREAS, Part V of the Plan authorizes the Compensation Committee (the “Committee”) to determine the performance measures for Performance Units awarded under the Plan; and

WHEREAS, as authorized in Part V of the Plan, the Committee approved the form of an amendment to the Plan at its meeting on December 13, 2012, establishing performance goals so that Performance Unit awards under the Plan will be deductible as “performance-based compensation” under Section 162(m) of the Internal Revenue Code of 1986, as amended;

NOW, THEREFORE, this First Amendment to the 2009 Long-term Incentive Plan is adopted, effective January 1, 2013:

I. Paragraph I.14(c) of the Plan is amended to provide as follows (added provisions are underlined):

(c) Neither the Board nor the Committee may, without further approval of the stockholders of the Company, reduce the exercise price of a Stock Option or the grant value of a Stock Appreciation Right, except in accordance with the adjustments pursuant to paragraph I.11. Neither the Board nor the Committee may accelerate the vesting of an Award of Restricted Stock, Restricted Stock Units or Performance Units, except in the event of a Participant’s death, Disability or Retirement. Neither the Board nor the Committee shall offer a cash buy-out of “underwater” Stock Options, and such buyouts of “underwater” Stock Options shall be prohibited.

II. The Plan is amended by adding Part VII to provide as follows:

VII. SECTION 162(m) PERFORMANCE AWARDS

The maximum aggregate Award of Performance Units that a Participant may receive in any one Fiscal Year shall be 750,000 Shares, if stated in shares of stock, or $10,000,000, if stated in cash, determined as of the date of the award.

Notwithstanding any other terms of this Plan, the vesting, payout or value (as determined by the Committee) of each Award other than a Stock Option or Stock Appreciation Right that, at the time of grant, the Committee intends to be performance-based compensation to a “covered employee,” as such terms are defined in Section 162(m) of the Code, shall be determined by the attainment of one or more performance goals as determined by the Committee in conformity with Section 162(m) of the Code. The Committee shall specify in writing, by resolution or otherwise, the Participants eligible to receive such an Award (which may be expressed in terms of a class of individuals) and the performance goal(s) applicable to such Awards within 90 days after the commencement of the period to which the performance goal(s) relate(s), or such earlier time as required to comply with Section 162(m) of the Code. No such Award shall be payable unless the Committee certifies in writing, by resolution or otherwise, that the performance goal(s) applicable to the Award were satisfied. In no case may the Committee increase the value of an Award of performance-based compensation above the maximum value determined under the performance formula by the attainment of the applicable performance goal(s), but the Committee retains the discretion to reduce the value below such maximum.

The performance goals, upon which the payment or vesting of an Award occurs that is intended to qualify as performance-based compensation, shall be limited to the following performance measures:

(a) Increases in, or levels of, net asset value; net asset value per share; pretax earnings; earnings before interest, taxes, depreciation, amortization, exploration and other non-cash expenses (“EBITDAX”); net income and/or earnings per share;

(b) Return on equity, return on assets or net assets, return on capital (including return on total capital or return on invested capital);

(c) Share price or stockholder return performance (including, but not limited to, growth measures and total stockholder return, which may be measured in absolute terms and/or in comparison to a group of peer companies or an index);

(d) Oil and gas reserve replacement, reserve growth and finding and development costs;

(e) Increases in, or levels of, oil and/or gas production;

(f) Performance of investments in oil and gas properties;

(g) Cash flow measures (including, but not limited to, cash flows from operating activities, discretionary cash flows, and cash flow return on investment, assets, equity or capital); and

(h) Decreases in the leverage ratio (defined as total debt over EBITDAX).

Any performance measure(s) may be used in comparison to the performance of a group of peer companies, or a published or special index that the Committee, in its sole discretion, deems appropriate. The Committee shall also have the authority to provide in Award Agreements for accelerated vesting of an Award based on the achievement of performance goal(s), a Participant’s Retirement, or a Change in Control.

The Committee may provide in any Award Agreement that any evaluation of attainment of a performance goal may include or exclude any of the following events that occurs during the relevant period: (a) asset write downs; (b) litigation judgments or settlements; (c) the effect of changes in tax laws, accounting principles, or other laws or regulations affecting reported results; (d) any reorganization or restructuring transactions; (e) extraordinary nonrecurring items as described in Accounting Principles Board Opinion No. 30 and/or in management’s discussion and analysis of financial condition and results of operations appearing in the Company’s Annual Report on Form 10-K for the applicable year; and (f) significant acquisitions or divestitures. To the extent such inclusions or exclusions affect Awards to covered employees, they shall be prescribed in a form that meets the requirements of Section 162(m) of the Code for deductibility.

In the event that applicable tax and/or securities laws change to permit discretion by the Committee to alter the governing performance measures without obtaining stockholder approval of such changes, the Committee shall have sole discretion to make such changes without obtaining stockholder approval. In addition, in the event that the Committee determines that it is advisable to grant Awards to covered employees that shall not qualify as performance-based compensation, the Committee may make such grants without satisfying the requirements of Section 162(m) of the Code.

EX-10.6

Exhibit 10.6

FORM OF PERFORMANCE-VESTED RESTRICTED STOCK UNIT AWARD

UNDER THE COMSTOCK RESOURCES, INC.

2009 LONG-TERM INCENTIVE PLAN

AGREEMENT made as of                     , by and between Comstock Resources, Inc., a Nevada corporation (“Company”) and                  (“Award Recipient”):

WHEREAS, the Company maintains the Comstock Resources, Inc. 2009 Long-term Incentive Plan (the “Plan”) under which the Company’s Board of Directors (“Board”) and the Compensation Committee of the Board may, among other things, award performance units to employees of the Company;

WHEREAS, pursuant to the Plan, the Board has awarded to the Award Recipient performance-vesting restricted stock units of common stock of the Company, conditioned upon the execution by the Company and the Award Recipient of an Agreement setting forth all the terms and conditions applicable to such award in accordance with the Plan;

THEREFORE, in consideration of the mutual promise(s) and covenant(s) contained herein, it is hereby agreed as follows:

1. AWARD OF PERFORMANCE UNITS. Under the terms of the Plan, the Compensation Committee has awarded to the Award Recipient a performance-vested restricted stock unit award (the “Units”) on                      (“Award Date”), covering a target of                  shares of Stock, $.50 par value (the “Target Award”), with a maximum payout of                  shares of Stock, $.50 par value (the “Maximum Award”), subject to the terms, conditions, and restrictions set forth in this Agreement. The shares subject to this restricted stock unit are not actual shares of Stock, but a promise to deliver actual shares upon the Vesting Dates set forth below, upon satisfaction of performance requirements and vesting conditions, and are credited to an unfunded bookkeeping account maintained by the Company. The Award Recipient shall have no rights as a stockholder, such as voting or dividend rights, except as set forth in Section 2.

The Award Recipient must remain employed on each Vesting Date, except as provided in Sections 4 and 5, in order to receive delivery of the number of shares of Stock that become vested through satisfaction of the performance vesting conditions. The Units may vest in three tranches, and are forfeited to the extent not earned as of the Certification Date for each tranche.

2. DIVIDEND EQUIVALENTS. As long as Units are outstanding, on each date that the Company pays a cash dividend to holders of common stock generally, the Company shall credit to Award Recipient a additional number of whole Units (the “Additional Units”) equal to the total number of Units and Additional Units previously credited to Award Recipient multiplied by the dollar amount of the cash dividend paid per share of Stock on such date, divided by the Fair Market Value of a share of Stock on such date. Any fractional Unit resulting from such calculation shall be included in the Additional Units. A report showing the number of Additional Units credited shall be sent to Award Recipient periodically. The Additional Units so credited shall be subject to the same terms and conditions as the Units to which the Additional Units relate, and the Additional Units shall be forfeited if the Units with respect to which the Additional Units were credited are forfeited.

3. PERFORMANCE-BASED VESTING. The number of Units that vest on each Vesting Date based on Company performance and are issuable as shares of Stock shall be determined using the table found in Appendix A and subject to the following provisions:

(i) Performance Periods. There are three (3) performance periods: the period commencing                      and ending on                 ; the period commencing                      and ending on                     ; and the period commencing                      and ending on                     .

(ii) Performance Measures. Performance vesting shall be based on the Company’s relative ranking of total shareholder return (“TSR”) among a group of peer group companies (the “Peer Group”), as set forth on Appendix B. The relative ranking is measured over each performance period and must be certified by the Compensation Committee (the “Certification Date”) prior to payment in order for any portion of the Award to vest. The Certification Date shall occur as soon as reasonably possible after each performance period but no later than the applicable Vesting Date.

(iii) Vesting Date. The Vesting Date for each tranche of Units shall be January 15 of the year following the end of the applicable performance period (the “Vesting Date”) so long as the New York Stock Exchange shall be open for trading on such date (or on the preceding business day if there shall have been no trading on the Vesting Date), or such earlier date during the year determined by the Compensation Committee on the Certification Date. The distribution to the Award Recipient, or in the case of his death, to the Award Recipient’s legal representative, of Stock in respect of vested Units shall be evidenced by a stock certificate, appropriate entry on the books of the Company or of a duly authorized transfer agent of

the Company, or other appropriate means as determined by the Company. Distribution of Stock to the Award Recipient shall occur within five (5) business days after the Vesting Date. Any portion of this tranche that is not vested based on the Compensation Committee’s certification will be forfeited. Notwithstanding the foregoing, Sections 4 and 5 provide certain circumstances in which the Units may vest before the Vesting Date with or without certification of performance by the Compensation Committee.

(iv) Peer Group. The Peer Group companies are shown on Appendix B. A company will be removed from the Peer Group if, during a performance period, it ceases to have a class of equity securities that is both registered under the Securities Exchange Act of 1934 and actively traded on a U.S. public securities market. If a company is removed from the Peer Group, its TSR shall be calculated by averaging its TSR over any completed years in the performance period and excluding it from calculation for any incomplete years.

(v) Definition of TSR. “TSR” as applied to a Peer Group company means stock price appreciation from the beginning to the end of the performance period, plus dividends and distributions made or declared (assuming such dividends or distributions are reinvested in the common stock of the Peer Group company) during the performance period, expressed as a percentage return. The stock price at the beginning and end of the performance periods will be the closing price on the relevant date, adjusted for stock splits or similar changes in capital structure.

4. TERMINATION OF EMPLOYMENT. If the Award Recipient terminates employment with the Company due to Retirement, death or Disability during a performance period, the Units will vest on a pro rated basis based on the actual level of achievement of the TSR goals, as certified by the Compensation Committee. The pro rata amount will be determined by multiplying the total number of Units otherwise determined by a fraction, the numerator of which shall be the number of complete months between January 1st of the year of employment termination and the date of employment termination, and the denominator of which shall be twelve. Shares of Stock will be distributed at the same time as other Participants. Termination of the Award Recipient’s employment with the Company for any other reason shall result in forfeiture of the award on the date of termination to the extent not vested. The Award Recipient may designate a beneficiary(ies) to receive the certificate representing that portion of the award vested upon death. The Award Recipient has the right to change such beneficiary designation at will.

5. CHANGE IN CONTROL. In the event of a Change in Control of the Company prior to                     , any outstanding unvested Units shall vest in full upon the effective time of the Change in Control.

6. WITHHOLDING TAXES. The Company shall have the right to retain and withhold from the Shares delivered upon vesting of Units a number of Shares having a market value not less than the minimum required withholding amount for taxes and cancel (in whole or in part) any such Shares so withheld in order to reimburse the Company for any such taxes.

7. CLAW-BACK PROVISIONS. In accordance with the Company’s claw-back policies, in the event of an accounting restatement applicable to a performance period due to material noncompliance with financial reporting requirements under the federal securities laws, the Compensation Committee shall have the right to seek to recover from any current or former executive at the vice president level or above who received Shares under this Agreement during the three-year period preceding the date on which the Company is required to prepare an accounting restatement, any excess compensation awarded as a result of the misstatement. The Company’s policy will be amended as required by final Security and Exchange Commission regulations interpreting the provisions of the Dodd-Frank Act, and as required by the listing standards of the New York Stock Exchange. Any amended policy will apply to this Agreement.

8. ADMINISTRATION. The Board shall have full authority and discretion (subject only to the authority granted to the Compensation Committee under this Award) to decide all matters relating to the administration and interpretation of the Plan and this Agreement. All such Board determinations shall be final, conclusive, and binding upon the Company, the Award Recipient, and any and all interested parties.

9. NO RIGHT TO CONTINUED EMPLOYMENT. Nothing in the Plan or this Agreement shall confer on an Award Recipient any right to continue in the employ of the Company or in any way affect the Company’s right to terminate the Award Recipient’s employment without prior notice at any time for any reason.

10. AMENDMENT(S). This Agreement shall be subject to the terms of the Plan as amended except that the award that is the subject of this Agreement may not in any way be restricted or limited by any Plan amendment or termination approved after the date of the award without the Award Recipient’s written consent.

11. NON-TRANSFERABLE. The Units may not be sold, assigned, transferred, pledged or otherwise encumbered, whether voluntarily or involuntarily, by operation of law or otherwise. Any attempt to transfer, anticipate, alienate, sell, assign, pledge or encumber the Units shall be void.

12. COMPLIANCE WITH SECTIONS 162(M) AND 409A OF THE INTERNAL REVENUE CODE. Compensation attributable to the Award is intended to constitute qualified performance-based compensation under Section 162(m) of the Code and the regulations thereunder. This Award shall be construed and administered by the Board in a manner consistent with this intent. This Agreement will be interpreted and applied so that the Award does not fail to meet, and is operated as a “short term deferral” which is exempt from, the requirements of Section 409A of the Internal Revenue Code and the regulations thereunder.

13. FORCE AND EFFECT. The various provisions of this Agreement are severable in their entirety. Any determination of invalidity or unenforceability of any one provision shall have no effect on the continuing force and effect of the remaining provisions.

14. GOVERNING LAWS. This Agreement shall be construed and enforced in accordance with and governed by the laws of the State of Texas.

15. SUCCESSORS. This Agreement shall be binding upon and inure to the benefit of the heirs and permitted successors and assigns of the respective parties.

16. NOTICES. Unless waived by the Company, any notice to the Company required under or relating to this Agreement shall be in writing and addressed to:

Comstock Resources, Inc.

5300 Town and Country Blvd.

Suite 500

Frisco, TX 75034

Attention: President or Secretary;

or to such other address as the Company maintains as its principal executive offices.

17. ENTIRE AGREEMENT. This Agreement and the Plan contain the entire understanding of the parties and shall not be modified or amended except in writing and duly signed by the parties. In the event of any conflict between the terms and provisions of this Agreement and those of the Plan, the terms and provisions of the Plan including, without limitation, those with respect to powers of the Board, shall prevail and be controlling. Capitalized terms used herein not otherwise defined shall have the meanings set forth in the Plan. No waiver by either party of any default under this Agreement shall be deemed a waiver of any later default.

IN WITNESS WHEREOF, the parties have signed this Agreement as of the date hereof.

COMSTOCK RESOURCES, INC.

By:

EX-10.17

Exhibit 10.17

FOURTH AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT AGREEMENT

This FOURTH AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT AGREEMENT (this “Amendment”) dated as of February 8, 2013, but effective as of December 31, 2012 (the “Amendment Effective Date”), is among COMSTOCK RESOURCES, INC. (the “Borrower”), the banks named on the signature pages hereto (together with their respective successors and assigns in such capacity, each as a “Lender”), and BANK OF MONTREAL, as administrative agent for the Lenders (in such capacity, together with its successors and assigns, the “Administrative Agent”).

PRELIMINARY STATEMENT

A. The Borrower, the Administrative Agent, the Lenders and certain other parties have entered into that certain Third Amended and Restated Credit Agreement dated as of November 30, 2010, as amended by that certain Assignment and First Amendment to Third Amended and Restated Credit Agreement dated as of October 31, 2011, as amended by that certain Second Amendment and Waiver to Third Amended and Restated Credit Agreement dated as of December 29, 2011, and as amended by that certain Third Amendment to Third Amended and Restated Credit Agreement dated as of October 29, 2012 (as amended, restated, modified or supplemented from time to time until the date hereof, the “Credit Agreement”).

B. The Borrower has requested that the Administrative Agent and the Lenders amend certain provisions of the Credit Agreement as set forth herein.

C. Subject to the terms and conditions of this Amendment, the Lenders, the Administrative Agent and the Issuing Bank have entered into this Amendment in order to effectuate such amendments and modifications to the Credit Agreement, as set forth herein.

NOW THEREFORE, in consideration of the foregoing and the mutual agreements set forth herein, the parties agree as follows:

Section 1. Definitions. Unless otherwise defined in this Amendment, each capitalized term used in this Amendment has the meaning assigned to such term in the Credit Agreement.

Section 2. Amendment of Credit Agreement.

(a) Section 7.13(a) is hereby deleted and replaced in its entirety with the following:

“(a) Leverage Ratio. Permit or suffer the ratio of (i) Total Debt to (ii) EBITDAX, as of the last day of any period of four consecutive fiscal quarters ending on March 31, June 30, September 30 and December 31 of each calendar year, to be greater than, (x) for the four-fiscal quarter period ending December 31, 2012, through and including the four-fiscal quarter period ending June 30, 2013, 4.25 to 1.00; and (y) for any four-fiscal quarter period ending September 30, 2013, and thereafter, 4.00 to 1.00.”

Section 3. Ratification. The Borrower hereby ratifies and confirms all of the Obligations under the Credit Agreement (as amended or waived hereby) and the other Loan Documents, and, in particular, affirms that the terms of the Security Documents secure, and will continue to secure, all Obligations, after giving effect to this Amendment.

Section 4. Effectiveness. This Amendment shall become effective on the Amendment Effective Date upon satisfaction of all of the conditions set forth in this Section 4:

(a) The Administrative Agent shall have received duly executed counterparts of this Amendment from the Borrower, the Administrative Agent and each Lender;

(b) The Borrower shall have made payment of all fees and expenses due and owing under the Credit Agreement and under any separate fee agreement entered into by the parties pursuant to Section 2.10 of the Credit Agreement;

(c) The Borrower shall have confirmed and acknowledged to the Administrative Agent and the Lenders, and by its execution and delivery of this Amendment, the Borrower does hereby confirm and acknowledge to the Administrative Agent and the Lenders, that (i) the execution, delivery and performance of this Amendment has been duly authorized by all requisite corporate action on the part of the Borrower; (ii) the Credit Agreement (as amended hereby) and each other Loan Document constitute valid and legally binding agreements enforceable against the Borrower and each other Loan Party that is a party thereto in accordance with their respective terms, except as such enforceability may be limited by bankruptcy, insolvency, reorganization, moratorium, fraudulent transfer or other similar laws relating to or affecting the enforcement of creditors’ rights generally and by general principles of equity, (iii) the representations and warranties by the Borrower and the other Loan Parties contained in the Credit Agreement and in the other Loan Documents are true and correct on and as of the date hereof in all material respects as though made as of the date hereof, and (iv) no Default or Event of Default exists under the Credit Agreement or any of the other Loan Documents.

Section 5. Governing Law. This Amendment shall be governed by, and construed in accordance with, the laws of the State of New York.

Section 6. Miscellaneous. (a) On and after the effectiveness of this Amendment, each reference in each Loan Document to “this Amendment”, “this Note”, “this Mortgage”, “hereunder”, “hereof” or words of like import, referring to such Loan Document, and each reference in each other Loan Document to “the Credit Agreement”, “the Notes”, “the Mortgages”, “thereunder”, “thereof” or words of like import referring to the Credit Agreement, the Notes, or the Mortgage or any of them, shall mean and be a reference to such Loan Document, the Credit Agreement, the Notes, the Mortgage or any of them, as amended or otherwise modified by this Amendment; (b) the execution, delivery and effectiveness of this Amendment shall not, except as expressly provided herein, operate as a waiver of any default of the Borrower or any right, power or remedy of the Administrative Agent or the Banks under any of the Loan Documents, nor constitute a waiver of any provision of any of the Loan Documents and except as otherwise modified by the terms hereof, the Credit Agreement and such other Loan Documents shall remain in full force and effect; (c) this Amendment may be executed in any number of counterparts and by different parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement; and (d) delivery of an executed counterpart of a signature page to this Amendment by telecopier shall be effective as delivery of a manually executed counterpart of this Amendment.

Section 7. Final Agreement. THE CREDIT AGREEMENT AND THE OTHER LOAN DOCUMENTS, INCLUDING THIS AMENDMENT, REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO ORAL AGREEMENTS BETWEEN THE PARTIES.

IN WITNESS WHEREOF, each of the parties hereto has caused this Fourth Amendment to Third Amended and Restated Credit Agreement to be executed by its officer(s) thereunto duly authorized as of the date first above written.

BORROWER:
COMSTOCK RESOURCES, INC., a Nevada corporation
By:	/s/ ROLAND O. BURNS
Name:	Roland O. Burns
Title:	Senior Vice President
	and Chief Financial Officer

ADMINISTRATIVE AGENT AND LENDERS:
BANK OF MONTREAL, as Administrative Agent and Issuing Bank and Lender
By:	/s/ JAMES V. DUCOTE
Name:	James V. Ducote
Title:	Director

BANK OF AMERICA, N.A., as Syndication Agent and Lender
By:	/s/ MICHAEL J. CLAYBORNE
Name:	Michael J. Clayborne
Title:	Vice President

JPMORGAN CHASE BANK, N.A., as Co- Documentation Agent and Lender
By:	/s/ JO LINDA PAPADAKIS
Name:	Jo Linda Papadakis
Title:	Authorized Officer

COMERICA BANK, as Co-Documentation Agent and Lender
By:	/s/ V. MARK FUQUA
Name:	V. Mark Fuqua
Title:	Senior Vice President

UNION BANK, N.A., as Co-Documentation Agent and Lender
By:	/s/ BRIAN HAWK
Name:	Brian Hawk
Title:	Investment Banking Officer

REGIONS BANK, as a Lender
By:	/s/ TRESS M. JOHNSON
Name:	Tress M. Johnson
Title:	Vice President

THE BANK OF NOVA SCOTIA, as a Lender
By:	/s/ TERRY DONOVAN
Name:	Terry Donovan
Title:	Managing Director

COMPASS BANK, as a Lender
By:	/s/ UMAR HASSAN
Name:	Umar Hassan
Title:	Vice President

NATIXIS, as a Lender
By:	/s/ LOUIS P. LAVILE, III
Name:	Louis P. Laville, III
Title:	Managing Director

By:	/s/ TIMOTHY L. POLVADO
Name:	Timothy L. Polvado
Title:	Sr. Managing Director

U.S. BANK NATIONAL ASSOCIATION, as a Lender
By:	/s/ HEATHER HAN
Name:	Heather Han
Title:	Senior Vice President

SUNTRUST BANK, as a Lender
By:	/s/ YANN PIRIO
Name:	Yann Pirio
Title:	Director

BOKF, NA, dba Bank of Texas, as a Lender
By:	/s/ MYNAN C. FELDMAN
Name:	Mynan C. Feldman
Title:	Senior Vice President

IBERIABANK, as a Lender
By:	/s/ MONI COLLINS
Name:	Moni Collins
Title:	Vice President

BRANCH BANKING AND TRUST COMPANY, as a Lender
By:	/s/ RYAN K. MICHAEL
Name:	Ryan K. Michael
Title:	Senior Vice President

ONEWEST BANK, FSB, as a Lender
By:	/s/ GRANT AHEARN
Name:	Grant Ahearn
Title:	Executive Vice President

WHITNEY BANK, as a Lender
By:	/s/ WILLIAM JOCHETZ
Name:	William Jochetz
Title:	Vice President

FIFTH THIRD BANK, as a Lender
By:	/s/ BYRON L. COOLEY
Name:	Byron L. Cooley
Title:	Executive Director

ACKNOWLEDGMENT BY GUARANTORS

Each of the undersigned Guarantors hereby (i) consents to the terms and conditions of that certain Fourth Amendment to Third Amended and Restated Credit Agreement dated as of February 8, 2013 (the “Amendment”), (ii) acknowledges and agrees that its consent is not required for the effectiveness of the Amendment, (iii) ratifies and acknowledges its respective Obligations under each Loan Document to which it is a party and affirms that the terms of its respective Guaranty guarantees, and will continue to guarantee, the Obligations, after giving effect to the Amendment, and (iv) represents and warrants that (a) no Default or Event of Default has occurred and is continuing, (b) it is in full compliance with all covenants and agreements pertaining to it in the Loan Documents, and (c) it has reviewed a copy of the Amendment.

COMSTOCK OIL & GAS HOLDINGS, INC. COMSTOCK OIL & GAS—LOUISIANA, LLC COMSTOCK OIL & GAS GP, LLC,
	By Comstock Resources, Inc., its sole member
COMSTOCK OIL & GAS, LP,
	By Comstock Oil & Gas GP, LLC, its general partner,
	By Comstock Resources, Inc., its sole member
By:	/s/ ROLAND O. BURNS
Name:   Roland O. Burns
Title:     Chief Financial Officer
COMSTOCK OIL & GAS INVESTMENTS, LLC
By:	/s/ ROLAND O. BURNS
Name:   Roland O. Burns
Title:     Manager

EX-21

Exhibit 21

SUBSIDIARIES OF COMSTOCK RESOURCES, INC.

Name	Incorporation	Business Name
Comstock Oil & Gas GP, LLC	Nevada	Comstock Oil & Gas GP, LLC
Comstock Oil & Gas Investments, LLC	Nevada	Comstock Oil & Gas Investments, LLC
Comstock Air Management, LLC(1)	Nevada	Comstock Air Management, LLC
Comstock Oil & Gas, LP(2)	Nevada	Comstock Oil & Gas, LP
Comstock Oil & Gas Holdings, Inc.(3)	Nevada	Comstock Oil & Gas Holdings, Inc.
Comstock Oil & Gas – Louisiana, LLC(4)	Nevada	Comstock Oil & Gas – Louisiana, LLC

(1) Comstock Resources, Inc. owns an 80% interest in Comstock Air Management, LLC

(2) Comstock Oil & Gas GP, LLC is the general partner and Comstock Oil & Gas Investments, LLC is the limited partner of this partnership

(3) 100% owned by Comstock Oil & Gas, LP

(4) 100% owned by Comstock Oil & Gas Holdings, Inc.

EX-23.1

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statements (Form S-8 Nos. 333-36854, 033-88962 and 333-159332 and Form S-3 No. 333-184848) of Comstock Resources, Inc. and the related Prospectuses of our reports dated February 28, 2013 with respect to the consolidated financial statements of Comstock Resources, Inc. and the effectiveness of internal control over financial reporting of Comstock Resources, Inc. included in this Annual Report (Form 10-K) for the year ended December 31, 2012.

/s/ ERNST & YOUNG LLP

Dallas, Texas

February 28, 2013

EX-23.2

Exhibit 23.2

CONSENT OF INDEPENDENT PETROLEUM ENGINEERS

We consent to the incorporation by reference in the Registration Statements (Form S-8 Nos. 333-36854, 033-88962 and 333-159332 and Form S-3 No. 333-184848) of Comstock Resources, Inc. and the related Prospectuses of the reference of our firm and to the reserve estimates as of December 31, 2012 and our report thereon in the Annual Report on Form 10-K for the year ended December 31, 2012 of Comstock Resources, Inc., filed with the Securities and Exchange Commission.

/s/ LEE KEELING AND ASSOCIATES, INC.

Tulsa, Oklahoma

February 28, 2013

EX-31.1

Exhibit 31.1

Section 302 Certification

I, M. Jay Allison, certify that:

1. I have reviewed this December 31, 2012 Form 10-K of Comstock Resources, Inc;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 28, 2013

/s/ M. JAY ALLISON

President and Chief Executive Officer

EX-31.2

Exhibit 31.2

Section 302 Certification

I, Roland O. Burns, certify that:

1. I have reviewed this December 31, 2012 Form 10-K of Comstock Resources, Inc;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f))for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 28, 2013

/s/ ROLAND O. BURNS

Sr. Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Comstock Resources, Inc. (the “Company”) on Form 10-K for the year ending December 31, 2012 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, M. Jay Allison, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

/s/ M. JAY ALLISON

M. Jay Allison

Chief Executive Officer

February 28, 2013

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Comstock Resources, Inc. (the “Company”) on Form 10-K for the year ending December 31, 2012 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Roland O. Burns, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

/s/ ROLAND O. BURNS

Roland O. Burns

Chief Financial Officer

February 28, 2013

EX-99.1

Exhibit 99.1

LEE KEELING AND ASSOCIATES, INC.

PETROLEUM CONSULTANTS

First Place Tower

15 East Fifth Street • Suite 3500

Tulsa, Oklahoma 74103-4350

(918) 587-5521 • Fax: (918) 587-2881

January 21, 2013

Comstock Resources, Inc.

5300 Town and Country Boulevard, Ste. 500

Frisco, Texas 75034

Attention:	Mr. M. Jay Allison
	President and C.E.O.

RE:	Estimated Reserves and
	Future Net Revenue
	Comstock Resources, Inc.
	Constant Prices and Expenses

Gentlemen:

In accordance with your request, we have prepared an estimate of net reserves and future net revenue to be realized from the interests owned by Comstock Resources, Inc. (Comstock) for 2012 year-end reporting. These interests are in oil and gas properties located in the states of Arkansas, Kansas, Louisiana, New Mexico, Oklahoma, Texas, and Wyoming. Reserves estimated by us reflect all of Comstock’s corporate reserves. The effective date of this estimate is December 31, 2012. It was completed January 10, 2013, and the results are summarized as follows:

	ESTIMATED REMAINING				NET GAS*		FUTURE NET REVENUE
	NET RESERVES				EQUIVALENT		Total ($)		Present Worth Disc.@10% ($)
RESERVE CLASSIFICATION	Oil (Barrels)		Gas (MCF)		(MCFE)
Proved Developed
Producing		10,208,224		321,689,844		382,939,156		1,030,266,312		684,544,312
Non-Producing		805,080		1,635,082		6,465,564		59,834,832		37,876,895
Behind-Pipe		1,294,676		45,449,770		53,217,816		155,925,703		75,199,242
Sub-Total		12,307,980		368,774,696		442,622,536		1,246,026,847		797,620,449
Proved Undeveloped		26,911,498		107,825,578		269,294,594		1,067,190,375		228,909,422
Total All Reserves		39,219,478		476,600,274		711,917,130		2,313,217,222		1,026,529,871

* Net Gas Equivalent is calculated based on a conversion factor of 6 MCF of gas per barrel of oil. Note: Totals may not agree with schedules due to computer roundoff.

Future net revenue is the amount, exclusive of state and federal income taxes, which will accrue to Comstock’s interest from continued operation of the properties to depletion. It should not be construed as a fair market or trading value.

No attempt has been made to quantify or otherwise account for any accumulative gas production imbalances that may exist. Neither has an attempt been made to determine whether the wells and facilities are in compliance with various governmental regulations, nor have costs been included in the event they are not.

This report consists of various summaries. Schedule No. 1 presents summary forecasts of annual gross and net production, severance and ad valorem taxes, operating income, and net revenue by reserve type. Schedule No. 2 is a sequential listing of the individual properties based on discounted future net revenue. Schedule No. 3 is a sequential listing of the individual properties based on discounted future net revenue by reserve category. An alphabetical one-line summary by property is presented on Schedule No. 4. A one-line listing of the individual properties, ordered by reserve category, state and project, is presented on Schedule No. 5. A geographical one-line summary by state, project and lease is shown on Schedule No. 6.

CLASSIFICATION OF RESERVES

Reserves assigned to the various leases and/or wells have been classified as either “proved developed” or “proved undeveloped” in accordance with the definitions of the proved reserves as promulgated by the Securities and Exchange Commission (SEC). These are as follows:

Proved Developed Oil and Gas Reserves are reserves that can be expected to be recovered through existing wells with existing equipment and operating methods. Additional oil and gas expected to be obtained through the application of fluid injection or other improved recovery techniques for supplementing the natural forces and mechanisms of primary recovery should be included as “proved developed reserves” only after testing by a pilot project or after the operation of an installed program has confirmed through production response that increased recovery will be achieved.

Proved Undeveloped Oil and Gas Reserves are reserves that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for recompletion. Reserves on undrilled acreage shall be limited to those drilling units offsetting productive units that are reasonably certain of production when drilled. Proved reserves for other undrilled units can be claimed only where it can be demonstrated with certainty that there is continuity of production from the existing productive formation. Under no circumstances should estimates for proved undeveloped reserves be attributable to any acreage for which an application of fluid injection or other improved recovery technique is contemplated, unless such techniques have been proved effective by actual tests in the area and in the same reservoir.

Proved Developed Oil and Gas Reserves attributed to the subject leases have been further classified as “proved developed producing,” “proved developed non-producing” and “proved developed behind-pipe.”

Proved Developed Producing Reserves are those reserves expected to be recovered from currently producing zones under continuation of present operating methods.

Proved Developed Non-Producing Reserves are those reserves expected to be recovered from zones that have been completed and tested but are not yet producing due to situations including, but not limited to, lack of market, minor completion problems that are expected to be corrected, or reserves expected from future stimulation treatments based on analogy to nearby wells.

Proved Developed Behind-Pipe Reserves are those reserves currently behind the pipe in existing wells that are considered proved by virtue of successful testing or production in offsetting wells.

ESTIMATION OF RESERVES

The majority of the subject wells have been producing for a considerable length of time. Reserves attributable to wells with a well-defined production and/or pressure decline trend were based upon extrapolation of that trend to an economic limit and/or abandonment pressure.

Reserves anticipated from new wells were based upon volumetric calculations or analogy with similar properties, which are producing from the same horizons in the respective areas. Structural position, net pay thickness, well productivity, gas/oil ratios, water production, pressures, and other pertinent factors were considered in the estimation of these reserves.

Reserves assigned to behind-pipe zones and undeveloped locations have been estimated based on volumetric calculations and/or analogy with other wells in the area producing from the same horizon.

FUTURE NET REVENUE

Oil Income and Prices

Income from the sale of oil was estimated based on the unweighted average price for NYMEX West Texas Intermediate for the first day of each month for January through December of 2012, as provided by the staff of Comstock. The computed reference price of $94.69 per barrel was held constant throughout the life of each lease. The reference price was adjusted for historical differentials between posted prices and actual field prices to reflect quality, transportation fees and regional price differences. Provisions were made for state severance and ad valorem taxes where applicable.

Gas Income and Prices

Income from the sale of gas was estimated based on the average price for natural gas sold at Henry Hub the first day of each month for January through December of 2012, as provided by staff of Comstock. The computed reference price of $2.757 per MCF was held constant throughout the life of each lease. The reference price was adjusted for basis differentials, marketing, and transportation costs. Provisions were made for state severance and ad valorem taxes where applicable.

Operating Expenses

Operating expenses were based upon actual operating costs charged by the respective operators as supplied by the staff of Comstock or were based upon the actual experience of the operators in the respective areas. For leases operated by Comstock, monthly operating costs included lease operating expenses and overhead charges. All expenses have been held constant throughout the life of each lease.

Future Expenses and Abandonment Costs

As provided by Comstock, provisions have been made for future expenses required for drilling, recompletion and/or abandonment costs. These costs have been held constant from current estimates.

QUALIFICATIONS OF LEE KEELING AND ASSOCIATES, INC.

Lee Keeling and Associates, Inc. has been offering consulting engineering and geological services to integrated oil companies, independent operators, investors, financial institutions, legal firms, accounting firms and governmental agencies since 1957. Its professional staff is experienced in all productive areas of the United States, Canada, Latin America and many other foreign countries. The firm’s reports are recognized by major financial institutions and used as the basis for oil company mergers, purchases, sales, financing of projects and for registration purposes with financial and regulatory authorities throughout the world.

GENERAL

Information upon which this estimate of net reserves and future net revenue has been based was furnished by the staff of Comstock or was obtained by us from outside sources we consider to be reliable. This information is assumed to be correct. No attempt has been made to verify title or ownership of the subject properties. Interests attributed to wells to be drilled at undeveloped locations are based on current ownership. Leases were not inspected by a representative of this firm, nor were the wells tested under our supervision; however, the performance of the majority of the wells was discussed with employees of Comstock.

This report has been prepared utilizing all methods and procedures regularly used by petroleum engineers to estimate oil and gas reserves for properties of this type and character, and we have used all methods and procedures necessary to prepare this report. The recovery of oil and gas reserves and projection of producing rates are dependent upon many variable factors including prudent operation, compression of gas when needed, market demand, installation of lifting equipment, and remedial work when required. The reserves included in this report have been based upon the assumption that the wells will be operated in a prudent manner under the same conditions existing on the effective date. Actual production results and future well data may yield additional facts, not presently available to us, which may require an adjustment to our estimates. The assumptions, data, methods and procedures used in connection with the preparation of this report are appropriate for the purpose served by this report.

The reserves included in this report are estimates only and should not be construed as being exact quantities. They may or may not be actually recovered and if recovered, the revenues therefrom arid the actual costs related thereto could be more or less than the estimated amounts. As in all aspects of oil and gas estimation, there are uncertainties inherent in the interpretation of engineering data and, therefore, our conclusions necessarily represent only informed professional judgments.

The projection of cash flow has been made assuming constant prices. There is no assurance that prices will not vary. For this reason and those listed in the previous paragraph, the future net cash from the sale of production from the subject properties may vary from the estimates contained in this report.

It should be pointed out that regulatory authorities could, in the future, change the allocation of reserves allowed to be produced from a particular well in any reservoir, thereby altering the material premise upon which our reserve estimates may be based.

The information developed during the course of this investigation, basic data, maps and worksheets showing recovery determinations are available for inspection in our office.

We appreciate this opportunity to be of service to you.

Very truly yours,

/s/ LEE KEELING AND ASSOCIATES, INC.

LEE KEELING AND ASSOCIATES, INC.

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Summary of Significant Accounting Policies - Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended					12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Earnings Per Share [Line Items]
Net loss	$ (78,151)	$ (41,134)	$ 1,309	$ 3,949	$ 2,404	$ (100,060)	$ (33,472)	$ (19,586)
Income Allocable to Unvested Stock Grants
Basic Net Loss Attributable to Common Stock						(100,060)	(33,472)	(19,586)
Effect of Dilutive Securities: Stock Options
Effect of Dilutive Securities: Performance Stock Units
Diluted Net Loss Attributable to Common Stock						$ (100,060)	$ (33,472)	$ (19,586)
Basic Net Loss Attributable to Common Stock, Shares						46,422	45,997	45,561
Effect of Dilutive Securities: Stock Options, Shares
Effect of Dilutive Securities: Performance Stock Units, Shares
Diluted Net Loss Attributable to Common Stock, Shares						46,422	45,997	45,561
Basic Net Loss Attributable to Common Stock, Per Share	$ (1.68)	$ (0.89)	$ 0.03	$ 0.08	$ 0.05	$ (2.16)	$ (0.73)	$ (0.43)
Diluted Net Loss Attributable to Common Stock, Per Share	$ (1.68)	$ (0.89)	$ 0.03	$ 0.08	$ 0.05	$ (2.16)	$ (0.73)	$ (0.43)

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Long-term Debt - Additional Information (Detail) (USD $)	12 Months Ended						12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Bank credit facility [Member]	Dec. 31, 2012 9 1/2% senior notes due 2020 [Member]	Jun. 05, 2012 9 1/2% senior notes due 2020 [Member]	Dec. 31, 2012 8 3/8% senior notes due 2017 [Member]	Dec. 31, 2011 6 7/8% senior notes due 2012 [Member]	Dec. 31, 2010 6 7/8% senior notes due 2012 [Member]	Dec. 31, 2012 7 3/4% senior notes due 2019 [Member]	Mar. 14, 2011 7 3/4% senior notes due 2019 [Member]
Debt Instrument [Line Items]
Bank credit facility				$ 850,000,000
Line of credit facility commitment term (in years)				5 years
Maturity of credit facility				Nov. 30, 2015
Borrowing base				570,000,000
Availability of borrowing base				130,000,000
Minimum spread rate over LIBOR for interest rate on credit facility				1.75%
Maximum spread rate over LIBOR for interest rate on credit facility				2.75%
Stated percentage over federal funds rate to calculate base rate				0.50%
Stated percentage over 30 day LIBOR to calculate base rate				1.00%
Minimum spread rate over base rate for interest rate on credit facility				0.75%
Maximum spread rate over base rate for interest rate on credit facility				1.75%
Maximum amount of cash dividends without restriction under credit facility				50,000,000
Commitment fee on unused borrowing base				0.50%
Outstanding senior notes					300,000,000		300,000,000		172,000,000	300,000,000
Interest rate on senior notes					9.50%		8.375%		6.875%	7.75%
Maturity of senior notes					Jun. 15, 2020		Oct. 15, 2017			Apr. 01, 2019
Face amount of senior note						300,000,000					300,000,000
Ownership percentage of guarantor subsidiary				100.00%
Repurchase of senior notes due 2012	390,000,000	287,000,000	68,000,000					172,400,000
Loss resulted due to early extinguishment of senior notes								$ 1,100,000

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Acquisitions and Dispositions of Oil and Gas Properties - Amounts Recognized for Fair Value of Assets Acquired and Liabilities Assumed (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Business Acquisition [Line Items]
Proved properties	$ 205,758
Unproved properties	143,751
Asset retirement obligation	(741)
Liabilities assumed	(10,872)
Net fair value of properties acquired and liabilities assumed	$ 337,896

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Derivative Financial Instruments and Hedging Activities - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments And Hedging Activities [Line Items]
Realized gains on crude oil price swaps	$ 9,800,000
Derivative asset at fair value	11,651,000
Derivative asset at carrying value	11,651,000
Derivative asset current at carrying value	11,651,000	459,000
Contract terms 2012 oil production [Member]
Derivative Instruments And Hedging Activities [Line Items]
Quantity of crude oil for which swap entered	1,710,000
NYMEX price of crude oil swaps	$ 99.46

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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Commitments And Contingencies [Line Items]
Rent expense under noncancelable operating leases	$ 1.4	$ 1.1	$ 1.3
Commitments for contracted drilling rigs	65.3
Contract term related to drilling rigs	Through November 2015
Natural gas transportation agreements	Through July 2019
Maximum commitments under natural gas transportation agreements	$ 25.3

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Supplementary Quarterly Financial Data (Unaudited) - Consolidated Statement of Stockholders' Equity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended					12 Months Ended															3 Months Ended			6 Months Ended	9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Common Stock [Member]	Dec. 31, 2011 Common Stock [Member]	Dec. 31, 2010 Common Stock [Member]	Dec. 31, 2012 Additional Paid-in Capital [Member]	Dec. 31, 2011 Additional Paid-in Capital [Member]	Dec. 31, 2010 Additional Paid-in Capital [Member]	Dec. 31, 2012 Retained Earnings [Member]	Dec. 31, 2011 Retained Earnings [Member]	Dec. 31, 2010 Retained Earnings [Member]	Dec. 31, 2012 Accumulated Other Comprehensive Income [Member]	Dec. 31, 2011 Accumulated Other Comprehensive Income [Member]	Dec. 31, 2010 Accumulated Other Comprehensive Income [Member]	Sep. 30, 2012 As Restated [Member]	Jun. 30, 2012 As Restated [Member]	Mar. 31, 2012 As Restated [Member]	Jun. 30, 2012 As Restated [Member]	Sep. 30, 2012 As Restated [Member]	Sep. 30, 2012 As Restated [Member] Common Stock [Member]	Sep. 30, 2012 As Restated [Member] Additional Paid-in Capital [Member]	Sep. 30, 2012 As Restated [Member] Retained Earnings [Member]	Sep. 30, 2012 As Restated [Member] Accumulated Other Comprehensive Income [Member]
Beginning Balance					$ 1,068,531	$ 1,037,625	$ 1,068,531	$ 1,066,111	$ 24,063	$ 23,853	$ 23,552	$ 468,709	$ 454,499	$ 434,505	$ 524,377	$ 557,849	$ 577,435	$ 20,476	$ 32,330	$ 30,619	$ 1,037,177	$ 1,028,220	$ 1,037,625	$ 1,037,625	$ 1,037,625	$ 24,063	$ 468,709	$ 524,377	$ 20,476
Beginning Balance, Shares									48,125	47,706	47,104															48,125
Stock-based compensation						13,728	15,032	17,377	141	210	209	13,587	14,822	17,168											10,189	18	10,171
Stock-based compensation, Shares									284	419	418															37
Excess income taxes from stock-based compensation						(1,701)	(612)	1,491				(1,701)	(612)	1,491											(1,681)		(1,681)
Net loss - as restated	(78,151)	(41,134)	1,309	3,949	2,404	(100,060)	(33,472)	(19,586)							(100,060)	(33,472)	(19,586)				(30,449)	7,165	1,375	8,540	(21,909)			(21,909)
Other comprehensive loss - as restated						(16,058)	(11,854)	1,711										(16,058)	(11,854)	1,711	(86)	(1,268)	(12,910)		(14,264)				(14,264)
Ending Balance	$ 933,534	$ 1,037,625				$ 933,534	$ 1,037,625	$ 1,068,531	$ 24,204	$ 24,063	$ 23,853	$ 480,595	$ 468,709	$ 454,499	$ 424,317	$ 524,377	$ 557,849	$ 4,418	$ 20,476	$ 32,330	$ 1,009,960	$ 1,037,177	$ 1,028,220	$ 1,037,177	$ 1,009,960	$ 24,081	$ 477,199	$ 502,468	$ 6,212
Ending Balance, shares									48,409	48,125	47,706															48,162

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Acquisitions and Dispositions of Oil and Gas Properties - Additional Information (Detail) (USD $)	12 Months Ended		12 Months Ended
	Dec. 31, 2012 acre Well	Jul. 30, 2012	Dec. 31, 2011 North Louisiana [Member] acre Mcfe	Dec. 31, 2012 Delaware Basin [Member] acre Boe
Business Acquisition [Line Items]
Total cash consideration paid	$ 337,896,000			$ 337,900,000
Acquisition of proved oil and gas reserves			13,000,000	25,200,000
Acquisition of leases covering area, net			3,500	43,591
Exchange transaction completion date	May 2012
Acquisition of oil and gas properties	337,896,000		27,100,000
Net proceeds from sale of oil and gas properties	119,800,000			24,800,000
Gain on sale of oil and gas properties	26,000,000
Total net acres in joint venture area	28,160
JV Partner Participation Cost Per Acre	25,000
Joint Venture expected acres per well drilled	80
Joint Venture wells with JV Partner acreage participation conditional commitment	100
JV partner total working interest per well	33.00%
JV partner acreage participation working interest per well	33.00%
JV partner drilling cost working interest	33.00%
Payments received from KKR for initial participation in wells spud		23,800,000
Formation costs incurred	1,700,000
Payment received from joint venture partner for acreage and facility reimbursements	$ 8,700,000

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Summary of Significant Accounting Policies - Other Current Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Other Current Assets [Line Items]
Other Current Assets	$ 6,954	$ 2,796
Pipe and oil field equipment inventory [Member]
Schedule Of Other Current Assets [Line Items]
Other Current Assets	1,922	2,314
Production tax refunds receivable [Member]
Schedule Of Other Current Assets [Line Items]
Other Current Assets	1,830
Derivative settlements receivable [Member]
Schedule Of Other Current Assets [Line Items]
Other Current Assets	1,693
Drilling advances [Member]
Schedule Of Other Current Assets [Line Items]
Other Current Assets	1,160
Prepaid expenses [Member]
Schedule Of Other Current Assets [Line Items]
Other Current Assets	300	397
Other [Member]
Schedule Of Other Current Assets [Line Items]
Other Current Assets	$ 49	$ 85

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Supplementary Quarterly Financial Data (Unaudited) - Consolidated Statements of Cash Flows (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended			3 Months Ended	6 Months Ended	9 Months Ended	3 Months Ended	6 Months Ended	9 Months Ended	3 Months Ended	6 Months Ended	9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Mar. 31, 2012 As Reported [Member]	Jun. 30, 2012 As Reported [Member]	Sep. 30, 2012 As Reported [Member]	Mar. 31, 2012 Adjustments [Member]	Jun. 30, 2012 Adjustments [Member]	Sep. 30, 2012 Adjustments [Member]	Mar. 31, 2012 As Restated [Member]	Jun. 30, 2012 As Restated [Member]	Sep. 30, 2012 As Restated [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income ( loss)	$ (100,060)	$ (33,472)	$ (19,586)	$ 6,859	$ (3,445)	$ (29,433)	$ (5,484)	$ 11,985	$ 7,524	$ 1,375	$ 8,540	$ (21,909)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Gain on sale of assets	(50,892)	(35,061)	10,103	(33,348)	(53,686)	(50,892)				(33,348)	(53,686)	(50,892)
Deferred income taxes	(47,192)	(14,652)	(4,617)	8,072	416	(11,151)	(4,441)	11,390	3,798	3,631	11,806	(7,353)
Dry hole costs and leasehold impairments	61,300	9,819		1,315	1,315	2,685				1,315	1,315	2,685
Impairment of oil and gas properties	25,368	60,817	224	49	5,350	5,350	0			49	5,350	5,350
Depreciation, depletion and amortization	365,286	290,776	213,809	79,097	169,180	268,410				79,097	169,180	268,410
Unrealized gains from derivatives				262			9,925	(24,610)	(13,498)	10,187	(24,610)	(13,498)
Debt issuance cost and discount amortization	5,277	4,300	2,436	944	2,103	3,689				944	2,103	3,689
Stock-based compensation	13,728	15,032	17,377	3,535	6,860	10,189				3,535	6,860	10,189
Excess income taxes from stock-based compensation	1,701	612	(1,491)	1,405	1,670	1,681				1,405	1,670	1,681
Decrease in accounts receivable	11,975	(9,046)	(4,432)	1,815	11,611	1,826		1,235	2,176	1,815	12,846	4,002
Increase in other current assets	(4,309)	3,311	48,070	(199)	(4,097)	(5,059)				(199)	(4,097)	(5,059)
Increase in accounts payable and accrued expenses	(8,463)	(7,532)	49,769	63,374	4,621	28,403				63,374	4,621	28,403
Net cash provided by operating activities	262,229	284,904	311,662	133,180	141,898	225,698				133,180	141,898	225,698
CASH FLOWS FROM INVESTING ACTIVITIES:
Net cash used for investing activities	(383,720)	(952,086)	(440,473)	(146,423)	(164,560)	(264,119)				(146,423)	(164,560)	(264,119)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net cash provided by financing activities	117,502	673,910	40,071	8,533	17,707	32,530				8,533	17,707	32,530
Net decrease in cash and cash equivalents	(3,989)	6,728	(88,740)	(4,710)	(4,955)	(5,891)				(4,710)	(4,955)	(5,891)
Cash and cash equivalents, beginning of the year	8,460	1,732	90,472	8,460	8,460	8,460				8,460	8,460	8,460
Cash and cash equivalents, end of the year	$ 4,471	$ 8,460	$ 1,732	$ 3,750	$ 3,505	$ 2,569				$ 3,750	$ 3,505	$ 2,569

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Supplementary Quarterly Financial Data (Unaudited) - Summary of Results of Operations from Non-Routine Items (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule Of Quarterly Financial Data [Line Items]
Gain on sale of oil and gas properties		$ (2,794)	$ 20,338	$ 6,727					$ 24,271
Gain on sales of marketable securities				26,621	2,905	2,484	8,480	21,249	26,621	35,118	16,529
Impairments of unproved oil and gas properties	(58,615)	(1,370)		(1,315)		(364)		(9,454)	(61,300)	(9,800)
Impairments of proved oil and gas properties	$ (20,018)		$ (5,301)	$ (49)	$ (60,817)				$ (25,368)	$ (60,817)

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Stockholders' Equity - Additional Information (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Stockholders Equity [Line Items]
Common stock, shares authorized	75,000,000	75,000,000
Common stock, par value	$ 0.50	$ 0.50
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, par value per share	$ 10.00	$ 10.00
Preferred stock, shares outstanding	0	0

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Supplementary Quarterly Financial Data (Unaudited) - Consolidated Statements of Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended					12 Months Ended			3 Months Ended			6 Months Ended	9 Months Ended	3 Months Ended			6 Months Ended	9 Months Ended	3 Months Ended			6 Months Ended	9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012 As Reported [Member]	Jun. 30, 2012 As Reported [Member]	Mar. 31, 2012 As Reported [Member]	Jun. 30, 2012 As Reported [Member]	Sep. 30, 2012 As Reported [Member]	Sep. 30, 2012 Adjustments [Member]	Jun. 30, 2012 Adjustments [Member]	Mar. 31, 2012 Adjustments [Member]	Jun. 30, 2012 Adjustments [Member]	Sep. 30, 2012 Adjustments [Member]	Sep. 30, 2012 As Restated [Member]	Jun. 30, 2012 As Restated [Member]	Mar. 31, 2012 As Restated [Member]	Jun. 30, 2012 As Restated [Member]	Sep. 30, 2012 As Restated [Member]
Net loss	$ (78,151)	$ (41,134)	$ 1,309	$ 3,949	$ 2,404	$ (100,060)	$ (33,472)	$ (19,586)	$ (25,988)	$ (10,304)	$ 6,859	$ (3,445)	$ (29,433)	$ (4,461)	$ 17,469	$ (5,484)	$ 11,985	$ 7,524	$ (30,449)	$ 7,165	$ 1,375	$ 8,540	$ (21,909)
Reclassified to earnings, net of provision for (benefit from) income taxes of $-, $161, $161, $-, $-, $-, $-, $-, $- and $-, $161, $161																(298)		(298)			(298)		(298)
Unrealized hedging gains, net of provision for (benefit from) income taxes of $3,578, ($3,578), $-, ($12,087), $12,087, $-, $3,889, ($3,889), $- and ($4,620), $4,620, $-						(298)	298		(7,223)	22,448	(6,645)		8,580	7,223	(22,448)	6,645		(8,580)
Net change in unrealized gains and losses on marketable securities, net of benefit from (provision for) income taxes of $6,793, $-, $6,793, $682, $-, $682, $46, $-, $46 and $7,520, $-, $7,520						(15,760)	(12,152)	1,711	(86)	(1,268)	(12,612)		(13,966)						(86)	(1,268)	(12,612)		(13,966)
Other comprehensive income (loss)						(16,058)	(11,854)	1,711	(7,309)	21,180	(19,257)		(5,386)	7,223	(22,448)	6,347		(8,878)	(86)	(1,268)	(12,910)		(14,264)
Comprehensive income (loss)						$ (116,118)	$ (45,326)	$ (17,875)	$ (33,297)	$ 10,876	$ (12,398)		$ (34,819)	$ 2,762	$ (4,979)	$ 863		$ (1,354)	$ (30,535)	$ 5,897	$ (11,535)		$ (36,173)

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Oil and Gas Reserves Information (Unaudited) - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Annual Change in Total Proved Undeveloped Natural Gas Reserves	(460,000)
Crude Oil and NGL Per Barrel [Member]
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Average sales prices	94.61	92.93
Natural Gas Per Thousand Cubic Feet [Member]
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Average sales prices	2.84	4.18

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Supplementary Quarterly Financial Data (Unaudited) - Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended			3 Months Ended			9 Months Ended	3 Months Ended			9 Months Ended	3 Months Ended			9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012 As Reported [Member]	Jun. 30, 2012 As Reported [Member]	Mar. 31, 2012 As Reported [Member]	Sep. 30, 2012 As Reported [Member]	Sep. 30, 2012 Adjustments [Member]	Jun. 30, 2012 Adjustments [Member]	Mar. 31, 2012 Adjustments [Member]	Sep. 30, 2012 Adjustments [Member]	Sep. 30, 2012 As Restated [Member]	Jun. 30, 2012 As Restated [Member]	Mar. 31, 2012 As Restated [Member]	Sep. 30, 2012 As Restated [Member]
Reclassified to earnings, provision for (benefit from)income taxes										$ 161	$ 161			$ 161	$ 161
Unrealized hedging gains, income tax provision (benefit)	(161)	161		3,889	(12,087)	3,578	(4,620)	(3,889)	12,087	(3,578)	4,620
Net change in unrealized gains and losses on marketable securities, income tax benefit (provision)	$ 8,487	$ 6,543	$ (923)	$ 46	$ 682	$ 6,793	$ 7,520					$ 46	$ 682	$ 6,793	$ 7,520

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Derivative Financial Instruments and Hedging Activities - Summary of Outstanding Commodity Derivatives (Detail) (Oil Price Swap Agreements One [Member])	Dec. 31, 2012 bbl
Oil Price Swap Agreements One [Member]
Derivatives [Line Items]
Commodity Derivatives Volume	2,160,000
Commodity Derivatives Beginning of Contract Period	Jan. 2013
Commodity Derivatives End of Contract Period	Dec. 2013
Commodity Derivatives Weighted Average Contract Price	98.67

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Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2012

Long-term Debt

Long-term debt is comprised of the following:

	As of December 31,
	2011			2012
	(In thousands)
Bank credit facility	$	600,000		$	440,000
8 3/8% senior notes due 2017		300,000			300,000
Discount related to 8 3/8% senior notes due 2017		(3,092	)		(2,556	)
7 3/4% senior notes due 2019		300,000			300,000
9 1/2% senior notes due 2020		—			300,000
Discount related to 9 1/2% senior notes due 2020		—			(13,061	)
	$	1,196,908		$	1,324,383

Debt by Year of Maturity

The following table summarizes Comstock’s debt as of December 31, 2012 by year of maturity:

	2013		2014		2015		2016		2017		Thereafter		Total
	(In thousands)
Bank credit facility	$	—	$	—	$	440,000	$	—	$	—	$	—	$	440,000
8 3/8% senior notes		—		—		—		—		297,444		—		297,444
7 3/4% senior notes		—		—		—		—		—		300,000		300,000
9 1/2% senior notes		—		—		—		—		—		286,939		286,939
	$	—	$	—	$	440,000	$	—	$	297,444	$	586,939	$	1,324,383

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Oil and Gas Producing Activities - Costs Incurred Related to Oil and Gas Property Acquisition Exploration and Development Activities (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property Acquisitions:
Unproved property acquisitions	$ 29,677	$ 255,699	$ 134,728
Proved property acquisitions	3,235	219,402
Development costs	514,629	496,506	315,041
Exploration costs	5,522	83,182	87,823
Costs Incurred, Acquisition of Oil and Gas Properties, Total	$ 553,063	$ 1,054,789	$ 537,592

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Summary of Significant Accounting Policies - Cash Payments Made for Interest and Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash Payments:
Interest payments	$ 79,001	$ 49,109	$ 40,467
Income tax refunds	$ (58)	$ (1,403)	$ (48,575)

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Supplementary Quarterly Financial Data (Unaudited) - Consolidated Statements of Operations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended			3 Months Ended			6 Months Ended	9 Months Ended	3 Months Ended			6 Months Ended	9 Months Ended	3 Months Ended			6 Months Ended	9 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012 As Reported [Member]	Jun. 30, 2012 As Reported [Member]	Mar. 31, 2012 As Reported [Member]	Jun. 30, 2012 As Reported [Member]	Sep. 30, 2012 As Reported [Member]	Sep. 30, 2012 Adjustments [Member]	Jun. 30, 2012 Adjustments [Member]	Mar. 31, 2012 Adjustments [Member]	Jun. 30, 2012 Adjustments [Member]	Sep. 30, 2012 Adjustments [Member]	Sep. 30, 2012 As Restated [Member]	Jun. 30, 2012 As Restated [Member]	Mar. 31, 2012 As Restated [Member]	Jun. 30, 2012 As Restated [Member]	Sep. 30, 2012 As Restated [Member]
Restated Results Of Operations [Line Items]
Oil and gas sales	$ 106,603				$ 114,456	$ 119,422	$ 112,451	$ 88,038	$ 431,923	$ 434,367	$ 349,141	$ 117,129	$ 104,690	$ 110,335		$ 332,154	$ (4,234)	$ (3,954)	$ 1,354		$ (6,834)	$ 112,895	$ 100,736	$ 111,689		$ 325,320
Gain on sale of oil and gas properties		(2,794)	20,338	6,727					24,271			(2,794)	20,338	6,727		24,271						(2,794)	20,338	6,727		24,271
Total Revenues									456,194	434,367	349,141	114,335	125,028	117,062		356,425	(4,234)	(3,954)	1,354		(6,834)	110,101	121,074	118,416		349,591
Total operating expenses									587,854	475,683	361,145	134,520	129,120	115,575		379,215						134,520	129,120	115,575		379,215
Operating income (loss)	(102,036)				(53,517)	12,086	8,378	(8,263)	(131,660)	(41,316)	(12,004)	(20,185)	(4,092)	1,487		(22,790)	(4,234)	(3,954)	1,354		(6,834)	(24,419)	(8,046)	2,841		(29,624)
Other income (expenses):
Gain on sale of marketable securities				26,621	2,905	2,484	8,480	21,249	26,621	35,118	16,529			26,621		26,621								26,621		26,621
Realized gain (loss) from derivatives																	3,293	2,719	(1,354)		4,658	3,293	2,719	(1,354)		4,658
Unrealized gain (loss) from derivatives																	(11,112)	34,797	(10,187)		13,498	(11,112)	34,797	(10,187)		13,498
Other income												153	545	(23)		675		(262)	262			153	283	239		675
Interest expense									(64,575)	(42,688)	(29,456)	(17,535)	(14,529)	(13,237)		(45,301)						(17,535)	(14,529)	(13,237)		(45,301)
Total other income (expenses)									(15,754)	(6,780)	(12,428)	(17,382)	(13,984)	13,361		(18,005)	(7,819)	37,254	(11,279)		18,156	(25,201)	23,270	2,082		151
Income (loss) before income taxes									(147,414)	(48,096)	(24,432)	(37,567)	(18,076)	14,848		(40,795)	(12,053)	33,300	(9,925)		11,322	(49,620)	15,224	4,923		(29,473)
Benefit from (provision for) income taxes									47,354	14,624	4,846	11,579	7,772	(7,989)		11,362	7,592	(15,831)	4,441		(3,798)	19,171	(8,059)	(3,548)		7,564
Net income (loss)	$ (78,151)				$ (41,134)	$ 1,309	$ 3,949	$ 2,404	$ (100,060)	$ (33,472)	$ (19,586)	$ (25,988)	$ (10,304)	$ 6,859	$ (3,445)	$ (29,433)	$ (4,461)	$ 17,469	$ (5,484)	$ 11,985	$ 7,524	$ (30,449)	$ 7,165	$ 1,375	$ 8,540	$ (21,909)
Net income (loss) per share:
Basic	$ (1.68)				$ (0.89)	$ 0.03	$ 0.08	$ 0.05	$ (2.16)	$ (0.73)	$ (0.43)	$ (0.56)	$ (0.22)	$ 0.14		$ (0.63)	$ (0.10)	$ 0.37	$ (0.11)		$ 0.16	$ (0.66)	$ 0.15	$ 0.03		$ (0.47)
Diluted	$ (1.68)				$ (0.89)	$ 0.03	$ 0.08	$ 0.05	$ (2.16)	$ (0.73)	$ (0.43)	$ (0.56)	$ (0.22)	$ 0.14		$ (0.63)	$ (0.10)	$ 0.37	$ (0.11)		$ 0.16	$ (0.66)	$ 0.15	$ 0.03		$ (0.47)
Weighted average shares outstanding:
Basic									46,422	45,997	45,561	46,443	46,426	46,372		46,414						46,443	46,426	46,372		46,414
Diluted									46,422	45,997	45,561	46,443	46,426	46,372		46,414						46,443	46,426	46,372		46,414

XML

Summary of Significant Accounting Policies - Summary of Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Accrued Expenses [Line Items]
Accrued drilling costs	$ 14,050	$ 29,291
Accrued interest payable	12,351	11,113
Advance from joint venture partner	7,286
Accrued oil and gas property acquisition costs	2,413	31,988
Other	11,272	13,110
Total accrued expenses	$ 47,372	$ 85,502

XML

Long-term Debt - Debt by Year of Maturity (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Debt Instrument [Line Items]
2013
2014
2015	440,000
2016
2017	297,444
Thereafter	586,939
Long-term debt	1,324,383
Bank credit facility [Member]
Debt Instrument [Line Items]
2013
2014
2015	440,000
2016
2017
Thereafter
Long-term debt	440,000
8 3/8% senior notes due 2017 [Member]
Debt Instrument [Line Items]
2013
2014
2015
2016
2017	297,444
Thereafter
Long-term debt	297,444
7 3/4% senior notes due 2019 [Member]
Debt Instrument [Line Items]
2013
2014
2015
2016
2017
Thereafter	300,000
Long-term debt	300,000
9 1/2% senior notes due 2020 [Member]
Debt Instrument [Line Items]
2013
2014
2015
2016
2017
Thereafter	286,939
Long-term debt	$ 286,939

XML

Income Taxes - Difference Between Customary Rate and Effective Tax Rate on Income Before Income Taxes Due (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Line Items]
Statutory rate	35.00%	35.00%	35.00%
Tax effect of:
Nondeductible compensation	(1.70%)	(5.70%)	(17.40%)
State taxes, net of federal tax benefit	(1.00%)	1.50%	1.40%
Net operating loss carryback adjustments			1.50%
Other	(0.20%)	(0.40%)	(0.70%)
Effective tax rate	32.10%	30.40%	19.80%

XML

Stock-based Compensation - Options Exercised and Tax Benefit Realized (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Options Exercised And Tax Benefit Realized [Line Items]
Cash received for options exercised			$ 1,427
Actual tax benefit realized			$ 4,221

XML

Acquisitions and Dispositions of Oil and Gas Properties - Purchase Price Allocation including Final Post-Closing Adjustments (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Consideration paid:
Cash	$ 337,896
Total consideration paid	$ 337,896

XML

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2012

Summary of Significant Accounting Policies

(1) Summary of Significant Accounting Policies

Accounting policies used by Comstock Resources, Inc. reflect oil and natural gas industry practices and conform to accounting principles generally accepted in the United States of America.

Basis of Presentation and Principles of Consolidation

Comstock Resources, Inc. is engaged in oil and natural gas exploration, development and production, and the acquisition of producing oil and natural gas properties. The Company’s operations are primarily focused in Texas and Louisiana. The consolidated financial statements include the accounts of Comstock Resources, Inc. and its wholly owned or controlled subsidiaries (collectively, “Comstock” or the “Company”). During 2011 and 2012 the consolidated financial statements also include the accounts of a variable interest entity where the Company was the primary beneficiary of the arrangements. All significant intercompany accounts and transactions have been eliminated in consolidation. The Company accounts for its undivided interest in oil and gas properties using the proportionate consolidation method, whereby its share of assets, liabilities, revenues and expenses are included in its financial statements.

Reclassifications

Certain reclassifications have been made to prior periods’ financial statements to conform to the current presentation.

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual amounts could differ from those estimates. Changes in the future estimated oil and natural gas reserves or the estimated future cash flows attributable to the reserves that are utilized for impairment analysis could have a significant impact on the future results of operations.

Concentration of Credit Risk and Accounts Receivable

Financial instruments that potentially subject the Company to a concentration of credit risk consist principally of cash and cash equivalents, accounts receivable and derivative financial instruments. The Company places its cash with high credit quality financial institutions and its derivative financial instruments with financial institutions and other firms that management believes have high credit ratings. Substantially all of the Company’s accounts receivable are due from either purchasers of oil and gas or participants in oil and gas wells for which the Company serves as the operator. Generally, operators of oil and gas wells have the right to offset future revenues against unpaid charges related to operated wells. Oil and gas sales are generally unsecured. The Company’s policy is to assess the collectability of its receivables based upon their age, the credit quality of the purchaser or participant and the potential for revenue offset. The Company has not had any significant credit losses in the past and believes its accounts receivable are fully collectible. Accordingly, no allowance for doubtful accounts has been provided.

Marketable Securities

As of December 31, 2011 and 2012, the Company owned 1,806,000 and 600,000 shares, respectively, of Stone Energy Corporation common stock which was reflected in the consolidated balance sheets as marketable securities. As of December 31, 2011 and 2012, the cost basis of the marketable securities was $16.6 million and $5.5 million, respectively. As of December 31, 2011 and 2012, the estimated fair value of the marketable securities was $47.6 million and $12.3 million, respectively, after recognizing unrealized gain after income taxes of $20.2 million and $4.4 million, respectively. The Company does not exert influence over the operating and financial policies of Stone, and has classified its investment in these shares as an available-for-sale security in the consolidated balance sheets. Available-for-sale securities are accounted for at fair value, with any unrealized gains and unrealized losses not determined to be other than temporary reported in the consolidated balance sheet within accumulated other comprehensive income as a separate component of stockholders’ equity. The Company utilizes the specific identification method to determine the cost of any securities sold. During 2010, 2011 and 2012 the Company sold 1,520,000, 1,991,000 and 1,206,000 shares of Stone common stock for proceeds of $30.5 million, $53.4 million and $37.7 million, respectively. Comstock realized gains before income taxes of $16.5 million, $35.1 million and $26.6 million on these sales during 2010, 2011 and 2012, respectively. The Company reviews its available-for-sale securities to determine whether a decline in fair value below the respective cost basis is other than temporary. Unrealized losses are charged against net earnings when a decline in fair value is determined to be other than temporary.

Other Current Assets

Other current assets at December 31, 2011 and 2012 consist of the following:

	As of December 31,
	2011		2012
	(In thousands)
Pipe and oil field equipment inventory	$	2,314	$	1,922
Production tax refunds receivable		—		1,830
Derivative settlements receivable		—		1,693
Drilling advances		—		1,160
Prepaid expenses		397		300
Other		85		49
	$	2,796	$	6,954

Fair Value Measurements

The Company holds or has held certain items that are required to be measured at fair value. These include cash equivalents held in bank accounts, marketable securities and derivative financial instruments in the form of oil price swap agreements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. A three-level hierarchy is followed for disclosure to show the extent and level of judgment used to estimate fair value measurements:

Level 1 – Inputs used to measure fair value are unadjusted quoted prices that are available in active markets for the identical assets or liabilities as of the reporting date.

Level 2 – Inputs used to measure fair value, other than quoted prices included in Level 1, are either directly or indirectly observable as of the reporting date through correlation with market data, including quoted prices for similar assets and liabilities in active markets and quoted prices in markets that are not active. Level 2 also includes assets and liabilities that are valued using models or other pricing methodologies that do not require significant judgment since the input assumptions used in the models, such as interest rates and volatility factors, are corroborated by readily observable data from actively quoted markets for substantially the full term of the financial instrument.

Level 3 – Inputs used to measure fair value are unobservable inputs that are supported by little or no market activity and reflect the use of significant management judgment. These values are generally determined using pricing models for which the assumptions utilize management’s estimates of market participant assumptions.

The Company’s cash and marketable securities valuation are based on Level 1 measurements. The Company’s oil and natural gas price swap agreements were not traded on a public exchange, and their value was determined utilizing a discounted cash flow model based on inputs that are readily available in public markets and, accordingly, the valuation of these swap agreements was categorized as a Level 2 measurement.

The following table summarizes financial assets accounted for at fair value as of December 31, 2012:

	Carrying Value Measured at Fair Value at December 31, 2012		Level 1		Level 2
	(In thousands)
Assets measured at fair value on a recurring basis:
Cash held in bank accounts	$	4,471	$	4,471	$	—
Marketable securities		12,312		12,312		—
Derivative financial instruments		11,651		—		11,651
Total assets	$	28,434	$	16,783	$	11,651

As of December 31, 2012 the Company had oil price swap agreements for 2,160,000 barrels of oil to be produced in 2013 with a fair value of $11.7 million. The Company has recognized an asset for this amount, and has recognized corresponding unrealized gain which is included in other income (expenses) during 2012. At December 31, 2011 the Company had oil price swap agreements for 1,440,000 barrels of oil to be produced in 2012 with a fair value of $0.5 million. The Company recognized a current asset for this amount, and recognized an unrealized gain of $0.3 million, net of income taxes of $0.2 million, which was included in other comprehensive income.

The following table summarizes the changes in the fair values of derivative financial instruments, which are Level 2 liabilities, for the years ended December 31, 2010, 2011 and 2012:

	2010		2011		2012
	(In thousands)
Balance beginning of period	$	—	$	—	$	459
Purchases and settlements (net)		—		—		(9,766)
Total realized or unrealized gains:
Realized gains included in earnings		—		—		9,766
Unrealized gains included in earnings		—		—		11,651
Unrealized gains included in other comprehensive income		—		459		(459)
Balance end of period	$	—	$	459	$	11,651

The following table presents the carrying amounts and estimated fair value of the Company’s other financial instruments as of December 31, 2011 and 2012:

	2011				2012
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(In thousands)
Long-term debt, including current portion	$	1,196,908	$	1,167,000	$	1,324,383	$	1,382,000

The fair market value of the Company’s fixed rate debt was based on the market prices as of December 31, 2011 and 2012, a Level 1 measurement. The fair value of the floating rate debt outstanding at December 31, 2011 and 2012 approximated its carrying value, a Level 2 measurement.

Property and Equipment

The Company follows the successful efforts method of accounting for its oil and gas properties. Acquisition costs for proved oil and gas properties, costs of drilling and equipping productive wells, and costs of unsuccessful development wells are capitalized and amortized on an equivalent unit-of-production basis over the life of the remaining related oil and gas reserves. Equivalent units are determined by converting oil to natural gas at the ratio of one barrel of oil for six thousand cubic feet of natural gas. This conversion ratio is not based on the price of oil or natural gas, and there may be a significant difference in price between an equivalent volume of oil versus natural gas. Cost centers for amortization purposes are determined on a field area basis. Costs incurred to acquire oil and gas leasehold are capitalized. The estimated future costs of dismantlement, restoration, plugging and abandonment of oil and gas properties and related facilities disposal are capitalized when asset retirement obligations are incurred and amortized as part of depreciation, depletion and amortization expense. The costs of unproved properties which are determined to be productive are transferred to proved oil and gas properties and amortized on an equivalent unit-of-production basis. Exploratory expenses, including geological and geophysical expenses and delay rentals for unevaluated oil and gas properties, are charged to expense as incurred. Unproved oil and gas properties are periodically assessed for impairment on a property by property basis, and any impairment in value is charged to exploration expense. During 2011 and 2012, impairment charges of $9.8 million and $61.3 million, respectively, were recognized in exploration expense related to certain leases that the Company no longer expects to drill on. Exploratory drilling costs are initially capitalized as unproved property but charged to expense if and when the well is determined not to have found commercial quantities of proved oil and gas reserves. Exploratory drilling costs are evaluated within a one-year period after the completion of drilling.

The Company periodically assesses the need for an impairment of the costs capitalized for its oil and gas properties on a property or cost center basis. If impairment is indicated based on undiscounted expected future cash flows attributable to the property, then a provision for impairment is recognized to the extent that net capitalized costs exceed the estimated fair value of the property. The fair value is based upon estimated discounted future cash flows which are derived from Level 3 inputs. Expected future cash flows are determined using estimated future prices based on market based forward prices applied to projected future production volumes. Costs are also projected to escalate at a rate that is based upon the Company’s historical experience. The projected production volumes are based on the property’s proved and risk adjusted probable oil and natural gas reserve estimates at the end of the period. The oil and natural gas prices used for determining asset impairments will generally differ from those used in the standardized measure of discounted future net cash flows because the standardized measure requires the use of an average price based on the first day of each month of the preceding year and is limited to proved reserves. The Company recognized impairment charges related to its oil and gas properties of $0.2 million, $60.8 million and $25.4 million in 2010, 2011, and 2012, respectively.

Other property and equipment consists primarily of gas gathering systems, computer equipment, furniture and fixtures and an airplane which are depreciated over estimated useful lives ranging from three to 31 ¹/₂ years on a straight-line basis.

Other Assets

Other assets primarily consist of deferred costs associated with issuance of the Company’s senior notes and bank credit facility. These costs are amortized over the life of the senior notes and the life of the bank credit facility on a straight-line basis which approximates the amortization that would be calculated using an effective interest rate method.

Accrued Expenses

Accrued expenses at December 31, 2011 and 2012 consist of the following:

	As of December 31,
	2011		2012
	(In thousands)
Accrued drilling costs	$	29,291	$	14,050
Accrued interest payable		11,113		12,351
Advance from joint venture partner		—		7,286
Accrued oil and gas property acquisition costs		31,988		2,413
Other		13,110		11,272
	$	85,502	$	47,372

Reserve for Future Abandonment Costs

The Company’s asset retirement obligations relate to future plugging and abandonment costs of its oil and gas properties and related facilities disposal. The Company records a liability in the period in which an asset retirement obligation is incurred, in an amount equal to the discounted estimated fair value of the obligation that is capitalized. Thereafter, this liability is accreted up to the final retirement cost. Accretion of the discount is included as part of depreciation, depletion and amortization in the accompanying consolidated financial statements.

The following table summarizes the changes in the Company’s total estimated liability:

	2010			2011			2012
	(In thousands)
Reserve for Future Abandonment Costs at beginning of the year	$	6,561		$	6,674		$	13,997
New wells placed on production		338			417			1,837
Changes in estimates		596			5,839			2,736
Acquisition liabilities assumed		—			741			—
Liabilities settled and assets disposed of		(1,212	)		(56	)		(1,304	)
Accretion expense		391			382			728
Reserve for Future Abandonment Costs at end of the year	$	6,674		$	13,997		$	17,994

Stock-based Compensation

The Company has stock-based employee compensation plans under which stock awards, comprised of restricted stock, stock options and performance share units are issued to employees and non-employee directors. The Company follows the fair value based method in accounting for equity-based compensation. Under the fair value based method, compensation cost is measured at the grant date based on the fair value of the award and is recognized on a straight-line basis over the award vesting period. Excess tax benefits on stock-based compensation are recognized as an adjustment to additional paid-in capital and as a part of cash flows from financing activities.

Segment Reporting

The Company presently operates in one business segment, the exploration and production of oil and natural gas.

Derivative Instruments and Hedging Activities

The Company accounts for derivative instruments (including certain derivative instruments embedded in other contracts) as either an asset or liability measured at its fair value. Changes in the fair value of derivatives are recognized currently in earnings unless specific hedge accounting criteria are met. The Company estimates fair value based on a discounted cash flow model and quotes obtained from the counterparties to the derivative contract. The fair value of derivative contracts that expire in less than one year are recognized as current assets or liabilities. Those that expire in more than one year are recognized as long-term assets or liabilities. Derivative financial instruments that are not accounted for as hedges are adjusted to fair value through income. If the derivative is designated as a cash flow hedge, changes in fair value are recognized in other comprehensive income until the hedged item is recognized in earnings.

Major Purchasers

In 2012 the Company had two purchasers of its oil and natural gas production that accounted for 42% and 27%, respectively, of total oil and gas sales. In 2011 the Company had two purchasers of its oil and natural gas production that accounted for 49% and 14%, respectively, of total oil and gas sales. In 2010 the Company had one purchaser of its oil and natural gas production that accounted for 39% of total oil and gas sales. The loss of any of these customers would not have a material adverse effect on the Company as there is an available market for its oil and natural gas production from other purchasers.

Revenue Recognition and Gas Balancing

Comstock utilizes the sales method of accounting for oil and natural gas revenues whereby revenues are recognized at the time of delivery based on the amount of oil or natural gas sold to purchasers. Revenue is typically recorded in the month of production based on an estimate of the Company’s share of volumes produced and prices realized. Revisions to such estimates are recorded as actual results are known. The amount of oil or natural gas sold may differ from the amount to which the Company is entitled based on its revenue interests in the properties. The Company did not have any significant imbalance positions at December 31, 2011 or 2012. Sales of oil and natural gas generally occur at the wellhead. When sales of oil and gas occur at locations other than the wellhead, the Company accounts for costs incurred to transport the production to the delivery point as operating expenses.

General and Administrative Expenses

General and administrative expenses are reported net of reimbursements of overhead costs that are received from working interest owners of the oil and gas properties operated by the Company of $10.6 million, $10.5 million and $11.5 million in 2010, 2011 and 2012, respectively.

Income Taxes

The Company accounts for income taxes using the asset and liability method, whereby deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of assets and liabilities and their respective tax basis, as well as the future tax consequences attributable to the future utilization of existing tax net operating loss and other types of carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences and carryforwards are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that the change in rate is enacted.

Earnings Per Share

Basic earnings per share is determined without the effect of any outstanding potentially dilutive stock options and diluted earnings per share is determined with the effect of outstanding stock options that are potentially dilutive. Unvested share-based payment awards containing nonforfeitable rights to dividends are considered to be participatory securities and included in the computation of basic and diluted earnings per share pursuant to the two-class method. Performance share units (“PSUs”) represent the right to receive a number of shares of the Company’s common stock that may range from zero to up to three times the number of PSUs granted on the award date based on the achievement of certain performance measures during a performance period. The number of potentially dilutive shares related to PSUs is based on the number of shares, if any, which would be issuable at the end of the respective period, assuming that date was the end of the contingency period. The treasury stock method is used to measure the dilutive effect of PSUs.

Basic and diluted earnings per share for 2010, 2011 and 2012 were determined as follows:

	2010								2011								2012
	Loss			Shares		Per Share			Loss			Shares		Per Share			Loss			Shares		Per Share
	(In thousands except per share data)
Net Loss	$	(19,586	)						$	(33,472	)						$	(100,060	)
Income Allocable to Unvested Stock Grants		—								—								—
Basic Net Loss Attributable to Common Stock	$	(19,586	)		45,561	$	(0.43	)	$	(33,472	)		45,997	$	(0.73	)	$	(100,060	)		46,422	$	(2.16	)
Effect of Dilutive Securities:
Stock Options		—			—					—			—					—			—
Performance Stock Units		—			—					—			—					—			—
Diluted Net Loss Attributable to Common Stock	$	(19,586	)		45,561	$	(0.43	)	$	(33,472	)		45,997	$	(0.73	)	$	(100,060	)		46,422	$	(2.16	)

At December 31, 2010, 2011 and 2012, 2,069,275, 2,114,520 and 1,960,835 shares of unvested restricted stock, respectively, are included in common stock outstanding as such shares have a nonforfeitable right to participate in any dividends that might be declared and have the right to vote. Weighted average shares of unvested restricted stock included in common stock outstanding were as follows:

	2010		2011		2012
	(In thousands)
Unvested restricted stock		1,715		1,683		1,737

All stock options, unvested stock and PSUs were anti-dilutive to earnings and excluded from weighted average shares used in the computation of earnings per share due to the net loss in each period.

Options to purchase common stock that were outstanding and that were excluded as anti-dilutive from determination of diluted earnings per share were as follows:

	2010		2011		2012
	(In thousands except per share data)
Weighted average anti-dilutive stock options		240		215		168
Weighted average exercise price	$	35.98	$	36.42	$	37.81

Supplementary Information With Respect to the Consolidated Statements of Cash Flows

For the purpose of the consolidated statements of cash flows, the Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.

Cash payments made for interest and income taxes for the years ended December 31, 2010, 2011 and 2012, respectively, were as follows:

	2010			2011			2012
	(In thousands)
Cash Payments:
Interest payments	$	40,467		$	49,109		$	79,001
Income tax refunds	$	(48,575	)	$	(1,403	)	$	(58	)

The Company capitalizes interest on its unevaluated oil and gas property costs during periods when it is conducting exploration activity on this acreage. The Company capitalized interest of $13.0 million, $13.2 million and $20.9 million in 2010, 2011 and 2012, respectively, which reduced interest expense and increased the carrying value of its unevaluated oil and gas properties.

Comprehensive Loss

Comprehensive loss consists of the following:

	For the Year Ended December 31,
	2010			2011			2012
	(In thousands)
Net Loss	$	(19,586	)	$	(33,472	)	$	(100,060	)
Other comprehensive income (loss):
Realized gains on marketable securities reclassified to earnings, net of provision for income taxes of ($5,785) in 2010, ($12,291) in 2011 and ($9,318) in 2012		(10,744	)		(22,827	)		(17,303	)
Unrealized hedging gains, net of provision for (benefit from) income taxes of $161 in 2011 and ($161) in 2012		—			298			(298	)
Unrealized gains on marketable securities, net of provision for income taxes of $6,707 in 2010, $5,748 in 2011 and $831 in 2012		12,455			10,675			1,543
Total comprehensive loss	$	(17,875	)	$	(45,326	)	$	(116,118	)

The following table provides a summary of the amounts included in accumulated other comprehensive income, net of income taxes, for the years ended December 31, 2010, 2011 and 2012:

	Oil Price Swap Agreements			Marketable Securities			Total Accumulated Comprehensive Income
	(In thousands)
Balance as of December 31, 2009	$	—		$	30,619		$	30,619
Reclassification to earnings		—			(10,744	)		(10,744	)
Changes in value		—			12,455			12,455
Balance as of December 31, 2010		—			32,330			32,330
Reclassification to earnings		—			(22,827	)		(22,827	)
Changes in value		298			10,675			10,973
Balance as of December 31, 2011		298			20,178			20,476
Reclassification to earnings		(298	)		(17,303	)		(17,601	)
Changes in value		—			1,543			1,543
Balance as of December 31, 2012	$	—		$	4,418		$	4,418

Subsequent Events

Subsequent events were evaluated through the issuance date of these consolidated financial statements.

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Stock-based Compensation - Summary of Restricted Stock Activity (Detail) (Restricted Stock [Member], USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning Balance, Number of Restricted Shares, Outstanding	2,114,520	2,069,275
Number of Restricted Shares, Granted	303,530
Number of Restricted Shares, Vested	(437,123)
Number of Restricted Shares, Forfeitures	(20,092)
Ending Balance, Number of Restricted Shares, Outstanding	1,960,835	2,114,520	2,069,275
Beginning Balance, Weighted Average Grant Price, Outstanding	$ 31.25
Weighted Average Grant Price, Granted	$ 15.49	$ 18.31	$ 25.61
Weighted Average Grant Price, Vested	$ 35.07
Weighted Average Grant Price, Forfeitures	$ 26.10
Ending Balance, Weighted Average Grant Price, Outstanding	$ 28.01	$ 31.25

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Summary of Significant Accounting Policies - Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended					12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net loss	$ (78,151)	$ (41,134)	$ 1,309	$ 3,949	$ 2,404	$ (100,060)	$ (33,472)	$ (19,586)
Other comprehensive income (loss):
Realized gains on marketable securities reclassified to earnings, net of provision for income taxes of ($5,785) in 2010, ($12,291) in 2011 and ($9,318) in 2012						(17,303)	(22,827)	(10,744)
Unrealized hedging gains, net of provision for (benefit from) income taxes of $161 in 2011 and ($161) in 2012						(298)	298
Unrealized gains on marketable securities, net of provision for income taxes of $6,707 in 2010, $5,748 in 2011 and $831 in 2012						1,543	10,675	12,455
Comprehensive loss						$ (116,118)	$ (45,326)	$ (17,875)

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Derivative Financial Instruments and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Outstanding Commodity Derivatives

As of December 31, 2012, the Company had the following outstanding commodity derivatives:

Commodity and Derivative Type	Weighted- Average Contract  Price		Volume (Barrels)		Contract Period
Oil Price Swap Agreements	$	98.67 per Bbl.		2,160,000		Jan. 2013 – Dec. 2013

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Tax Benefit

The following is an analysis of the consolidated income tax benefit:

	2010			2011			2012
	(In thousands)
Current	$	(229	)	$	28		$	(162	)
Deferred		(4,617	)		(14,652	)		(47,192	)
	$	(4,846	)	$	(14,624	)	$	(47,354	)

Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation

The difference between the Company’s customary rate of 35% and the effective tax rate on income before income taxes is due to the following:

	2010			2011			2012
	(In thousands)
Tax benefit at statutory rate	$	(8,551	)	$	(16,834	)	$	(51,595	)
Tax effect of:
Nondeductible compensation		4,253			2,753			2,545
State taxes, net of federal tax benefit		(343	)		(741	)		1,486
Net operating loss carryback adjustments		(369	)		—			—
Other		164			198			210
Total	$	(4,846	)	$	(14,624	)	$	(47,354	)

Difference Between Customary Rate and Effective Tax Rate on Income Before Income Taxes Due

The difference between the Company’s customary rate of 35% and the effective tax rate on income before income taxes is due to the following:

	2010			2011			2012
Statutory rate		35.0	%		35.0	%		35.0	%
Tax effect of:
Nondeductible compensation		(17.4	)		(5.7	)		(1.7	)
State taxes, net of federal tax benefit		1.4			1.5			(1.0	)
Net operating loss carryback adjustments		1.5			—			—
Other		(0.7	)		(0.4	)		(0.2	)
Effective tax rate		19.8	%		30.4	%		32.1	%

Tax Effects of Significant Temporary Differences Representing Net Deferred Tax Asset and Liability

The tax effects of significant temporary differences representing the net deferred tax asset and liability at December 31, 2011 and 2012 were as follows:

	2011			2012
	(In thousands)
Current deferred tax liabilities:
Marketable securities	$	(7,503	)	$	(1,262	)
Derivative financial instruments		(161	)		(4,078	)
Net current deferred tax liability		(7,664	)		(5,340	)
Noncurrent deferred tax liabilities:
Property and equipment		(253,580	)		(247,062	)
Other assets		8,772			8,319
Net operating loss carryforwards		47,320			95,180
Alternative minimum tax carryforward		19,093			19,080
Valuation allowance on net operating loss carryforwards		(19,630	)		(23,009	)
Other		(3,680	)		(2,409	)
Net noncurrent deferred tax liability		(201,705	)		(149,901	)
Net deferred tax liability	$	(209,369	)	$	(155,241	)

Carryforwards Available to Reduce Future Income Taxes

At December 31, 2012, Comstock had the following carryforwards available to reduce future income taxes:

Types of Carryforward	Years of Expiration Carryforward	Amount
		(In thousands)
Net operating loss — U.S. federal	2017 — 2032	$	192,255
Net operating loss — Louisiana	2012 — 2027	$	536,365
Alternative minimum tax credits	Unlimited	$	19,080

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Commitments and Contingencies - Minimum Future Payments under Leases (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Commitments And Contingencies [Line Items]
2013	$ 1,983
2014	2,012
2015	2,038
2016	1,994
2017	2,021
Thereafter	6,740
Operating Leases, Future Minimum Payments Due, Total	$ 16,788

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Summary of Significant Accounting Policies - Comprehensive Loss (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Provision for income taxes on realized gains on marketable securities reclassified to earnings	$ (9,318)	$ (12,291)	$ (5,785)
Provision for (benefit from) income taxes on unrealized hedging gains	(161)	161
Provision for income taxes on unrealized gains on marketable securities	$ 831	$ 5,748	$ 6,707

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Supplementary Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Supplementary Quarterly Financial Data (Unaudited)

	2011
	First			Second			Third			Fourth			Total
	(In thousands, except per share data)
Total oil and gas sales	$	88,038		$	112,451		$	119,422		$	114,456		$	434,367
Income (loss) from operations	$	(8,263	)	$	8,378		$	12,086		$	(53,517	)	$	(41,316	)
Net income (loss)	$	2,404		$	3,949		$	1,309		$	(41,134	)	$	(33,472	)
Net income (loss) per share:
Basic	$	0.05		$	0.08		$	0.03		$	(0.89	)	$	(0.73	)
Diluted	$	0.05		$	0.08		$	0.03		$	(0.89	)	$	(0.73	)
	2012
	First			Second			Third			Fourth			Total
	(In thousands, except per share data)
	(As Restated)			(As Restated)			(As Restated)
Total oil and gas sales	$	111,689		$	100,736		$	112,895		$	106,603		$	431,923
Income (loss) from operations	$	2,841		$	(8,046	)	$	(24,419	)	$	(102,036	)	$	(131,660	)
Net income (loss)	$	1,375		$	7,165		$	(30,449	)	$	(78,151	)	$	(100,060	)
Net income (loss) per share:
Basic	$	0.03		$	0.15		$	(0.66	)	$	(1.68	)	$	(2.16	)
Diluted	$	0.03		$	0.15		$	(0.66	)	$	(1.68	)	$	(2.16	)

Summary of Results of Operations from Non-Routine Items

Results of operations include the following non-routine items of income (expense), which are presented before the effect of income taxes:  

	2011
	First			Second			Third			Fourth			Total
	(In thousands, except per share data)
Gain on sales of marketable securities	$	21,249		$	8,480		$	2,484		$	2,905		$	35,118
Impairments of unproved oil and gas properties	$	(9,454	)	$	—		$	(364	)	$	—		$	(9,818	)
Impairments of proved oil and gas properties	$	—		$	—		$	—		$	(60,817	)	$	(60,817	)
	2012
	First			Second			Third			Fourth			Total
	(In thousands, except per share data)
Gain on sale of oil and gas properties	$	6,727		$	20,338		$	(2,794	)	$	—		$	24,271
Gain on sales of marketable securities	$	26,621		$	—		$	—		$	—		$	26,621
Impairments of unproved oil and gas properties	$	(1,315	)	$	—		$	(1,370	)	$	(58,615	)	$	(61,300	)
Impairments of proved oil and gas properties	$	(49	)	$	(5,301	)	$	—		$	(20,018	)	$	(25,368	)

Condensed Consolidated Balance Sheets

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited) 

	Three Months Ended March  31, 2012							Six Months Ended June 30, 2012							Nine Months  Ended September 30, 2012
	As Reported		Adjustments			As Restated		As Reported		Adjustments			As Restated		As Reported		Adjustments			As Restated
	(In thousands)
ASSETS
Cash and Cash Equivalents	$	3,750	$	—		$	3,750	$	3,505	$	—		$	3,505	$	2,569	$	—		$	2,569
Restricted Cash		9,549		—			9,549		—		—			—		—		—			—
Accounts Receivable		51,918		—			51,918		42,122		(1,235	)		40,887		51,907		(2,176	)		49,731
Marketable Securities		17,154		—			17,154		15,204		—			15,204		15,072		—			15,072
Assets Held for Sale		91,520		—			91,520		—		—			—		—		—			—
Derivative Financial Instruments		—		—			—		18,536		—			18,536		10,823		—			10,823
Other Current Assets		2,908		—			2,908		6,695		—			6,695		7,658		—			7,658
Total Current Assets		176,799		—			176,799		86,062		(1,235	)		84,827		88,029		(2,176	)		85,853
Net Property and Equipment		2,517,672		—			2,517,672		2,547,219		—			2,547,219		2,546,024		—			2,546,024
Derivative Financial Instruments		—		—			—		6,235		—			6,235		2,836		—			2,836
Other Assets		16,201		—			16,201		21,796		—			21,796		20,950		—			20,950
	$	2,710,672	$	—		$	2,710,672	$	2,661,312	$	(1,235	)	$	2,660,077	$	2,657,839	$	(2,176	)	$	2,655,663
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities	$	250,060	$	—		$	250,060	$	176,726		—		$	176,726		200,086	$	—		$	200,086
Long-term Debt		1,207,042		—			1,207,042		1,223,235		—			1,223,235		1,238,809		—			1,238,809
Deferred Income Taxes Payable		208,078		(863	)		207,215		203,530		2,881			206,411		190,784		(822	)		189,962
Reserve for Future Abandonment Costs		13,536		—			13,536		14,191		—			14,191		14,545		—			14,545
Derivative Financial Instruments		2,205		—			2,205		—		—			—		—		—			—
Other Non-Current Liabilities		2,394		—			2,394		2,337		—			2,337		2,301		—			2,301
Total Liabilities		1,683,315		(863	)		1,682,452		1,620,019		2,881			1,622,900		1,646,525		(822	)		1,645,703
Commitments and Contingencies
Stockholders’ Equity:
Common stock		24,058		—			24,058		24,081		—			24,081		24,081		—			24,081
Additional Paid-in Capital		470,844		—			470,844		473,881		—			473,881		477,199		—			477,199
Retained Earnings		531,236		(5,484	)		525,752		520,932		11,985			532,917		494,944		7,524			502,468
Accumulated Other Comprehensive Income		1,219		6,347			7,566		22,399		(16,101	)		6,298		15,090		(8,878	)		6,212
Total Stockholders’ Equity		1,027,357		863			1,028,220		1,041,293		(4,116	)		1,037,177		1,011,314		(1,354	)		1,009,960
	$	2,710,672	$	—		$	2,710,672	$	2,661,312	$	(1,235	)	$	2,660,077	$	2,657,839	$	(2,176	)	$	2,655,663

Consolidated Statements Of Operations

CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited) 

	Three Months Ended March 31, 2012									Three Months Ended June 30, 2012									Three Months  Ended September 30, 2012									Nine Months Ended September 30, 2012
	As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated
	(In thousands, except per share amounts)
Oil and gas sales	$	110,335		$	1,354		$	111,689		$	104,690		$	(3,954	)	$	100,736		$	117,129		$	(4,234	)	$	112,895		$	332,154		$	(6,834	)	$	325,320
Gain on sale of oil and gas properties		6,727			—			6,727			20,338			—			20,338			(2,794	)		—			(2,794	)		24,271			—			24,271
Total Revenues		117,062			1,354			118,416			125,028			(3,954	)		121,074			114,335			(4,234	)		110,101			356,425			(6,834	)		349,591
Total operating expenses		115,575			—			115,575			129,120			—			129,120			134,520			—			134,520			379,215			—			379,215
Operating income (loss)		1,487			1,354			2,841			(4,092	)		(3,954	)		(8,046	)		(20,185	)		(4,234	)		(24,419	)		(22,790	)		(6,834	)		(29,624	)
Other income (expenses):
Gain on sale of marketable securities		26,621			—			26,621			—			—			—			—			—			—			26,621			—			26,621
Realized gain (loss) from derivatives		—			(1,354	)		(1,354	)		—			2,719			2,719			—			3,293			3,293			—			4,658			4,658
Unrealized gain (loss) from derivatives		—			(10,187	)		(10,187	)		—			34,797			34,797			—			(11,112	)		(11,112	)		—			13,498			13,498
Other income		(23	)		262			239			545			(262	)		283			153			—			153			675			—			675
Interest expense		(13,237	)		—			(13,237	)		(14,529	)		—			(14,529	)		(17,535	)		—			(17,535	)		(45,301	)		—			(45,301	)
Total other income (expenses)		13,361			(11,279	)		2,082			(13,984	)		37,254			23,270			(17,382	)		(7,819	)		(25,201	)		(18,005	)		18,156			151
Income (loss) before income taxes		14,848			(9,925	)		4,923			(18,076	)		33,300			15,224			(37,567	)		(12,053	)		(49,620	)		(40,795	)		11,322			(29,473	)
Benefit from (provision for) income taxes		(7,989	)		4,441			(3,548	)		7,772			(15,831	)		(8,059	)		11,579			7,592			19,171			11,362			(3,798	)		7,564
Net income (loss)	$	6,859		$	(5,484	)	$	1,375		$	(10,304	)	$	17,469		$	7,165		$	(25,988	)	$	(4,461	)	$	(30,449	)	$	(29,433	)	$	7,524		$	(21,909	)
Net income (loss) per share:
Basic	$	0.14		$	(0.11	)	$	0.03		$	(0.22	)	$	0.37		$	0.15		$	(0.56	)	$	(0.10	)	$	(0.66	)	$	(0.63	)	$	0.16		$	(0.47	)
Diluted	$	0.14		$	(0.11	)	$	0.03		$	(0.22	)	$	0.37		$	0.15		$	(0.56	)	$	(0.10	)	$	(0.66	)	$	(0.63	)	$	0.16		$	(0.47	)
Weighted average shares outstanding:
Basic		46,372			—			46,372			46,426			—			46,426			46,443			—			46,443			46,414			—			46,414
Diluted		46,372			—			46,372			46,426			—			46,426			46,443			—			46,443			46,414			—			46,414

Consolidated Statements Of Comprehensive Income (Loss)

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(Unaudited)

	Three Months Ended March 31, 2012									Three Months Ended June 30, 2012
	As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated
	(In thousands, except per share amounts)
Net loss	$	6,859		$	(5,484	)	$	1,375		$	(10,304	)	$	17,469		$	7,165
Reclassified to earnings, net of provision for (benefit from) income taxes of $—, $161, $161, and $—, $—, $—		—			(298	)		(298	)		—			—			—
Unrealized hedging gains, net of provision for (benefit from) income taxes of $3,578, ($3,578), $— and ($12,087), $12,087, $—		(6,645	)		6,645			—			22,448			(22,448	)		—
Net change in unrealized gains and losses on marketable securities, net of benefit from (provision for) income taxes of $6,793, $—, $6,793, and $682, $—, $682		(12,612	)		—			(12,612	)		(1,268	)		—			(1,268	)
Other comprehensive income (loss)		(19,257	)		6,347			(12,910	)		21,180			(22,448	)		(1,268	)
Comprehensive income (loss)	$	(12,398	)	$	863		$	(11,535	)	$	10,876		$	(4,979	)	$	5,897

	Three Months Ended September 30, 2012									Nine Months Ended September 30, 2012
	As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated
	(In thousands, except per share amounts)
Net loss	$	(25,988	)	$	(4,461	)	$	(30,449	)	$	(29,433	)	$	7,524		$	(21,909	)
Reclassified to earnings, net of provision for (benefit from) income taxes of $—,$—, $— and $—, $161, $161		—			—			—			—			(298	)		(298	)
Unrealized hedging gains, net of provision for (benefit from) income taxes of $3,889, ($3,889), $— and ($4,620), $4,620, $—		(7,223	)		7,223			—			8,580			(8,580	)		—
Net change in unrealized gains and losses on marketable securities, net of benefit from (provision for) income taxes of $46, $—, $46 and $7,520, $—,$7,520		(86	)		—			(86	)		(13,966	)		—			(13,966	)
Other comprehensive income (loss)		(7,309	)		7,223			(86	)		(5,386	)		(8,878	)		(14,264	)
Comprehensive income (loss)	$	(33,297	)	$	2,762		$	(30,535	)	$	(34,819	)	$	(1,354	)	$	(36,173	)

Consolidated Statement Of Stockholders' Equity

CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY

(Unaudited) 

	Common Shares		Common Stock-Par Value		Additional Paid-in Capital			Retained Earnings			Accumulated Other Comprehensive Income			Total
	(In thousands)
Balance at December 31, 2011		48,125	$	24,063	$	468,709		$	524,377		$	20,476		$	1,037,625
Stock-based compensation		37		18		10,171			—			—			10,189
Excess income taxes from stock-based compensation		—		—		(1,681	)		—			—			(1,681	)
Net loss – as restated		—		—		—			(21,909	)		—			(21,909	)
Other comprehensive loss – as restated		—		—		—			—			(14,264	)		(14,264	)
Balance at September 30, 2012 – as restated		48,162	$	24,081	$	477,199		$	502,468		$	6,212		$	1,009,960

Consolidated Statements Of Cash Flows

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited) 

	Three Months Ended March  31, 2012									Six Months Ended June  30, 2012									Nine Months  Ended September 30, 2012
	As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated
	(In thousands)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income ( loss)	$	6,859		$	(5,484	)	$	1,375		$	(3,445	)	$	11,985		$	8,540		$	(29,433	)	$	7,524		$	(21,909	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Gain on sale of assets		(33,348	)		—			(33,348	)		(53,686	)		—			(53,686	)		(50,892	)		—			(50,892	)
Deferred income taxes		8,072			(4,441	)		3,631			416			11,390			11,806			(11,151	)		3,798			(7,353	)
Dry hole costs and leasehold impairments		1,315			—			1,315			1,315			—			1,315			2,685			—			2,685
Impairment of oil and gas properties		49			—			49			5,350			—			5,350			5,350			—			5,350
Depreciation, depletion and amortization		79,097			—			79,097			169,180			—			169,180			268,410			—			268,410
Unrealized gains from derivatives		262			9,925			10,187			—			(24,610	)		(24,610	)		—			(13,498	)		(13,498	)
Debt issuance cost and discount amortization		944			—			944			2,103			—			2,103			3,689			—			3,689
Stock-based compensation		3,535			—			3,535			6,860			—			6,860			10,189			—			10,189
Excess income taxes from stock-based compensation		1,405			—			1,405			1,670			—			1,670			1,681			—			1,681
Decrease in accounts receivable		1,815			—			1,815			11,611			1,235			12,846			1,826			2,176			4,002
Increase in other current assets		(199	)		—			(199	)		(4,097	)		—			(4,097	)		(5,059	)		—			(5,059	)
Increase in accounts payable and accrued expenses		63,374			—			63,374			4,621			—			4,621			28,403			—			28,403
Net cash provided by operating activities		133,180			—			133,180			141,898			—			141,898			225,698			—			225,698
CASH FLOWS FROM INVESTING ACTIVITIES:
Net cash used for investing activities		(146,423	)		—			(146,423	)		(164,560	)		—			(164,560	)		(264,119	)		—			(264,119	)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net cash provided by financing activities		8,533			—			8,533			17,707			—			17,707			32,530			—			32,530
Net decrease in cash and cash equivalents		(4,710	)		—			(4,710	)		(4,955	)		—			(4,955	)		(5,891	)		—			(5,891	)
Cash and cash equivalents, beginning of the year		8,460			—			8,460			8,460			—			8,460			8,460			—			8,460
Cash and cash equivalents, end of the year	$	3,750		$	—		$	3,750		$	3,505		$	—		$	3,505		$	2,569		$	—		$	2,569

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Oil and Gas Reserves Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Changes in Net Quantities of Crude Oil and Natural Gas Reserves

Set forth below is a summary of the changes in Comstock’s net quantities of oil and natural gas reserves for each of the three years ended December 31, 2012:

	2010						2011						2012
	Oil (MBbls)			Natural Gas (MMcf)			Oil (MBbls)			Natural Gas (MMcf)			Oil (MBbls)			Natural Gas (MMcf)
Proved Reserves:
Beginning of year		7,214			682,389			4,219			1,025,633			32,099			1,118,632
Revisions of previous estimates		351			(6,137	)		8			(36,150	)		(397	)		(531,335	)
Extensions and discoveries		1,484			421,657			9,845			169,188			17,312			31,050
Purchases of minerals in place		—			—			18,865			50,554			—			—
Disposals of minerals in place		(4,115	)		(3,303	)		—			—			(7,486	)		(59,257	)
Production		(715	)		(68,973	)		(838	)		(90,593	)		(2,309	)		(82,490	)
End of year		4,219			1,025,633			32,099			1,118,632			39,219			476,600
Proved Developed Reserves:
Beginning of year		4,894			367,102			2,961			506,809			8,405			550,474
End of year		2,961			506,809			8,405			550,474			12,308			368,775

Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Reserves

The following table sets forth the standardized measure of discounted future net cash flows relating to proved reserves at December 31, 2011 and 2012:

	2011			2012
	(In thousands)
Cash Flows Relating to Proved Reserves:
Future Cash Flows	$	7,656,654		$	5,064,519
Future Costs:
Production		(2,259,147	)		(1,585,309	)
Development and Abandonment		(2,174,656	)		(1,165,991	)
Future Income Taxes		(843,266	)		(552,843	)
Future Net Cash Flows		2,379,585			1,760,376
10% Discount Factor		(1,266,090	)		(976,159	)
Standardized Measure of Discounted Future Net Cash Flows	$	1,113,495		$	784,217

Changes in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Reserves

The following table sets forth the changes in the standardized measure of discounted future net cash flows relating to proved reserves for the years ended December 31, 2010, 2011 and 2012:

	2010			2011			2012
	(In thousands)
Standardized Measure, Beginning of Year	$	426,590		$	606,136		$	1,113,495
Net change in sales price, net of production costs		141,570			1,061			(428,469	)
Development costs incurred during the year which were previously estimated		69,216			205,418			211,020
Revisions of quantity estimates		(5,433	)		(50,398	)		(892,645	)
Accretion of discount		48,911			79,763			148,697
Changes in future development and abandonment costs		(15,201	)		10,151			653,824
Changes in timing and other		66,657			(58,049	)		(16,176	)
Extensions and discoveries		321,909			540,937			467,080
Purchases of minerals in place		—			316,118			—
Sales of minerals in place		(50,651	)		—			(261,971	)
Sales, net of production costs		(268,466	)		(355,654	)		(341,803	)
Net changes in income taxes		(128,966	)		(181,988	)		131,165
Standardized Measure, End of Year	$	606,136		$	1,113,495		$	784,217

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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (100,060)	$ (33,472)	$ (19,586)
Adjustments to reconcile net loss to net cash provided by operating activities:
(Gain) loss on sale of assets	(50,892)	(35,061)	10,103
Deferred income taxes	(47,192)	(14,652)	(4,617)
Dry hole costs and leasehold impairments	61,300	9,819
Impairment of oil and gas properties	25,368	60,817	224
Depreciation, depletion and amortization	365,286	290,776	213,809
Unrealized gains from derivatives	(11,490)
Debt issuance cost and discount amortization	5,277	4,300	2,436
Stock-based compensation	13,728	15,032	17,377
Excess income taxes from stock-based compensation	1,701	612	(1,491)
Decrease (increase) in accounts receivable	11,975	(9,046)	(4,432)
Decrease (increase) in other current assets	(4,309)	3,311	48,070
Increase (decrease) in accounts payable and accrued expenses	(8,463)	(7,532)	49,769
Net cash provided by operating activities	262,229	284,904	311,662
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(588,111)	(1,005,503)	(537,400)
Proceeds from sales of oil and gas properties	166,686		66,428
Proceeds from sales of marketable securities	37,705	53,417	30,499
Net cash used for investing activities	(383,720)	(952,086)	(440,473)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings	515,912	970,000	110,000
Principal payments on debt	(390,000)	(287,000)	(68,000)
Debt issuance costs	(6,709)	(8,478)	(4,847)
Proceeds from issuance of common stock			1,427
Excess income taxes from stock-based compensation	(1,701)	(612)	1,491
Net cash provided by financing activities	117,502	673,910	40,071
Net increase (decrease) in cash and cash equivalents	(3,989)	6,728	(88,740)
Cash and cash equivalents, beginning of the year	8,460	1,732	90,472
Cash and cash equivalents, end of the year	$ 4,471	$ 8,460	$ 1,732

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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended					12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Mar. 31, 2012	Sep. 30, 2011	Mar. 31, 2011	Dec. 31, 2012 Customer bbl	Dec. 31, 2011 bbl Customer	Dec. 31, 2010 Customer
Operations And Summary Of Significant Accounting Policies [Line Items]
Estimated fair value of Stone Energy Corporation common stock held for sale	$ 12,312,000					$ 12,312,000	$ 47,642,000
Proceeds from sale of Stone Energy Corporation common stock available for sale						37,705,000	53,417,000	30,499,000
Realized gain on available-for-sale securities before income tax						26,600,000	35,100,000	16,500,000
Quantity of barrels in swap agreements						2,160,000	1,440,000
Fair value of swap agreements	11,651,000					11,651,000
Unrealized gain in swap agreements						(298,000)	298,000
Income taxes on other comprehensive gain						(161,000)	161,000
Conversion ratio of oil to natural gas in units of production						One barrel of oil for six thousand cubic feet of natural gas
Impairment of unproved oil and natural gas properties	58,615,000	1,370,000	1,315,000	364,000	9,454,000	61,300,000	9,800,000
Impairment charges related to oil and gas properties						25,400,000	60,800,000	200,000
Number of major customers of oil and gas sales						2	2	1
General and administrative expenses reimbursements of overhead costs						11,500,000	10,500,000	10,600,000
Interest costs, capitalized during period						20,900,000	13,200,000	13,000,000
Oil swap agreement [Member]
Operations And Summary Of Significant Accounting Policies [Line Items]
Fair value of swap agreements	11,700,000					11,700,000	500,000
Unrealized gain in swap agreements							300,000
Income taxes on other comprehensive gain							200,000
Major Purchaser one [Member]
Operations And Summary Of Significant Accounting Policies [Line Items]
Percentage accounted of oil and gas sales						42.00%	49.00%	39.00%
Major Purchaser two [Member]
Operations And Summary Of Significant Accounting Policies [Line Items]
Percentage accounted of oil and gas sales						27.00%	14.00%
Performance Share Units (PSU) [Member]
Operations And Summary Of Significant Accounting Policies [Line Items]
Performance multiplier, minimum						0.00%
Performance multiplier, maximum						300.00%
Restricted Stock [Member]
Operations And Summary Of Significant Accounting Policies [Line Items]
Shares of unvested restricted stock outstanding	1,960,835					1,960,835	2,114,520	2,069,275
Fair value [Member]
Operations And Summary Of Significant Accounting Policies [Line Items]
Cost basis of Stone Energy Corporation common stock held for sale	5,500,000					5,500,000	16,600,000
Estimated fair value of Stone Energy Corporation common stock held for sale	12,300,000					12,300,000	47,600,000
Common stock marketable securities [Member]
Operations And Summary Of Significant Accounting Policies [Line Items]
Shares of Stone Energy Corporation common stock held by company	600,000					600,000	1,806,000
Unrealized gain on available sale securities net of tax	4,400,000					4,400,000	20,200,000
Shares of Stone Energy Corporation common stock sold by Company						1,206,000	1,991,000	1,520,000
Proceeds from sale of Stone Energy Corporation common stock available for sale						$ 37,700,000	$ 53,400,000	$ 30,500,000
Minimum [Member]
Operations And Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful lives						3 years
Maximum [Member]
Operations And Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful lives						31 years 6 months

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Oil and Gas Reserves Information (Unaudited) - Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Reserves (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Reserve Quantities [Line Items]
Percentage of discount factor	10.00%	10.00%

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Summary of Significant Accounting Policies - Weighted Average Shares of Unvested Restricted Stock (Detail) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Unvested restricted stock	1,737	1,683	1,715

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Long-term Debt - Debt by Year of Maturity (Parenthetical) (Detail)	Dec. 31, 2012
8 3/8% senior notes due 2017 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	8.375%
7 3/4% senior notes due 2019 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.75%
9 1/2% senior notes due 2020 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	9.50%

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Supplementary Quarterly Financial Data (Unaudited) - Schedule of Supplementary Quarterly Financial Data (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended					12 Months Ended			3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012 As Restated [Member]	Jun. 30, 2012 As Restated [Member]	Mar. 31, 2012 As Restated [Member]
Schedule Of Quarterly Financial Data [Line Items]
Total oil and gas sales	$ 106,603	$ 114,456	$ 119,422	$ 112,451	$ 88,038	$ 431,923	$ 434,367	$ 349,141	$ 112,895	$ 100,736	$ 111,689
Income (loss) from operations	(102,036)	(53,517)	12,086	8,378	(8,263)	(131,660)	(41,316)	(12,004)	(24,419)	(8,046)	2,841
Net income (loss)	$ (78,151)	$ (41,134)	$ 1,309	$ 3,949	$ 2,404	$ (100,060)	$ (33,472)	$ (19,586)	$ (30,449)	$ 7,165	$ 1,375
Net income (loss) per share:
Basic	$ (1.68)	$ (0.89)	$ 0.03	$ 0.08	$ 0.05	$ (2.16)	$ (0.73)	$ (0.43)	$ (0.66)	$ 0.15	$ 0.03
Diluted	$ (1.68)	$ (0.89)	$ 0.03	$ 0.08	$ 0.05	$ (2.16)	$ (0.73)	$ (0.43)	$ (0.66)	$ 0.15	$ 0.03

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CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
ASSETS
Cash and Cash Equivalents	$ 4,471	$ 8,460
Accounts Receivable:
Oil and gas sales	36,150	47,082
Joint interest operations	5,608	6,651
Marketable Securities	12,312	47,642
Derivative Financial Instruments	11,651	459
Other Current Assets	6,954	2,796
Total current assets	77,146	113,090
Property and Equipment:
Unevaluated oil and gas properties	263,652	369,096
Oil and gas properties, successful efforts method	3,779,716	3,476,146
Other	19,301	18,062
Accumulated depreciation, depletion and amortization	(1,592,616)	(1,353,459)
Net property and equipment	2,470,053	2,509,845
Other Assets	19,944	16,949
Total Assets	2,567,143	2,639,884
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts Payable	86,346	94,041
Deferred Income Taxes Payable	5,340	7,664
Accrued Expenses	47,372	85,502
Total current liabilities	139,058	187,207
Long-term Debt	1,324,383	1,196,908
Deferred Income Taxes Payable	149,901	201,705
Reserve for Future Abandonment Costs	17,994	13,997
Other Non-Current Liabilities	2,273	2,442
Total liabilities	1,633,609	1,602,259
Commitments and Contingencies
Stockholders' Equity:
Common stock-$0.50 par, 75,000,000 shares authorized, 48,125,296 and 48,408,734 shares issued and outstanding at December 31, 2011 and 2012, respectively	24,204	24,063
Additional paid-in capital	480,595	468,709
Accumulated other comprehensive income	4,418	20,476
Retained earnings	424,317	524,377
Total stockholders' equity	933,534	1,037,625
Total liabilities and stockholders' equity	$ 2,567,143	$ 2,639,884

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Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income, Net of Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accumulated Other Comprehensive Income Loss Net Of Tax [Line Items]
Beginning Balance, Oil Price Swap Agreements	$ 298
Reclassification to earnings, Oil Price Swap Agreements	(298)
Changes in value, Oil Price Swap Agreements		298
Ending Balance, Oil Price Swap Agreements		298
Beginning Balance, Marketable Securities	20,178	32,330	30,619
Reclassification to earnings, Marketable Securities	(17,303)	(22,827)	(10,744)
Changes in value, Marketable Securities	1,543	10,675	12,455
Ending Balance, Marketable Securities	4,418	20,178	32,330
Beginning Balance, Total Accumulated Comprehensive Income	20,476	32,330	30,619
Reclassification to earnings, Total Accumulated Comprehensive Income	(17,601)	(22,827)	(10,744)
Changes in value, Total Accumulated Comprehensive Income	1,543	10,973	12,455
Ending Balance, Total Accumulated Comprehensive Income	$ 4,418	$ 20,476	$ 32,330

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Unrealized hedging gains, income tax provision (benefit)	$ (161)	$ 161
Net change in unrealized gains and losses on marketable securities, income tax benefit (provision)	$ 8,487	$ 6,543	$ (923)

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Stock-based Compensation - Stock Options Outstanding (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Options Outstanding	157,150
Number of Options Exercisable	157,150
Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	$ 32.50
Weighted Average Remaining Life (in years)	2 years 10 months 24 days
Number of Options Outstanding	51,500
Number of Options Exercisable	51,500
Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	$ 33.22
Weighted Average Remaining Life (in years)	4 years
Number of Options Outstanding	65,650
Number of Options Exercisable	65,650
Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	$ 54.36
Weighted Average Remaining Life (in years)	4 months 24 days
Number of Options Outstanding	40,000
Number of Options Exercisable	40,000

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Summary of Significant Accounting Policies - Summary of Changes in Fair Value Level 2 Assets of Derivative Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Fair Value Disclosures [Line Items]
Balance beginning of period	$ 459
Purchases and settlements (net)	(9,766)
Total realized or unrealized gains
Realized gains included in earnings	9,766
Unrealized gains included in earnings	11,651
Unrealized gains included in other comprehensive income	(459)	459
Balance end of period	$ 11,651	$ 459

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Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012 Jurisdictions	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Line Items]
Customary Rate	35.00%	35.00%	35.00%
Valuation allowance on net operating loss carryforwards	$ 23,009,000	$ 19,630,000
State jurisdictions currently under review	2
U.S. Federal [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	36,900,000
Net operating loss carryforwards limitation on use	Limited to approximately $1.1 million per year pursuant to a prior change of control of an acquired company
Net operating loss carryforwards limitations	1,100,000
Valuation allowance on net operating loss carryforwards	23,000,000
Tax effect of valuation allowance on net operating loss carryforwards	8,000,000
Louisiana [Member]
Income Taxes [Line Items]
Valuation allowance on net operating loss carryforwards	288,000,000
Tax effect of valuation allowance on net operating loss carryforwards	$ 15,000,000

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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Other Current Assets

Other current assets at December 31, 2011 and 2012 consist of the following:

	As of December 31,
	2011		2012
	(In thousands)
Pipe and oil field equipment inventory	$	2,314	$	1,922
Production tax refunds receivable		—		1,830
Derivative settlements receivable		—		1,693
Drilling advances		—		1,160
Prepaid expenses		397		300
Other		85		49
	$	2,796	$	6,954

Summary of Financial Assets at Fair Value

The following table summarizes financial assets accounted for at fair value as of December 31, 2012:

	Carrying Value Measured at Fair Value at December 31, 2012		Level 1		Level 2
	(In thousands)
Assets measured at fair value on a recurring basis:
Cash held in bank accounts	$	4,471	$	4,471	$	—
Marketable securities		12,312		12,312		—
Derivative financial instruments		11,651		—		11,651
Total assets	$	28,434	$	16,783	$	11,651

Summary of Changes in Fair Value Level 2 Assets of Derivative Financial Instruments

The following table summarizes the changes in the fair values of derivative financial instruments, which are Level 2 liabilities, for the years ended December 31, 2010, 2011 and 2012:

	2010		2011		2012
	(In thousands)
Balance beginning of period	$	—	$	—	$	459
Purchases and settlements (net)		—		—		(9,766)
Total realized or unrealized gains:
Realized gains included in earnings		—		—		9,766
Unrealized gains included in earnings		—		—		11,651
Unrealized gains included in other comprehensive income		—		459		(459)
Balance end of period	$	—	$	459	$	11,651

Carrying Amounts and Estimated Fair Value of Other Financial Instruments

The following table presents the carrying amounts and estimated fair value of the Company’s other financial instruments as of December 31, 2011 and 2012:

	2011				2012
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(In thousands)
Long-term debt, including current portion	$	1,196,908	$	1,167,000	$	1,324,383	$	1,382,000

Summary of Accrued Expenses

Accrued expenses at December 31, 2011 and 2012 consist of the following:

	As of December 31,
	2011		2012
	(In thousands)
Accrued drilling costs	$	29,291	$	14,050
Accrued interest payable		11,113		12,351
Advance from joint venture partner		—		7,286
Accrued oil and gas property acquisition costs		31,988		2,413
Other		13,110		11,272
	$	85,502	$	47,372

Summary of Changes in Reserve for Future Abandonment Costs

The following table summarizes the changes in the Company’s total estimated liability:

	2010		2011		2012
	(In thousands)
Reserve for Future Abandonment Costs at beginning of the year	$	6,561	$	6,674	$	13,997
New wells placed on production		338		417		1,837
Changes in estimates		596		5,839		2,736
Acquisition liabilities assumed		—		741		—
Liabilities settled and assets disposed of		(1,212)		(56)		(1,304)
Accretion expense		391		382		728
Reserve for Future Abandonment Costs at end of the year	$	6,674	$	13,997	$	17,994

Basic and Diluted Earnings Per Share

Basic and diluted earnings per share for 2010, 2011 and 2012 were determined as follows:

	2010								2011								2012
	Loss			Shares		Per Share			Loss			Shares		Per Share			Loss			Shares		Per Share
	(In thousands except per share data)
Net Loss	$	(19,586	)						$	(33,472	)						$	(100,060	)
Income Allocable to Unvested Stock Grants		—								—								—
Basic Net Loss Attributable to Common Stock	$	(19,586	)		45,561	$	(0.43	)	$	(33,472	)		45,997	$	(0.73	)	$	(100,060	)		46,422	$	(2.16	)
Effect of Dilutive Securities:
Stock Options		—			—					—			—					—			—
Performance Stock Units		—			—					—			—					—			—
Diluted Net Loss Attributable to Common Stock	$	(19,586	)		45,561	$	(0.43	)	$	(33,472	)		45,997	$	(0.73	)	$	(100,060	)		46,422	$	(2.16	)

Weighted Average Shares of Unvested Restricted Stock

dividends that might be declared and have the right to vote. Weighted average shares of unvested restricted stock included in common stock outstanding were as follows:

	2010		2011		2012
	(In thousands)
Unvested restricted stock		1,715		1,683		1,737

Common Stock Stock Options Excluded as Anti-Dilutive from Determination of Diluted Earnings Per Share

Options to purchase common stock that were outstanding and that were excluded as anti-dilutive from determination of diluted earnings per share were as follows:

	2010		2011		2012
	(In thousands except per share data)
Weighted average anti-dilutive stock options		240		215		168
Weighted average exercise price	$	35.98	$	36.42	$	37.81

Cash Payments Made for Interest and Income Taxes

Cash payments made for interest and income taxes for the years ended December 31, 2010, 2011 and 2012, respectively, were as follows:

	2010			2011			2012
	(In thousands)
Cash Payments:
Interest payments	$	40,467		$	49,109		$	79,001
Income tax refunds	$	(48,575	)	$	(1,403	)	$	(58	)

Comprehensive Loss

Comprehensive loss consists of the following:

	For the Year Ended December 31,
	2010			2011			2012
	(In thousands)
Net Loss	$	(19,586	)	$	(33,472	)	$	(100,060	)
Other comprehensive income (loss):
Realized gains on marketable securities reclassified to earnings, net of provision for income taxes of ($5,785) in 2010, ($12,291) in 2011 and ($9,318) in 2012		(10,744	)		(22,827	)		(17,303	)
Unrealized hedging gains, net of provision for (benefit from) income taxes of $161 in 2011 and ($161) in 2012		—			298			(298	)
Unrealized gains on marketable securities, net of provision for income taxes of $6,707 in 2010, $5,748 in 2011 and $831 in 2012		12,455			10,675			1,543
Total comprehensive loss	$	(17,875	)	$	(45,326	)	$	(116,118	)

Accumulated Other Comprehensive Income, Net of Income Taxes

The following table provides a summary of the amounts included in accumulated other comprehensive income, net of income taxes, for the years ended December 31, 2010, 2011 and 2012:

	Oil Price Swap Agreements			Marketable Securities			Total Accumulated Comprehensive Income
	(In thousands)
Balance as of December 31, 2009	$	—		$	30,619		$	30,619
Reclassification to earnings		—			(10,744	)		(10,744	)
Changes in value		—			12,455			12,455
Balance as of December 31, 2010		—			32,330			32,330
Reclassification to earnings		—			(22,827	)		(22,827	)
Changes in value		298			10,675			10,973
Balance as of December 31, 2011		298			20,178			20,476
Reclassification to earnings		(298	)		(17,303	)		(17,601	)
Changes in value		—			1,543			1,543
Balance as of December 31, 2012	$	—		$	4,418		$	4,418

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Summary of Significant Accounting Policies - Carrying Amounts and Estimated Fair Value of Other Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Debt Disclosure [Line Items]
Long-term debt, including current portion, Carrying Value	$ 1,324,383	$ 1,196,908
Long-term debt, including current portion, Fair Value	$ 1,382,000	$ 1,167,000

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Oil and Gas Producing Activities (Tables)

12 Months Ended

Dec. 31, 2012

Capitalized Costs Related to Oil and Gas Property Acquisition Exploration and Development Activities

Capitalized Costs

	As of December 31,
	2011			2012
	(In thousands)
Unproved properties	$	369,096		$	263,652
Proved properties:
Leasehold costs		1,162,094			1,125,460
Wells and related equipment and facilities		2,314,052			2,654,256
Accumulated depreciation depletion and amortization		(1,349,871	)		(1,588,046	)
	$	2,495,371		$	2,455,322

Costs Incurred Related to Oil and Gas Property Acquisition Exploration and Development Activities

Costs Incurred

	For the Years Ended December 31,
	2010		2011		2012
	(In thousands)
Property Acquisitions:
Unproved property acquisitions	$	134,728	$	255,699	$	29,677
Proved property acquisitions		—		219,402		3,235
Development costs		315,041		496,506		514,629
Exploration costs		87,823		83,182		5,522
	$	537,592	$	1,054,789	$	553,063

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Income Taxes - Tax Effects of Significant Temporary Differences Representing Net Deferred Tax Asset and Liability (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current deferred tax liabilities:
Marketable securities	$ (1,262)	$ (7,503)
Derivative financial instruments	(4,078)	(161)
Net current deferred tax liability	(5,340)	(7,664)
Noncurrent deferred tax liabilities:
Property and equipment	(247,062)	(253,580)
Other assets	8,319	8,772
Net operating loss carryforwards	95,180	47,320
Alternative minimum tax carryforward	19,080	19,093
Valuation allowance on net operating loss carryforwards	(23,009)	(19,630)
Other	(2,409)	(3,680)
Net noncurrent deferred tax liability	(149,901)	(201,705)
Net deferred tax liability	$ (155,241)	$ (209,369)

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Beginning Balance at Dec. 31, 2009	$ 1,066,111	$ 23,552	$ 434,505	$ 577,435	$ 30,619
Beginning Balance, Shares at Dec. 31, 2009		47,104
Exercise of stock options	1,427	92	1,335
Exercise of stock options, Shares		184
Stock-based compensation	17,377	209	17,168
Stock-based compensation, Shares		418
Excess income taxes from stock-based compensation	1,491		1,491
Net loss	(19,586)			(19,586)
Other comprehensive income (loss)	1,711				1,711
Ending Balance at Dec. 31, 2010	1,068,531	23,853	454,499	557,849	32,330
Ending Balance, shares at Dec. 31, 2010		47,706
Stock-based compensation	15,032	210	14,822
Stock-based compensation, Shares		419
Excess income taxes from stock-based compensation	(612)		(612)
Net loss	(33,472)			(33,472)
Other comprehensive income (loss)	(11,854)				(11,854)
Ending Balance at Dec. 31, 2011	1,037,625	24,063	468,709	524,377	20,476
Ending Balance, shares at Dec. 31, 2011		48,125
Stock-based compensation	13,728	141	13,587
Stock-based compensation, Shares		284
Excess income taxes from stock-based compensation	(1,701)		(1,701)
Net loss	(100,060)			(100,060)
Other comprehensive income (loss)	(16,058)				(16,058)
Ending Balance at Dec. 31, 2012	$ 933,534	$ 24,204	$ 480,595	$ 424,317	$ 4,418
Ending Balance, shares at Dec. 31, 2012		48,409

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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Common stock, par value	$ 0.50	$ 0.50
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	48,408,734	48,125,296
Common stock, shares outstanding	48,408,734	48,125,296

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Income Taxes

12 Months Ended

Dec. 31, 2012

Income Taxes

(9)   Income Taxes

The following is an analysis of the consolidated income tax benefit:

	2010			2011			2012
	(In thousands)
Current	$	(229	)	$	28		$	(162	)
Deferred		(4,617	)		(14,652	)		(47,192	)
	$	(4,846	)	$	(14,624	)	$	(47,354	)

Deferred income taxes are provided to reflect the future tax consequences or benefits of differences between the tax basis of assets and liabilities and their reported amounts in the financial statements using enacted tax rates. The difference between the Company’s customary rate of 35% and the effective tax rate on income before income taxes is due to the following:

	2010			2011			2012
	(In thousands)
Tax benefit at statutory rate	$	(8,551	)	$	(16,834	)	$	(51,595	)
Tax effect of:
Nondeductible compensation		4,253			2,753			2,545
State taxes, net of federal tax benefit		(343	)		(741	)		1,486
Net operating loss carryback adjustments		(369	)		—			—
Other		164			198			210
Total	$	(4,846	)	$	(14,624	)	$	(47,354	)

	2010			2011			2012
Statutory rate		35.0	%		35.0	%		35.0	%
Tax effect of:
Nondeductible compensation		(17.4	)		(5.7	)		(1.7	)
State taxes, net of federal tax benefit		1.4			1.5			(1.0	)
Net operating loss carryback adjustments		1.5			—			—
Other		(0.7	)		(0.4	)		(0.2	)
Effective tax rate		19.8	%		30.4	%		32.1	%

The tax effects of significant temporary differences representing the net deferred tax asset and liability at December 31, 2011 and 2012 were as follows:

	2011			2012
	(In thousands)
Current deferred tax liabilities:
Marketable securities	$	(7,503	)	$	(1,262	)
Derivative financial instruments		(161	)		(4,078	)
Net current deferred tax liability		(7,664	)		(5,340	)
Noncurrent deferred tax liabilities:
Property and equipment		(253,580	)		(247,062	)
Other assets		8,772			8,319
Net operating loss carryforwards		47,320			95,180
Alternative minimum tax carryforward		19,093			19,080
Valuation allowance on net operating loss carryforwards		(19,630	)		(23,009	)
Other		(3,680	)		(2,409	)
Net noncurrent deferred tax liability		(201,705	)		(149,901	)
Net deferred tax liability	$	(209,369	)	$	(155,241	)

At December 31, 2012, Comstock had the following carryforwards available to reduce future income taxes:

Types of Carryforward	Years of Expiration Carryforward	Amount
		(In thousands)
Net operating loss — U.S. federal	2017 — 2032	$	192,255
Net operating loss — Louisiana	2012 — 2027	$	536,365
Alternative minimum tax credits	Unlimited	$	19,080

Utilization of $36.9 million of the U.S. federal net operating loss carryforwards is limited to approximately $1.1 million per year pursuant to a prior change of control of an acquired company, and a valuation allowance of $23.0 million, with a tax effect of $8.0 million, has been established for the estimated U.S. federal net operating loss carryforwards that will not be utilized. Realization of the remaining U.S. federal net operating loss carryforwards requires Comstock to generate taxable income within the carryforward period. A valuation allowance of $288.0 million, with a tax effect of $15.0 million, has been established against the Louisiana state net operating loss carryforwards due to the uncertainty of generating taxable income in the state of Louisiana prior to the expiration of the carryforward period.

The Company’s federal income tax returns for the years subsequent to December 31, 2007 remain subject to examination. The Company’s income tax returns in major state income tax jurisdictions remain subject to examination for various periods subsequent to December 31, 2007. State tax returns in two state jurisdictions are currently under review. The Company currently believes that resolution of these matters will not have a material impact on its financial statements. The Company currently believes that its significant filing positions are highly certain and that all of its other significant income tax filing positions and deductions would be sustained upon audit or the final resolution would not have a material effect on the consolidated financial statements. Therefore, the Company has not established any significant reserves for uncertain tax positions. Interest and penalties resulting from audits by tax authorities have been immaterial and are included in the provision for income taxes in the consolidated statements of operations.

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Document and Entity Information (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Feb. 28, 2013	Jun. 30, 2012
Entity Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY
Trading Symbol	CRK
Entity Registrant Name	COMSTOCK RESOURCES INC
Entity Central Index Key	0000023194
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		48,303,517
Entity Public Float			$ 734.6

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Derivative Financial Instruments and Hedging Activities

12 Months Ended

Dec. 31, 2012

Derivative Financial Instruments and Hedging Activities

(10)    Derivative Financial Instruments and Hedging Activities

Comstock periodically uses swaps, floors and collars to hedge oil and natural gas prices and interest rates. Swaps are settled monthly based on differences between the prices specified in the instruments and the settlement prices of futures contracts. Generally, when the applicable settlement price is less than the price specified in the contract, Comstock receives a settlement from the counterparty based on the difference multiplied by the volume or amounts hedged. Similarly, when the applicable settlement price exceeds the price specified in the contract, Comstock pays the counterparty based on the difference. Comstock generally receives a settlement from the counterparty for floors when the applicable settlement price is less than the price specified in the contract, which is based on the difference multiplied by the volumes hedged. For collars, generally Comstock receives a settlement from the counterparty when the settlement price is below the floor and pays a settlement to the counterparty when the settlement price exceeds the cap. No settlement occurs when the settlement price falls between the floor and cap.

During 2012, the Company hedged 1,710,000 barrels of its oil production at an average NYMEX West Texas Intermediate (“WTI”) oil price of $99.46 per barrel. As of December 31, 2012, the Company had the following outstanding commodity derivatives:

Commodity and Derivative Type	Weighted- Average Contract  Price		Volume (Barrels)		Contract Period
Oil Price Swap Agreements	$	98.67 per Bbl.		2,160,000		Jan. 2013 – Dec. 2013

The Company recognizes the realized gains and losses, and the unrealized gains and losses due to the change in the fair value of its derivative financial instruments, as separate components of other income (expenses). The Company had realized gains of $9.8 million on its oil swaps that settled during 2012. The estimated fair value of the Company’s derivative financial instruments, which equals their carrying value, was an asset of $11.7 million as of December 31, 2012, which is reflected as a current asset based on estimated settlement dates.

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Oil and Gas Reserves Information (Unaudited) - Summary of Changes in Net Quantities of Crude Oil and Natural Gas Reserves (Detail)	12 Months Ended
	Dec. 31, 2012 MBbls	Dec. 31, 2011 MBbls	Dec. 31, 2010 MBbls
Oil (MBbls) [Member]
Proved Reserves:
Beginning of year	32,099	4,219	7,214
Revisions of previous estimates	(397)	8	351
Extensions and discoveries	17,312	9,845	1,484
Purchases of minerals in place		18,865
Disposals of minerals in place	(7,486)		(4,115)
Production	(2,309)	(838)	(715)
End of year	39,219	32,099	4,219
Proved Developed Reserves:
Beginning of year	8,405	2,961	4,894
End of year	12,308	8,405	2,961
Natural Gas (MMcf) [Member]
Proved Reserves:
Beginning of year	1,118,632	1,025,633	682,389
Revisions of previous estimates	(531,335)	(36,150)	(6,137)
Extensions and discoveries	31,050	169,188	421,657
Purchases of minerals in place		50,554
Disposals of minerals in place	(59,257)		(3,303)
Production	(82,490)	(90,593)	(68,973)
End of year	476,600	1,118,632	1,025,633
Proved Developed Reserves:
Beginning of year	550,474	506,809	367,102
End of year	368,775	550,474	506,809

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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Oil and gas sales	$ 431,923	$ 434,367	$ 349,141
Gain on sale of oil and gas properties	24,271
Total revenues	456,194	434,367	349,141
Operating expenses:
Production taxes	14,021	3,670	9,894
Gathering and transportation	27,312	28,491	17,256
Lease operating	60,620	46,552	53,525
Exploration	61,449	10,148	2,605
Depreciation, depletion and amortization	365,286	290,776	213,809
General and administrative, net	33,798	35,172	37,200
Impairment of oil and gas properties	25,368	60,817	224
Loss on sale of oil and gas properties		57	26,632
Total operating expenses	587,854	475,683	361,145
Operating loss	(131,660)	(41,316)	(12,004)
Other income (expenses):
Gain on sale of marketable securities	26,621	35,118	16,529
Realized gain from derivatives	9,766
Unrealized gain from derivatives	11,490
Other income	944	790	499
Interest expense	(64,575)	(42,688)	(29,456)
Total other income (expenses)	(15,754)	(6,780)	(12,428)
Loss before income taxes	(147,414)	(48,096)	(24,432)
Benefit from income taxes	47,354	14,624	4,846
Net loss	$ (100,060)	$ (33,472)	$ (19,586)
Net loss per share:
Basic	$ (2.16)	$ (0.73)	$ (0.43)
Diluted	$ (2.16)	$ (0.73)	$ (0.43)
Weighted average shares outstanding:
Basic	46,422	45,997	45,561
Diluted	46,422	45,997	45,561

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Long-term Debt

12 Months Ended

Dec. 31, 2012

Long-term Debt

(4)    Long-term Debt

Long-term debt is comprised of the following:

	As of December 31,
	2011			2012
	(In thousands)
Bank credit facility	$	600,000		$	440,000
8 3/8% senior notes due 2017		300,000			300,000
Discount related to 8 3/8% senior notes due 2017		(3,092	)		(2,556	)
7 3/4% senior notes due 2019		300,000			300,000
9 1/2% senior notes due 2020		—			300,000
Discount related to 9 1/2% senior notes due 2020		—			(13,061	)
	$	1,196,908		$	1,324,383

The discount on the 8 ³/₈% and 9 ¹/₂% senior notes are being amortized over the life of the senior notes using the effective interest rate method.

The following table summarizes Comstock’s debt as of December 31, 2012 by year of maturity:

	2013		2014		2015		2016		2017		Thereafter		Total
	(In thousands)
Bank credit facility	$	—	$	—	$	440,000	$	—	$	—	$	—	$	440,000
8 3/8% senior notes		—		—		—		—		297,444		—		297,444
7 3/4% senior notes		—		—		—		—		—		300,000		300,000
9 1/2% senior notes		—		—		—		—		—		286,939		286,939
	$	—	$	—	$	440,000	$	—	$	297,444	$	586,939	$	1,324,383

Comstock has a $850.0 million bank credit facility with Bank of Montreal, as the administrative agent. The credit facility is a five year revolving credit commitment that matures on November 30, 2015. Indebtedness under the credit facility is secured by substantially all of Comstock’s assets and is guaranteed by all of its wholly owned subsidiaries. The credit facility is subject to borrowing base availability, which is redetermined semiannually based on the banks’ estimates of the Company’s future net cash flows of oil and natural gas properties. The borrowing base may be affected by the performance of Comstock’s properties and changes in oil and natural gas prices. The determination of the borrowing base is at the sole discretion of the administrative agent and the bank group. As of December 31, 2012, the borrowing base was $570.0 million, $130.0 million of which was available. Borrowings under the credit facility bear interest, based on the utilization of the borrowing base, at Comstock’s option at either (1) LIBOR plus 1.75% to 2.75% or (2) the base rate (which is the higher of the administrative agent’s prime rate, the federal funds rate plus 0.5% or 30 day LIBOR plus 1.0%) plus 0.75% to 1.75%. A commitment fee of 0.5% is payable annually on the unused borrowing base. The credit facility contains covenants that, among other things, restrict the payment of cash dividends in excess of $50.0 million, limit the amount of consolidated debt that Comstock may incur and limit the Company’s ability to make certain loans and investments. The only financial covenants are the maintenance of a ratio of current assets, including availability under the bank credit facility, to current liabilities and maintenance of a leverage ratio. The Company was in compliance with these covenants as of December 31, 2012.

On June 5, 2012 the Company issued $300.0 million of senior notes (the “2020 Notes”) pursuant to an underwritten public offering. The 2020 Notes are due on June 15, 2020 and bears interest at 9 ¹/₂%, which is payable semi-annually on each June 15 and December 15. Proceeds from the issuance of the 2020 Notes were used to pay down outstanding borrowings under the Company’s bank credit facility. On March 14, 2011, Comstock issued $300.0 million of senior notes (the “2019 Notes”) pursuant to an underwritten public offering. The 2019 Notes are due on April 1, 2019 and bear interest at 7 ³/₄%, which is payable semiannually on each April 1 and October 1. Comstock also has $300.0 million of 8 ³/₈% senior notes outstanding which mature on October 15, 2017 (the “2017 Notes”). Interest on the 2017 Notes is payable semiannually on each April 15 and October 15. The 2017, 2019 and 2020 Notes are unsecured obligations of Comstock and are guaranteed by all of Comstock’s material subsidiaries. Such subsidiary guarantors are 100% owned and all of the guarantees are full and unconditional and joint and several obligations. As of December 31, 2012, Comstock had no material assets or operations which are independent of its subsidiaries. There are no restrictions on the ability of Comstock to obtain funds from its subsidiaries through dividends or loans.

On January 1, 2011, Comstock had $172.0 million in principal amount of 6 ⁷/₈% senior notes outstanding due in 2012 (the “2012 Notes”). Comstock redeemed all of the 2012 Notes in March 2011 for $172.4 million. The early extinguishment of the 2012 Notes resulted in a loss of $1.1 million which is included in interest expense in the consolidated financial statements. This loss is comprised of the premium paid for the redemption of the 2012 Notes, the costs incurred related to the tender offer, and the write-off of unamortized debt issuance costs related to the 2012 Notes.

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Oil and Gas Producing Activities

12 Months Ended

Dec. 31, 2012

Oil and Gas Producing Activities

(3)    Oil and Gas Producing Activities

Set forth below is certain information regarding the aggregate capitalized costs of oil and gas properties and costs incurred by the Company for its oil and gas property acquisition, development and exploration activities:

Capitalized Costs

	As of December 31,
	2011			2012
	(In thousands)
Unproved properties	$	369,096		$	263,652
Proved properties:
Leasehold costs		1,162,094			1,125,460
Wells and related equipment and facilities		2,314,052			2,654,256
Accumulated depreciation depletion and amortization		(1,349,871	)		(1,588,046	)
	$	2,495,371		$	2,455,322

Costs Incurred

	For the Years Ended December 31,
	2010		2011		2012
	(In thousands)
Property Acquisitions:
Unproved property acquisitions	$	134,728	$	255,699	$	29,677
Proved property acquisitions		—		219,402		3,235
Development costs		315,041		496,506		514,629
Exploration costs		87,823		83,182		5,522
	$	537,592	$	1,054,789	$	553,063

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Acquisitions and Dispositions of Oil and Gas Properties (Tables)

12 Months Ended

Dec. 31, 2012

Purchase Price Allocation including Final Post-Closing Adjustments

The purchase price allocation, including final post-closing adjustments finalized during 2012, was as follows:

	(In thousands)
Consideration paid:
Cash	$	337,896
Total consideration paid	$	337,896

Amounts Recognized for Fair Value of Assets Acquired and Liabilities Assumed

Amounts recognized for the fair value of assets acquired and liabilities assumed were as follows:

	(In thousands)
Proved properties	$	205,758
Unproved properties		143,751
Asset retirement obligation		(741	)
Liabilities assumed		(10,872	)
Net fair value of properties acquired and liabilities assumed	$	337,896

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Supplementary Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2012

Supplementary Quarterly Financial Data (Unaudited)

(11)   Supplementary Quarterly Financial Data (Unaudited)

	2011
	First			Second			Third			Fourth			Total
	(In thousands, except per share data)
Total oil and gas sales	$	88,038		$	112,451		$	119,422		$	114,456		$	434,367
Income (loss) from operations	$	(8,263	)	$	8,378		$	12,086		$	(53,517	)	$	(41,316	)
Net income (loss)	$	2,404		$	3,949		$	1,309		$	(41,134	)	$	(33,472	)
Net income (loss) per share:
Basic	$	0.05		$	0.08		$	0.03		$	(0.89	)	$	(0.73	)
Diluted	$	0.05		$	0.08		$	0.03		$	(0.89	)	$	(0.73	)
	2012
	First			Second			Third			Fourth			Total
	(In thousands, except per share data)
	(As Restated)			(As Restated)			(As Restated)
Total oil and gas sales	$	111,689		$	100,736		$	112,895		$	106,603		$	431,923
Income (loss) from operations	$	2,841		$	(8,046	)	$	(24,419	)	$	(102,036	)	$	(131,660	)
Net income (loss)	$	1,375		$	7,165		$	(30,449	)	$	(78,151	)	$	(100,060	)
Net income (loss) per share:
Basic	$	0.03		$	0.15		$	(0.66	)	$	(1.68	)	$	(2.16	)
Diluted	$	0.03		$	0.15		$	(0.66	)	$	(1.68	)	$	(2.16	)

Basic and diluted per share amounts are the same for each of the quarters ended December 31, 2011, September 30, 2012, December 31, 2012 and for the years ended December 31, 2011 and December 31, 2012 due to the net loss reported during each of these periods.

Results of operations include the following non-routine items of income (expense), which are presented before the effect of income taxes:

	2011
	First			Second			Third			Fourth			Total
	(In thousands, except per share data)
Gain on sales of marketable securities	$	21,249		$	8,480		$	2,484		$	2,905		$	35,118
Impairments of unproved oil and gas properties	$	(9,454	)	$	—		$	(364	)	$	—		$	(9,818	)
Impairments of proved oil and gas properties	$	—		$	—		$	—		$	(60,817	)	$	(60,817	)
	2012
	First			Second			Third			Fourth			Total
	(In thousands, except per share data)
Gain on sale of oil and gas properties	$	6,727		$	20,338		$	(2,794	)	$	—		$	24,271
Gain on sales of marketable securities	$	26,621		$	—		$	—		$	—		$	26,621
Impairments of unproved oil and gas properties	$	(1,315	)	$	—		$	(1,370	)	$	(58,615	)	$	(61,300	)
Impairments of proved oil and gas properties	$	(49	)	$	(5,301	)	$	—		$	(20,018	)	$	(25,368	)

The Company is restating its financial statements for each of the fiscal quarters ended March 31, 2012, June 30, 2012, and September 30, 2012 with respect to the accounting and disclosures for certain derivative financial transactions under Accounting Standards Codification Topic 815, Derivatives and Hedging (“ASC 815”). The Company determined that the formal documentation it had prepared to support its initial hedge designations for effectiveness in connection with the Company’s oil hedging program was not compliant with the technical documentation requirements to qualify for cash flow hedge accounting treatment in accordance with ASC 815, and as a result, the Company was not permitted to utilize hedge accounting treatment in the preparation of its financial statements. The restatements eliminate hedge accounting treatment which had been applied in 2012 and reflect other immaterial adjustments to oil and gas sales.

Under ASC 815, the fair value of hedge contracts is recognized in the Company’s consolidated balance sheet as an asset or liability, as the case may be, and the amounts received or paid under the hedge contracts are reflected in earnings during the period in which the underlying production occurs. If the hedge contracts qualify for cash flow hedge accounting treatment, the fair value of the hedge contract is recorded in “accumulated other comprehensive income”, and changes in the fair value do not affect net income in the period. If the hedge contract does not qualify for hedge accounting treatment, the change in the fair value of the hedge contract is reflected in earnings during the period as unrealized gain or loss from derivatives. Under the cash flow hedge accounting treatment used by the Company, the fair value of the hedge contracts were recognized in the consolidated balance sheet with the resulting unrealized gain or loss recorded initially in “accumulated other comprehensive income” and later reclassified through earnings when the hedged production impacted earnings. As a result of the determination that the designation documentation failed to meet the requirements necessary to utilize cash flow hedge accounting treatment, the unrealized gain or loss should have been recorded in the consolidated statements of operations as a component of earnings. The Company has also been recognizing realized gains and losses from its derivative financial instruments in oil and gas sales, and is reclassifying these amounts as a separate component of non-operating income and expense.

The following tables present the restated condensed consolidated statements of operations and statements of other comprehensive income (loss) for the three months ended March 31, 2012, June 30, 2012 and September 30, 2012 and the nine months ended September 30, 2012, the restated condensed consolidated balance sheets as of March 31, 2012, June 30, 2012 and September 30, 2012, the consolidated statement of stockholders’ equity for the nine months ended September 30, 2012 and the condensed consolidated statements of cash flows for the three months ended March 31, 2012, the six months ended June 30, 2012 and the nine months ended September 30, 2012:

CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

	Three Months Ended March 31, 2012									Three Months Ended June 30, 2012									Three Months  Ended September 30, 2012									Nine Months Ended September 30, 2012
	As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated
	(In thousands, except per share amounts)
Oil and gas sales	$	110,335		$	1,354		$	111,689		$	104,690		$	(3,954	)	$	100,736		$	117,129		$	(4,234	)	$	112,895		$	332,154		$	(6,834	)	$	325,320
Gain on sale of oil and gas properties		6,727			—			6,727			20,338			—			20,338			(2,794	)		—			(2,794	)		24,271			—			24,271
Total Revenues		117,062			1,354			118,416			125,028			(3,954	)		121,074			114,335			(4,234	)		110,101			356,425			(6,834	)		349,591
Total operating expenses		115,575			—			115,575			129,120			—			129,120			134,520			—			134,520			379,215			—			379,215
Operating income (loss)		1,487			1,354			2,841			(4,092	)		(3,954	)		(8,046	)		(20,185	)		(4,234	)		(24,419	)		(22,790	)		(6,834	)		(29,624	)
Other income (expenses):
Gain on sale of marketable securities		26,621			—			26,621			—			—			—			—			—			—			26,621			—			26,621
Realized gain (loss) from derivatives		—			(1,354	)		(1,354	)		—			2,719			2,719			—			3,293			3,293			—			4,658			4,658
Unrealized gain (loss) from derivatives		—			(10,187	)		(10,187	)		—			34,797			34,797			—			(11,112	)		(11,112	)		—			13,498			13,498
Other income		(23	)		262			239			545			(262	)		283			153			—			153			675			—			675
Interest expense		(13,237	)		—			(13,237	)		(14,529	)		—			(14,529	)		(17,535	)		—			(17,535	)		(45,301	)		—			(45,301	)
Total other income (expenses)		13,361			(11,279	)		2,082			(13,984	)		37,254			23,270			(17,382	)		(7,819	)		(25,201	)		(18,005	)		18,156			151
Income (loss) before income taxes		14,848			(9,925	)		4,923			(18,076	)		33,300			15,224			(37,567	)		(12,053	)		(49,620	)		(40,795	)		11,322			(29,473	)
Benefit from (provision for) income taxes		(7,989	)		4,441			(3,548	)		7,772			(15,831	)		(8,059	)		11,579			7,592			19,171			11,362			(3,798	)		7,564
Net income (loss)	$	6,859		$	(5,484	)	$	1,375		$	(10,304	)	$	17,469		$	7,165		$	(25,988	)	$	(4,461	)	$	(30,449	)	$	(29,433	)	$	7,524		$	(21,909	)
Net income (loss) per share:
Basic	$	0.14		$	(0.11	)	$	0.03		$	(0.22	)	$	0.37		$	0.15		$	(0.56	)	$	(0.10	)	$	(0.66	)	$	(0.63	)	$	0.16		$	(0.47	)
Diluted	$	0.14		$	(0.11	)	$	0.03		$	(0.22	)	$	0.37		$	0.15		$	(0.56	)	$	(0.10	)	$	(0.66	)	$	(0.63	)	$	0.16		$	(0.47	)
Weighted average shares outstanding:
Basic		46,372			—			46,372			46,426			—			46,426			46,443			—			46,443			46,414			—			46,414
Diluted		46,372			—			46,372			46,426			—			46,426			46,443			—			46,443			46,414			—			46,414

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(Unaudited)

	Three Months Ended March 31, 2012									Three Months Ended June 30, 2012
	As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated
	(In thousands, except per share amounts)
Net loss	$	6,859		$	(5,484	)	$	1,375		$	(10,304	)	$	17,469		$	7,165
Reclassified to earnings, net of provision for (benefit from) income taxes of $—, $161, $161, and $—, $—, $—		—			(298	)		(298	)		—			—			—
Unrealized hedging gains, net of provision for (benefit from) income taxes of $3,578, ($3,578), $— and ($12,087), $12,087, $—		(6,645	)		6,645			—			22,448			(22,448	)		—
Net change in unrealized gains and losses on marketable securities, net of benefit from (provision for) income taxes of $6,793, $—, $6,793, and $682, $—, $682		(12,612	)		—			(12,612	)		(1,268	)		—			(1,268	)
Other comprehensive income (loss)		(19,257	)		6,347			(12,910	)		21,180			(22,448	)		(1,268	)
Comprehensive income (loss)	$	(12,398	)	$	863		$	(11,535	)	$	10,876		$	(4,979	)	$	5,897

	Three Months Ended September 30, 2012									Nine Months Ended September 30, 2012
	As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated
	(In thousands, except per share amounts)
Net loss	$	(25,988	)	$	(4,461	)	$	(30,449	)	$	(29,433	)	$	7,524		$	(21,909	)
Reclassified to earnings, net of provision for (benefit from) income taxes of $—,$—, $— and $—, $161, $161		—			—			—			—			(298	)		(298	)
Unrealized hedging gains, net of provision for (benefit from) income taxes of $3,889, ($3,889), $— and ($4,620), $4,620, $—		(7,223	)		7,223			—			8,580			(8,580	)		—
Net change in unrealized gains and losses on marketable securities, net of benefit from (provision for) income taxes of $46, $—, $46 and $7,520, $—,$7,520		(86	)		—			(86	)		(13,966	)		—			(13,966	)
Other comprehensive income (loss)		(7,309	)		7,223			(86	)		(5,386	)		(8,878	)		(14,264	)
Comprehensive income (loss)	$	(33,297	)	$	2,762		$	(30,535	)	$	(34,819	)	$	(1,354	)	$	(36,173	)

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

	Three Months Ended March  31, 2012							Six Months Ended June 30, 2012							Nine Months  Ended September 30, 2012
	As Reported		Adjustments			As Restated		As Reported		Adjustments			As Restated		As Reported		Adjustments			As Restated
	(In thousands)
ASSETS
Cash and Cash Equivalents	$	3,750	$	—		$	3,750	$	3,505	$	—		$	3,505	$	2,569	$	—		$	2,569
Restricted Cash		9,549		—			9,549		—		—			—		—		—			—
Accounts Receivable		51,918		—			51,918		42,122		(1,235	)		40,887		51,907		(2,176	)		49,731
Marketable Securities		17,154		—			17,154		15,204		—			15,204		15,072		—			15,072
Assets Held for Sale		91,520		—			91,520		—		—			—		—		—			—
Derivative Financial Instruments		—		—			—		18,536		—			18,536		10,823		—			10,823
Other Current Assets		2,908		—			2,908		6,695		—			6,695		7,658		—			7,658
Total Current Assets		176,799		—			176,799		86,062		(1,235	)		84,827		88,029		(2,176	)		85,853
Net Property and Equipment		2,517,672		—			2,517,672		2,547,219		—			2,547,219		2,546,024		—			2,546,024
Derivative Financial Instruments		—		—			—		6,235		—			6,235		2,836		—			2,836
Other Assets		16,201		—			16,201		21,796		—			21,796		20,950		—			20,950
	$	2,710,672	$	—		$	2,710,672	$	2,661,312	$	(1,235	)	$	2,660,077	$	2,657,839	$	(2,176	)	$	2,655,663
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current Liabilities	$	250,060	$	—		$	250,060	$	176,726		—		$	176,726		200,086	$	—		$	200,086
Long-term Debt		1,207,042		—			1,207,042		1,223,235		—			1,223,235		1,238,809		—			1,238,809
Deferred Income Taxes Payable		208,078		(863	)		207,215		203,530		2,881			206,411		190,784		(822	)		189,962
Reserve for Future Abandonment Costs		13,536		—			13,536		14,191		—			14,191		14,545		—			14,545
Derivative Financial Instruments		2,205		—			2,205		—		—			—		—		—			—
Other Non-Current Liabilities		2,394		—			2,394		2,337		—			2,337		2,301		—			2,301
Total Liabilities		1,683,315		(863	)		1,682,452		1,620,019		2,881			1,622,900		1,646,525		(822	)		1,645,703
Commitments and Contingencies
Stockholders’ Equity:
Common stock		24,058		—			24,058		24,081		—			24,081		24,081		—			24,081
Additional Paid-in Capital		470,844		—			470,844		473,881		—			473,881		477,199		—			477,199
Retained Earnings		531,236		(5,484	)		525,752		520,932		11,985			532,917		494,944		7,524			502,468
Accumulated Other Comprehensive Income		1,219		6,347			7,566		22,399		(16,101	)		6,298		15,090		(8,878	)		6,212
Total Stockholders’ Equity		1,027,357		863			1,028,220		1,041,293		(4,116	)		1,037,177		1,011,314		(1,354	)		1,009,960
	$	2,710,672	$	—		$	2,710,672	$	2,661,312	$	(1,235	)	$	2,660,077	$	2,657,839	$	(2,176	)	$	2,655,663

CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY

(Unaudited)

	Common Shares		Common Stock-Par Value		Additional Paid-in Capital			Retained Earnings			Accumulated Other Comprehensive Income			Total
	(In thousands)
Balance at December 31, 2011		48,125	$	24,063	$	468,709		$	524,377		$	20,476		$	1,037,625
Stock-based compensation		37		18		10,171			—			—			10,189
Excess income taxes from stock-based compensation		—		—		(1,681	)		—			—			(1,681	)
Net loss – as restated		—		—		—			(21,909	)		—			(21,909	)
Other comprehensive loss – as restated		—		—		—			—			(14,264	)		(14,264	)
Balance at September 30, 2012 – as restated		48,162	$	24,081	$	477,199		$	502,468		$	6,212		$	1,009,960

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

	Three Months Ended March  31, 2012									Six Months Ended June  30, 2012									Nine Months  Ended September 30, 2012
	As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated			As Reported			Adjustments			As Restated
	(In thousands)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income ( loss)	$	6,859		$	(5,484	)	$	1,375		$	(3,445	)	$	11,985		$	8,540		$	(29,433	)	$	7,524		$	(21,909	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Gain on sale of assets		(33,348	)		—			(33,348	)		(53,686	)		—			(53,686	)		(50,892	)		—			(50,892	)
Deferred income taxes		8,072			(4,441	)		3,631			416			11,390			11,806			(11,151	)		3,798			(7,353	)
Dry hole costs and leasehold impairments		1,315			—			1,315			1,315			—			1,315			2,685			—			2,685
Impairment of oil and gas properties		49			—			49			5,350			—			5,350			5,350			—			5,350
Depreciation, depletion and amortization		79,097			—			79,097			169,180			—			169,180			268,410			—			268,410
Unrealized gains from derivatives		262			9,925			10,187			—			(24,610	)		(24,610	)		—			(13,498	)		(13,498	)
Debt issuance cost and discount amortization		944			—			944			2,103			—			2,103			3,689			—			3,689
Stock-based compensation		3,535			—			3,535			6,860			—			6,860			10,189			—			10,189
Excess income taxes from stock-based compensation		1,405			—			1,405			1,670			—			1,670			1,681			—			1,681
Decrease in accounts receivable		1,815			—			1,815			11,611			1,235			12,846			1,826			2,176			4,002
Increase in other current assets		(199	)		—			(199	)		(4,097	)		—			(4,097	)		(5,059	)		—			(5,059	)
Increase in accounts payable and accrued expenses		63,374			—			63,374			4,621			—			4,621			28,403			—			28,403
Net cash provided by operating activities		133,180			—			133,180			141,898			—			141,898			225,698			—			225,698
CASH FLOWS FROM INVESTING ACTIVITIES:
Net cash used for investing activities		(146,423	)		—			(146,423	)		(164,560	)		—			(164,560	)		(264,119	)		—			(264,119	)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net cash provided by financing activities		8,533			—			8,533			17,707			—			17,707			32,530			—			32,530
Net decrease in cash and cash equivalents		(4,710	)		—			(4,710	)		(4,955	)		—			(4,955	)		(5,891	)		—			(5,891	)
Cash and cash equivalents, beginning of the year		8,460			—			8,460			8,460			—			8,460			8,460			—			8,460
Cash and cash equivalents, end of the year	$	3,750		$	—		$	3,750		$	3,505		$	—		$	3,505		$	2,569		$	—		$	2,569

 3

XML

Oil and Gas Reserves Information (Unaudited) - Changes in Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Reserves (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reserve Quantities [Line Items]
Standardized Measure, Beginning of Year	$ 1,113,495	$ 606,136	$ 426,590
Net change in sales price, net of production costs	(428,469)	1,061	141,570
Development costs incurred during the year which were previously estimated	211,020	205,418	69,216
Revisions of quantity estimates	(892,645)	(50,398)	(5,433)
Accretion of discount	148,697	79,763	48,911
Changes in future development and abandonment costs	653,824	10,151	(15,201)
Changes in timing and other	(16,176)	(58,049)	66,657
Extensions and discoveries	467,080	540,937	321,909
Purchases of minerals in place		316,118
Sales of minerals in place	(261,971)		(50,651)
Sales, net of production costs	(341,803)	(355,654)	(268,466)
Net changes in income taxes	131,165	(181,988)	(128,966)
Standardized Measure, End of Year	$ 784,217	$ 1,113,495	$ 606,136

XML

Stock-based Compensation

12 Months Ended

Dec. 31, 2012

Stock-based Compensation

(7)    Stock-based Compensation

The Company grants restricted shares of common stock, stock options and performance share units to key employees and directors as part of their compensation under the 2009 Long-term Incentive Plan. Future awards of stock options, restricted stock grants or other equity awards under the 2009 Long-term Incentive Plan are available with up to 1,607,372 shares of common stock.

During 2010, 2011 and 2012, the Company had $17.4 million, $15.0 million and $13.7 million, respectively, in stock-based compensation expense which is in general and administrative expenses. The excess income tax benefit realized from tax deductions associated with stock-based compensation recognized in additional paid in capital totaled $1.5 million in 2010 and excess tax provisions from tax deductions associated with stock-based compensation of $0.6 million and $1.7 million were recognized in additional paid in capital for the years ended December 31, 2011 and 2012, respectively.

Stock Options

The Company amortizes the fair value of stock options granted over the vesting period using the straight-line method. Compensation expense recognized for outstanding stock options was $0.4 million for the year ended December 31, 2010.

The Company has not issued any stock options since 2008. The following table summarizes information related to stock options outstanding at December 31, 2012:

Exercise Price	Weighted Average Remaining  Life (in years)		Number of Options Outstanding		Number of Options Exercisable
$32.50		2.9		51,500		51,500
$33.22		4.0		65,650		65,650
$54.36		0.4		40,000		40,000
				157,150		157,150

The following table summarizes information related to stock option activity under the Company’s incentive plans for the year ended December 31, 2012:

	Number of Options			Weighted Average Exercise  Price
Outstanding at January 1, 2012		203,150		$	36.64
Expired and forfeited		(46,000	)	$	30.74
Outstanding at December 31, 2012		157,150		$	38.36
Vested and Exercisable at December 31, 2012		157,150		$	38.36

	2010		2011		2012
	(In thousands)
Cash received for options exercised	$	1,427	$	—	$	—
Actual tax benefit realized	$	4,221	$	—	$	—

As of December 31, 2012, all compensation cost related to stock options had been recognized. Stock options outstanding at December 31, 2011 and 2012 had no intrinsic value based on the closing price for the Company’s common stock on December 31, 2011 and December 31, 2012. There were no stock option exercises in 2011 or 2012.

Restricted Stock

The fair value of restricted stock grants is amortized over the vesting period, generally one to four years, using the straight-line method. Total compensation expense recognized for restricted stock grants was $17.0 million, $15.0 million and $13.5 million for the years ended December 31, 2010, 2011 and 2012, respectively. The fair value of each restricted share on the date of grant is equal to its fair market price. A summary of restricted stock activity for the year ended December 31, 2012 is presented below:

	Number of Restricted Shares			Weighted Average Grant Price
Outstanding at January 1, 2012		2,114,520		$	31.25
Granted		303,530		$	15.49
Vested		(437,123	)	$	35.07
Forfeitures		(20,092	)	$	26.10
Outstanding at December 31, 2012		1,960,835		$	28.01

The per share weighted average fair value of restricted stock grants in 2010, 2011 and 2012 was $25.61, $18.31 and $15.49, respectively. Total unrecognized compensation cost related to unvested restricted stock of $19.1 million as of December 31, 2012 is expected to be recognized over a period of 2.3 years. The fair value of restricted stock which vested in 2010, 2011 and 2012 was $15.1 million, $9.3 million and $6.7 million, respectively.

Performance Share Units

The Company issues PSUs as part of its long-term equity incentive compensation. PSU awards can result in the issuance of common stock to the holder if certain performance criteria is met during a performance period. The performance periods consist of one year, two years and three years, respectively. The performance criteria for the PSUs are based on the Company’s annualized total stockholder return (“TSR”) for the performance period as compared with the TSR of certain peer companies for the performance period. The costs associated with PSUs are recognized as general and administrative expense over the performance periods of the awards.

The fair value of PSUs was measured at the grant date using a stochastic process method utilizing the Geometric Brownian Motion Model (“GBM Model”). A stochastic process is a mathematically defined equation that can create a series of outcomes over time. These outcomes are not deterministic in nature, which means that by iterating the equations multiple times, different results will be obtained for those iterations. In the case of the Company’s PSUs, the Company cannot predict with certainty the path its stock price or the stock prices of its peers will take over the future performance periods. By using a stochastic simulation, the Company can create multiple prospective total return pathways, statistically analyze these simulations, and ultimately make inferences to the most likely path the total return will take. As such, because future stock returns are stochastic, or probabilistic with some direction in nature, the stochastic method, specifically the GBM Model, is deemed an appropriate method by which to determine the fair value of the PSUs. Significant assumptions used in this simulation include the Company’s expected volatility and a risk-free interest rate based on U.S. Treasury yield curve rates with maturities consistent with the vesting periods, as well as the volatilities for each of the Company’s peers. For the PSUs granted in 2012, the valuation inputs included a risk-free interest rate of 0.4% and a range of volatilities of 29% to 70%.

The Company granted 254,133 PSUs in 2012, all of which were outstanding at December 31, 2012, with a grant date fair value of $5.4 million, or $21.14 per unit. The number of awards assumes a one multiplier. The final number of shares of common stock issued may vary depending upon the performance multiplier, and can result in the issuance of zero to 688,545 shares of common stock based on the achieved performance ranges from zero to three.

Total compensation expense for PSUs was $0.2 million for the year ended December 31, 2012. As of December 31, 2012, there was $5.2 million of total unrecognized expense related to PSUs, which is being amortized through December 2015.

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Stock-based Compensation - Stock Option Activity under Company's Incentive Plans (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012
Stock Option Activity Under The Company's Incentive Plans [Line Items]
Beginning Balance, Outstanding, Number of Options	203,150
Number of options, Expired and forfeited	(46,000)
Ending Balance, Outstanding, Number of options	157,150
Ending Balance, Vested and Exercisable, Number of Options	157,150
Beginning of Period, Outstanding, Weighted Average Exercise Price	$ 36.64
Weighted Average Exercise Price, Expired and forfeited	$ 30.74
Ending of Period, Outstanding, Weighted Average Exercise Price	$ 38.36
Ending Balance, Vested and Exercisable, Weighted Average Exercise Price	$ 38.36

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies

(5)    Commitments and Contingencies

Commitments

The Company rents office space and other facilities under noncancelable operating leases. Rent expense for the years ended December 31, 2010, 2011 and 2012 was $1.3 million, $1.1 million and $1.4 million, respectively. Minimum future payments under the leases are as follows:

	(In thousands)
2013	$	1,983
2014		2,012
2015		2,038
2016		1,994
2017		2,021
Thereafter		6,740
	$	16,788

As of December 31, 2012, the Company had commitments for contracted drilling rigs of $65.3 million through November 2015.

The Company has entered into natural gas transportation agreements through July 2019. Maximum commitments under these transportation agreements as of December 31, 2012 totaled $25.3 million.

Contingencies

From time to time, the Company is involved in certain litigation that arises in the normal course of its operations. The Company records a loss contingency for these matters when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. The Company does not believe the resolution of these matters will have a material effect on the Company’s financial position or results of operations and no material amounts are accrued relative to these matters at December 31, 2011 or 2012.

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Stockholders' Equity

12 Months Ended

Dec. 31, 2012

Stockholders' Equity

(6)    Stockholders’ Equity

The authorized capital stock of Comstock consists of 75 million shares of common stock, $.50 par value per share, and 5 million shares of preferred stock, $10.00 par value per share. The preferred stock may be issued in one or more series, and the terms and rights of such stock will be determined by the Board of Directors. There were no shares of preferred stock outstanding at December 31, 2011 or 2012.

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Retirement Plan

12 Months Ended

Dec. 31, 2012

Retirement Plan

(8)   Retirement Plan

The Company has a 401(k) profit sharing plan which covers all of its employees. At its discretion, Comstock may match a certain percentage of the employees’ contributions to the plan. Matching contributions to the plan were $341,000, $323,000 and $365,000 for the years ended December 31, 2010, 2011 and 2012, respectively.

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Income Taxes - Income Tax Benefit (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Benefit [Line Items]
Current	$ (162)	$ 28	$ (229)
Deferred	(47,192)	(14,652)	(4,617)
Benefit from income taxes	$ (47,354)	$ (14,624)	$ (4,846)

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Income Taxes - Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Line Items]
Tax benefit at statutory rate	$ (51,595)	$ (16,834)	$ (8,551)
Tax effect of:
Nondeductible compensation	2,545	2,753	4,253
State taxes, net of federal tax benefit	1,486	(741)	(343)
Net operating loss carryback adjustments			(369)
Other	210	198	164
Total	$ (47,354)	$ (14,624)	$ (4,846)

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Retirement Plan - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Retirement Plan [Line Items]
Matching contributions to the plan	$ 365,000	$ 323,000	$ 341,000

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Summary of Significant Accounting Policies - Summary of Financial Assets at Fair Value (Detail) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Assets measured at fair value on a recurring basis:
Cash held in bank accounts	$ 4,471
Marketable securities	12,312
Derivative financial instruments	11,651
Total assets	28,434
Level 1 [Member]
Assets measured at fair value on a recurring basis:
Cash held in bank accounts	4,471
Marketable securities	12,312
Total assets	16,783
Level 2 [Member]
Assets measured at fair value on a recurring basis:
Derivative financial instruments	11,651
Total assets	$ 11,651

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Long-term Debt - Long-term Debt (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Long-term debt	$ 1,324,383	$ 1,196,908
Bank credit facility [Member]
Debt Instrument [Line Items]
Long-term debt	440,000	600,000
8 3/8% senior notes due 2017 [Member]
Debt Instrument [Line Items]
Long-term debt	300,000	300,000
Discount related to 8 3/8% senior notes due 2017 [Member]
Debt Instrument [Line Items]
Long-term debt	(2,556)	(3,092)
7 3/4% senior notes due 2019 [Member]
Debt Instrument [Line Items]
Long-term debt	300,000	300,000
9 1/2% senior notes due 2020 [Member]
Debt Instrument [Line Items]
Long-term debt	300,000
Discount related to 9 1/2% senior notes due 2020 [Member]
Debt Instrument [Line Items]
Long-term debt	$ (13,061)

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2012

Basis of Presentation and Principles of Consolidation

Basis of Presentation and Principles of Consolidation

Comstock Resources, Inc. is engaged in oil and natural gas exploration, development and production, and the acquisition of producing oil and natural gas properties. The Company’s operations are primarily focused in Texas and Louisiana. The consolidated financial statements include the accounts of Comstock Resources, Inc. and its wholly owned or controlled subsidiaries (collectively, “Comstock” or the “Company”). During 2011 and 2012 the consolidated financial statements also include the accounts of a variable interest entity where the Company was the primary beneficiary of the arrangements. All significant intercompany accounts and transactions have been eliminated in consolidation. The Company accounts for its undivided interest in oil and gas properties using the proportionate consolidation method, whereby its share of assets, liabilities, revenues and expenses are included in its financial statements.

Reclassifications

Reclassifications

Certain reclassifications have been made to prior periods’ financial statements to conform to the current presentation.

Use of Estimates in the Preparation of Financial Statements

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual amounts could differ from those estimates. Changes in the future estimated oil and natural gas reserves or the estimated future cash flows attributable to the reserves that are utilized for impairment analysis could have a significant impact on the future results of operations.

Concentration of Credit Risk and Accounts Receivable

Concentration of Credit Risk and Accounts Receivable

Financial instruments that potentially subject the Company to a concentration of credit risk consist principally of cash and cash equivalents, accounts receivable and derivative financial instruments. The Company places its cash with high credit quality financial institutions and its derivative financial instruments with financial institutions and other firms that management believes have high credit ratings. Substantially all of the Company’s accounts receivable are due from either purchasers of oil and gas or participants in oil and gas wells for which the Company serves as the operator. Generally, operators of oil and gas wells have the right to offset future revenues against unpaid charges related to operated wells. Oil and gas sales are generally unsecured. The Company’s policy is to assess the collectability of its receivables based upon their age, the credit quality of the purchaser or participant and the potential for revenue offset. The Company has not had any significant credit losses in the past and believes its accounts receivable are fully collectible. Accordingly, no allowance for doubtful accounts has been provided.

Marketable Securities

Marketable Securities

As of December 31, 2011 and 2012, the Company owned 1,806,000 and 600,000 shares, respectively, of Stone Energy Corporation common stock which was reflected in the consolidated balance sheets as marketable securities. As of December 31, 2011 and 2012, the cost basis of the marketable securities was $16.6 million and $5.5 million, respectively. As of December 31, 2011 and 2012, the estimated fair value of the marketable securities was $47.6 million and $12.3 million, respectively, after recognizing unrealized gain after income taxes of $20.2 million and $4.4 million, respectively. The Company does not exert influence over the operating and financial policies of Stone, and has classified its investment in these shares as an available-for-sale security in the consolidated balance sheets. Available-for-sale securities are accounted for at fair value, with any unrealized gains and unrealized losses not determined to be other than temporary reported in the consolidated balance sheet within accumulated other comprehensive income as a separate component of stockholders’ equity. The Company utilizes the specific identification method to determine the cost of any securities sold. During 2010, 2011 and 2012 the Company sold 1,520,000, 1,991,000 and 1,206,000 shares of Stone common stock for proceeds of $30.5 million, $53.4 million and $37.7 million, respectively. Comstock realized gains before income taxes of $16.5 million, $35.1 million and $26.6 million on these sales during 2010, 2011 and 2012, respectively. The Company reviews its available-for-sale securities to determine whether a decline in fair value below the respective cost basis is other than temporary. Unrealized losses are charged against net earnings when a decline in fair value is determined to be other than temporary.

Other Current Assets

Other Current Assets

Other current assets at December 31, 2011 and 2012 consist of the following:

	As of December 31,
	2011		2012
	(In thousands)
Pipe and oil field equipment inventory	$	2,314	$	1,922
Production tax refunds receivable		—		1,830
Derivative settlements receivable		—		1,693
Drilling advances		—		1,160
Prepaid expenses		397		300
Other		85		49
	$	2,796	$	6,954

Fair Value Measurements

Fair Value Measurements

The Company holds or has held certain items that are required to be measured at fair value. These include cash equivalents held in bank accounts, marketable securities and derivative financial instruments in the form of oil price swap agreements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. A three-level hierarchy is followed for disclosure to show the extent and level of judgment used to estimate fair value measurements:

Level 1 – Inputs used to measure fair value are unadjusted quoted prices that are available in active markets for the identical assets or liabilities as of the reporting date.

Level 2 – Inputs used to measure fair value, other than quoted prices included in Level 1, are either directly or indirectly observable as of the reporting date through correlation with market data, including quoted prices for similar assets and liabilities in active markets and quoted prices in markets that are not active. Level 2 also includes assets and liabilities that are valued using models or other pricing methodologies that do not require significant judgment since the input assumptions used in the models, such as interest rates and volatility factors, are corroborated by readily observable data from actively quoted markets for substantially the full term of the financial instrument.

Level 3 – Inputs used to measure fair value are unobservable inputs that are supported by little or no market activity and reflect the use of significant management judgment. These values are generally determined using pricing models for which the assumptions utilize management’s estimates of market participant assumptions.

The Company’s cash and marketable securities valuation are based on Level 1 measurements. The Company’s oil and natural gas price swap agreements were not traded on a public exchange, and their value was determined utilizing a discounted cash flow model based on inputs that are readily available in public markets and, accordingly, the valuation of these swap agreements was categorized as a Level 2 measurement.

The following table summarizes financial assets accounted for at fair value as of December 31, 2012:

	Carrying Value Measured at Fair Value at December 31, 2012		Level 1		Level 2
	(In thousands)
Assets measured at fair value on a recurring basis:
Cash held in bank accounts	$	4,471	$	4,471	$	—
Marketable securities		12,312		12,312		—
Derivative financial instruments		11,651		—		11,651
Total assets	$	28,434	$	16,783	$	11,651

As of December 31, 2012 the Company had oil price swap agreements for 2,160,000 barrels of oil to be produced in 2013 with a fair value of $11.7 million. The Company has recognized an asset for this amount, and has recognized corresponding unrealized gain which is included in other income (expenses) during 2012. At December 31, 2011 the Company had oil price swap agreements for 1,440,000 barrels of oil to be produced in 2012 with a fair value of $0.5 million. The Company recognized a current asset for this amount, and recognized an unrealized gain of $0.3 million, net of income taxes of $0.2 million, which was included in other comprehensive income.

The following table summarizes the changes in the fair values of derivative financial instruments, which are Level 2 liabilities, for the years ended December 31, 2010, 2011 and 2012:

	2010		2011		2012
	(In thousands)
Balance beginning of period	$	—	$	—	$	459
Purchases and settlements (net)		—		—		(9,766)
Total realized or unrealized gains:
Realized gains included in earnings		—		—		9,766
Unrealized gains included in earnings		—		—		11,651
Unrealized gains included in other comprehensive income		—		459		(459)
Balance end of period	$	—	$	459	$	11,651

The following table presents the carrying amounts and estimated fair value of the Company’s other financial instruments as of December 31, 2011 and 2012:

	2011				2012
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(In thousands)
Long-term debt, including current portion	$	1,196,908	$	1,167,000	$	1,324,383	$	1,382,000

The fair market value of the Company’s fixed rate debt was based on the market prices as of December 31, 2011 and 2012, a Level 1 measurement. The fair value of the floating rate debt outstanding at December 31, 2011 and 2012 approximated its carrying value, a Level 2 measurement.

Property and Equipment

Property and Equipment

The Company follows the successful efforts method of accounting for its oil and gas properties. Acquisition costs for proved oil and gas properties, costs of drilling and equipping productive wells, and costs of unsuccessful development wells are capitalized and amortized on an equivalent unit-of-production basis over the life of the remaining related oil and gas reserves. Equivalent units are determined by converting oil to natural gas at the ratio of one barrel of oil for six thousand cubic feet of natural gas. This conversion ratio is not based on the price of oil or natural gas, and there may be a significant difference in price between an equivalent volume of oil versus natural gas. Cost centers for amortization purposes are determined on a field area basis. Costs incurred to acquire oil and gas leasehold are capitalized. The estimated future costs of dismantlement, restoration, plugging and abandonment of oil and gas properties and related facilities disposal are capitalized when asset retirement obligations are incurred and amortized as part of depreciation, depletion and amortization expense. The costs of unproved properties which are determined to be productive are transferred to proved oil and gas properties and amortized on an equivalent unit-of-production basis. Exploratory expenses, including geological and geophysical expenses and delay rentals for unevaluated oil and gas properties, are charged to expense as incurred. Unproved oil and gas properties are periodically assessed for impairment on a property by property basis, and any impairment in value is charged to exploration expense. During 2011 and 2012, impairment charges of $9.8 million and $61.3 million, respectively, were recognized in exploration expense related to certain leases that the Company no longer expects to drill on. Exploratory drilling costs are initially capitalized as unproved property but charged to expense if and when the well is determined not to have found commercial quantities of proved oil and gas reserves. Exploratory drilling costs are evaluated within a one-year period after the completion of drilling.

The Company periodically assesses the need for an impairment of the costs capitalized for its oil and gas properties on a property or cost center basis. If impairment is indicated based on undiscounted expected future cash flows attributable to the property, then a provision for impairment is recognized to the extent that net capitalized costs exceed the estimated fair value of the property. The fair value is based upon estimated discounted future cash flows which are derived from Level 3 inputs. Expected future cash flows are determined using estimated future prices based on market based forward prices applied to projected future production volumes. Costs are also projected to escalate at a rate that is based upon the Company’s historical experience. The projected production volumes are based on the property’s proved and risk adjusted probable oil and natural gas reserve estimates at the end of the period. The oil and natural gas prices used for determining asset impairments will generally differ from those used in the standardized measure of discounted future net cash flows because the standardized measure requires the use of an average price based on the first day of each month of the preceding year and is limited to proved reserves. The Company recognized impairment charges related to its oil and gas properties of $0.2 million, $60.8 million and $25.4 million in 2010, 2011, and 2012, respectively.

Other property and equipment consists primarily of gas gathering systems, computer equipment, furniture and fixtures and an airplane which are depreciated over estimated useful lives ranging from three to 31 ¹/₂ years on a straight-line basis.

Accrued Expenses

Accrued Expenses

Accrued expenses at December 31, 2011 and 2012 consist of the following:

	As of December 31,
	2011		2012
	(In thousands)
Accrued drilling costs	$	29,291	$	14,050
Accrued interest payable		11,113		12,351
Advance from joint venture partner		—		7,286
Accrued oil and gas property acquisition costs		31,988		2,413
Other		13,110		11,272
	$	85,502	$	47,372

Reserve for Future Abandonment Costs

Reserve for Future Abandonment Costs

The Company’s asset retirement obligations relate to future plugging and abandonment costs of its oil and gas properties and related facilities disposal. The Company records a liability in the period in which an asset retirement obligation is incurred, in an amount equal to the discounted estimated fair value of the obligation that is capitalized. Thereafter, this liability is accreted up to the final retirement cost. Accretion of the discount is included as part of depreciation, depletion and amortization in the accompanying consolidated financial statements.

The following table summarizes the changes in the Company’s total estimated liability:

	2010		2011		2012
	(In thousands)
Reserve for Future Abandonment Costs at beginning of the year	$	6,561	$	6,674	$	13,997
New wells placed on production		338		417		1,837
Changes in estimates		596		5,839		2,736
Acquisition liabilities assumed		—		741		—
Liabilities settled and assets disposed of		(1,212)		(56)		(1,304)
Accretion expense		391		382		728
Reserve for Future Abandonment Costs at end of the year	$	6,674	$	13,997	$	17,994

Other Assets

Other Assets

Other assets primarily consist of deferred costs associated with issuance of the Company’s senior notes and bank credit facility. These costs are amortized over the life of the senior notes and the life of the bank credit facility on a straight-line basis which approximates the amortization that would be calculated using an effective interest rate method.

Stock-based Compensation

Stock-based Compensation

The Company has stock-based employee compensation plans under which stock awards, comprised of restricted stock, stock options and performance share units are issued to employees and non-employee directors. The Company follows the fair value based method in accounting for equity-based compensation. Under the fair value based method, compensation cost is measured at the grant date based on the fair value of the award and is recognized on a straight-line basis over the award vesting period. Excess tax benefits on stock-based compensation are recognized as an adjustment to additional paid-in capital and as a part of cash flows from financing activities.

Segment Reporting

Segment Reporting

The Company presently operates in one business segment, the exploration and production of oil and natural gas.

Derivative Instruments and Hedging Activities

Derivative Instruments and Hedging Activities

The Company accounts for derivative instruments (including certain derivative instruments embedded in other contracts) as either an asset or liability measured at its fair value. Changes in the fair value of derivatives are recognized currently in earnings unless specific hedge accounting criteria are met. The Company estimates fair value based on a discounted cash flow model and quotes obtained from the counterparties to the derivative contract. The fair value of derivative contracts that expire in less than one year are recognized as current assets or liabilities. Those that expire in more than one year are recognized as long-term assets or liabilities. Derivative financial instruments that are not accounted for as hedges are adjusted to fair value through income. If the derivative is designated as a cash flow hedge, changes in fair value are recognized in other comprehensive income until the hedged item is recognized in earnings.

Major Purchasers

Major Purchasers

In 2012 the Company had two purchasers of its oil and natural gas production that accounted for 42% and 27%, respectively, of total oil and gas sales. In 2011 the Company had two purchasers of its oil and natural gas production that accounted for 49% and 14%, respectively, of total oil and gas sales. In 2010 the Company had one purchaser of its oil and natural gas production that accounted for 39% of total oil and gas sales. The loss of any of these customers would not have a material adverse effect on the Company as there is an available market for its oil and natural gas production from other purchasers.

Revenue Recognition and Gas Balancing

Revenue Recognition and Gas Balancing

Comstock utilizes the sales method of accounting for oil and natural gas revenues whereby revenues are recognized at the time of delivery based on the amount of oil or natural gas sold to purchasers. Revenue is typically recorded in the month of production based on an estimate of the Company’s share of volumes produced and prices realized. Revisions to such estimates are recorded as actual results are known. The amount of oil or natural gas sold may differ from the amount to which the Company is entitled based on its revenue interests in the properties. The Company did not have any significant imbalance positions at December 31, 2011 or 2012. Sales of oil and natural gas generally occur at the wellhead. When sales of oil and gas occur at locations other than the wellhead, the Company accounts for costs incurred to transport the production to the delivery point as operating expenses.

General and Administrative Expenses

General and Administrative Expenses

General and administrative expenses are reported net of reimbursements of overhead costs that are received from working interest owners of the oil and gas properties operated by the Company of $10.6 million, $10.5 million and $11.5 million in 2010, 2011 and 2012, respectively.

Income Taxes

Income Taxes

The Company accounts for income taxes using the asset and liability method, whereby deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of assets and liabilities and their respective tax basis, as well as the future tax consequences attributable to the future utilization of existing tax net operating loss and other types of carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences and carryforwards are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that the change in rate is enacted.

Earnings Per Share

Earnings Per Share

Basic earnings per share is determined without the effect of any outstanding potentially dilutive stock options and diluted earnings per share is determined with the effect of outstanding stock options that are potentially dilutive. Unvested share-based payment awards containing nonforfeitable rights to dividends are considered to be participatory securities and included in the computation of basic and diluted earnings per share pursuant to the two-class method. Performance share units (“PSUs”) represent the right to receive a number of shares of the Company’s common stock that may range from zero to up to three times the number of PSUs granted on the award date based on the achievement of certain performance measures during a performance period. The number of potentially dilutive shares related to PSUs is based on the number of shares, if any, which would be issuable at the end of the respective period, assuming that date was the end of the contingency period. The treasury stock method is used to measure the dilutive effect of PSUs.

Basic and diluted earnings per share for 2010, 2011 and 2012 were determined as follows:

	2010								2011								2012
	Loss			Shares		Per Share			Loss			Shares		Per Share			Loss			Shares		Per Share
	(In thousands except per share data)
Net Loss	$	(19,586	)						$	(33,472	)						$	(100,060	)
Income Allocable to Unvested Stock Grants		—								—								—
Basic Net Loss Attributable to Common Stock	$	(19,586	)		45,561	$	(0.43	)	$	(33,472	)		45,997	$	(0.73	)	$	(100,060	)		46,422	$	(2.16	)
Effect of Dilutive Securities:
Stock Options		—			—					—			—					—			—
Performance Stock Units		—			—					—			—					—			—
Diluted Net Loss Attributable to Common Stock	$	(19,586	)		45,561	$	(0.43	)	$	(33,472	)		45,997	$	(0.73	)	$	(100,060	)		46,422	$	(2.16	)

At December 31, 2010, 2011 and 2012, 2,069,275, 2,114,520 and 1,960,835 shares of unvested restricted stock, respectively, are included in common stock outstanding as such shares have a nonforfeitable right to participate in any dividends that might be declared and have the right to vote. Weighted average shares of unvested restricted stock included in common stock outstanding were as follows:

	2010		2011		2012
	(In thousands)
Unvested restricted stock		1,715		1,683		1,737

All stock options, unvested stock and PSUs were anti-dilutive to earnings and excluded from weighted average shares used in the computation of earnings per share due to the net loss in each period.

Options to purchase common stock that were outstanding and that were excluded as anti-dilutive from determination of diluted earnings per share were as follows:

	2010		2011		2012
	(In thousands except per share data)
Weighted average anti-dilutive stock options		240		215		168
Weighted average exercise price	$	35.98	$	36.42	$	37.81

Supplementary Information With Respect to the Consolidated Statements of Cash Flows

Supplementary Information With Respect to the Consolidated Statements of Cash Flows

For the purpose of the consolidated statements of cash flows, the Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.

Cash payments made for interest and income taxes for the years ended December 31, 2010, 2011 and 2012, respectively, were as follows:

	2010			2011			2012
	(In thousands)
Cash Payments:
Interest payments	$	40,467		$	49,109		$	79,001
Income tax refunds	$	(48,575	)	$	(1,403	)	$	(58	)

The Company capitalizes interest on its unevaluated oil and gas property costs during periods when it is conducting exploration activity on this acreage. The Company capitalized interest of $13.0 million, $13.2 million and $20.9 million in 2010, 2011 and 2012, respectively, which reduced interest expense and increased the carrying value of its unevaluated oil and gas properties.

Comprehensive Loss

Comprehensive Loss

Comprehensive loss consists of the following:

	For the Year Ended December 31,
	2010			2011			2012
	(In thousands)
Net Loss	$	(19,586	)	$	(33,472	)	$	(100,060	)
Other comprehensive income (loss):
Realized gains on marketable securities reclassified to earnings, net of provision for income taxes of ($5,785) in 2010, ($12,291) in 2011 and ($9,318) in 2012		(10,744	)		(22,827	)		(17,303	)
Unrealized hedging gains, net of provision for (benefit from) income taxes of $161 in 2011 and ($161) in 2012		—			298			(298	)
Unrealized gains on marketable securities, net of provision for income taxes of $6,707 in 2010, $5,748 in 2011 and $831 in 2012		12,455			10,675			1,543
Total comprehensive loss	$	(17,875	)	$	(45,326	)	$	(116,118	)

The following table provides a summary of the amounts included in accumulated other comprehensive income, net of income taxes, for the years ended December 31, 2010, 2011 and 2012:

	Oil Price Swap Agreements			Marketable Securities			Total Accumulated Comprehensive Income
	(In thousands)
Balance as of December 31, 2009	$	—		$	30,619		$	30,619
Reclassification to earnings		—			(10,744	)		(10,744	)
Changes in value		—			12,455			12,455
Balance as of December 31, 2010		—			32,330			32,330
Reclassification to earnings		—			(22,827	)		(22,827	)
Changes in value		298			10,675			10,973
Balance as of December 31, 2011		298			20,178			20,476
Reclassification to earnings		(298	)		(17,303	)		(17,601	)
Changes in value		—			1,543			1,543
Balance as of December 31, 2012	$	—		$	4,418		$	4,418

Subsequent Events

Subsequent Events

Subsequent events were evaluated through the issuance date of these consolidated financial statements.

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Minimum Future Payments under Leases

The Company rents office space and other facilities under noncancelable operating leases. Rent expense for the years ended December 31, 2010, 2011 and 2012 was $1.3 million, $1.1 million and $1.4 million, respectively. Minimum future payments under the leases are as follows:

	(In thousands)
2013	$	1,983
2014		2,012
2015		2,038
2016		1,994
2017		2,021
Thereafter		6,740
	$	16,788

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Oil and Gas Producing Activities - Capitalized Costs Related to Oil and Gas Property Acquisition Exploration and Development Activities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Capitalized Costs [Line Items]
Unproved properties	$ 263,652	$ 369,096
Proved properties:
Leasehold costs	1,125,460	1,162,094
Wells and related equipment and facilities	2,654,256	2,314,052
Accumulated depreciation depletion and amortization	(1,588,046)	(1,349,871)
Capitalized Costs, Oil and Gas Producing Activities, Net, Total	$ 2,455,322	$ 2,495,371

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Summary of Significant Accounting Policies - Common Stock Stock Options Excluded as Anti-Dilutive from Determination of Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average anti-dilutive stock options	168	215	240
Weighted average exercise price	$ 37.81	$ 36.42	$ 35.98

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $) In Thousands, unless otherwise specified	3 Months Ended					12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net loss	$ (78,151)	$ (41,134)	$ 1,309	$ 3,949	$ 2,404	$ (100,060)	$ (33,472)	$ (19,586)
Unrealized hedging gains, net of provision for (benefit from) income taxes of $-, $161 and $(161)						(298)	298
Net change in unrealized gains and losses on marketable securities, net of benefit from (provision for) income taxes of ($923) in 2010, $6,543 in 2011 and $8,487 in 2012						(15,760)	(12,152)	1,711
Other comprehensive income (loss)						(16,058)	(11,854)	1,711
Comprehensive loss						$ (116,118)	$ (45,326)	$ (17,875)

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Acquisitions and Dispositions of Oil and Gas Properties

12 Months Ended

Dec. 31, 2012

Acquisitions and Dispositions of Oil and Gas Properties

(2)    Acquisitions and Dispositions of Oil and Gas Properties

On December 29, 2011, the Company completed an acquisition, from an unrelated party, of oil and gas properties in the Delaware Basin located in Reeves County in West Texas (the “Delaware Basin Acquisition”). Total cash consideration paid of $337.9 million was funded with borrowings under the Company’s bank credit facility. The Company acquired proved oil and gas reserves of 25.2 million barrels of oil equivalent and leases covering 43,591 net acres. The effective date of the acquisition was November 1, 2011. Concurrent with the Delaware Basin Acquisition, Comstock entered into a transaction structured as a reverse like-kind exchange in accordance with Section 1031 of the Internal Revenue Code. In connection with this reverse like-kind exchange, Comstock assigned the right to acquire ownership in the oil and gas properties that were acquired to a variable interest entity formed by an exchange accommodation titleholder. Comstock operated these properties pursuant to lease and management agreements with that entity, and had a call option which allowed the Company to terminate the exchange transaction at any time up and until the expiration date of the exchange. The exchange transaction was completed in May 2012 and the variable interest entity was then merged into a wholly owned subsidiary of the Company. Because the Company was the primary beneficiary of these arrangements, the properties acquired are included in its consolidated balance sheet as of December 31, 2011, and all revenues earned and expenses incurred related to the properties were included in the Company’s consolidated results of operations during the term of the agreements.

The purchase price allocation, including final post-closing adjustments finalized during 2012, was as follows:

	(In thousands)
Consideration paid:
Cash	$	337,896
Total consideration paid	$	337,896

Amounts recognized for the fair value of assets acquired and liabilities assumed were as follows:

	(In thousands)
Proved properties	$	205,758
Unproved properties		143,751
Asset retirement obligation		(741	)
Liabilities assumed		(10,872	)
Net fair value of properties acquired and liabilities assumed	$	337,896

On December 30, 2011, the Company acquired oil and gas properties in North Louisiana from a third party for $27.1 million. This acquisition included proved oil and gas reserves of 13 billion cubic feet of natural gas equivalent and leases covering 3,500 net acres.

Comstock considered the property acquisitions as business combinations and estimated the fair value of the properties as of the acquisition date. To estimate the fair value of the properties, the Company used a net asset value approach. The Company utilized a discounted cash flow model that took into account the following inputs to arrive at estimates of future net cash flows:

• Estimated ultimate recovery of oil and natural gas;

• Estimated future commodity prices based on NYMEX oil and natural gas futures prices adjusted for estimated location and quality differentials as well as related transportation costs;

• Estimated future production rates; and

• Estimated timing and amounts of future operating and development costs.

To estimate the fair value of proved properties, the Company discounted the future net cash flows using a market-based rate that the Company determined appropriate at the acquisition date for the various proved reserve categories. Due to the unobservable nature of the inputs, the fair values of the proved and unproved oil and gas properties are considered Level 3 fair value measurements.

During 2012, the Company completed the sale of certain oil and gas properties located in Tyler and Polk counties in South Texas and Lincoln Parish in North Louisiana. The Company received aggregate net proceeds of $119.8 million and recognized a total gain of $26.0 million from these transactions. Also during 2012, the Company completed the sale of certain non-operated oil and gas properties acquired as part of the Delaware Basin Acquisition and received net proceeds of $24.8 million. The Company accounted for the disposal of these properties as a retirement since they represented a small portion of the assets within one of its major oil and gas properties.

On July 30, 2012, the Company entered into a participation agreement with Kohlberg Kravis Roberts & Co L.P. (together with its affiliates, “KKR”) providing for the participation of KKR in Comstock’s future development of its Eagle Ford shale properties in South Texas. Under the terms of the participation agreement, KKR has the right to participate for one-third of Comstock’s working interest in wells drilled on the Company’s 28,160 net acres in exchange for KKR paying $25,000 per acre for the net acreage being acquired and one-third of the wells costs. Each well that KKR participates in is intended to earn KKR approximately one-third of the Company’s working interest in approximately 80 acres. The agreement applies to wells spud by the Company on or subsequent to March 31, 2012. The Company retains all of its interest in wells that were spud prior to March 31, 2012. Subject to certain conditions, KKR is obligated to acquire acreage for the first 100 wells drilled on the Company’s Eagle Ford Shale acreage after July 30, 2012 and can continue to participate in additional wells drilled on the acreage under the same terms. Comstock received $23.8 million from KKR to fund its participation in drilling activity before the closing on July 30, 2012. During 2012 the Company also received $8.7 million for acreage and facility costs for new wells drilled subsequent to the closing. The Company accounted for the receipt of these funds as a retirement since they represented a small portion of the costs within one of its major oil and gas properties. Formation costs of $1.7 million incurred in connection with this joint venture are reflected as a reduction to the realized gain on sale of oil and gas properties in the consolidated financial statements.

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Stock-based Compensation - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized	$ 13.7	$ 15.0	$ 17.4
Income tax benefit realized from tax deductions associated with stock-based compensation			1.5
Income tax provision realized from tax deductions associated with stock-based compensation	1.7	0.6
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized	13.5	15.0	17.0
Grant date fair value of share units , per share	$ 15.49	$ 18.31	$ 25.61
Unrecognized compensation cost related to unvested restricted stock	19.1
Compensation cost expected to be recognized period	2 years 3 months 18 days
Fair value of restricted stock vested	6.7	9.3	15.1
2009 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term Incentive Plan provides for future awards of stock options, restricted stock grants or other equity awards	1,607,372
Performance Share Units (PSU) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value of share units , per share	$ 21.14
Performance Periods	The performance periods consist of one year, two years and three years, respectively
Performance share units, risk free interest rate	0.40%
Performance share units, Minimum volatility	29.00%
Performance share units, Maximum volatility	70.00%
Number of performance share units, granted	254,133
Number of performance share units, outstanding	254,133
Grant date fair value of performance share units	5.4
Performance multiplier, minimum	0.00%
Performance multiplier, maximum	300.00%
Performance multiplier assumed	100.00%
Minimum final number of shares of common stock issuable based on performance multiplier	0
Maximum final number of shares of common stock issuable based on performance multiplier	688,545
Total compensation expense recorded for performance share units	0.2
Unrecognized expense, performance share units	5.2
Term for Amortization of Performance Share Compensation cost	Through December 2015
Minimum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amortized vesting period of restricted stock			1 year
Maximum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amortized vesting period of restricted stock			4 years
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized			0.4
Total intrinsic value of options outstanding	$ 0	$ 0
Number of option, Exercised	0	0
Latest year with option issuances	2008

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Oil and Gas Reserves Information (Unaudited) - Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Reserves (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Cash Flows Relating to Proved Reserves:
Future Cash Flows	$ 5,064,519	$ 7,656,654
Future Costs:
Production	(1,585,309)	(2,259,147)
Development and Abandonment	(1,165,991)	(2,174,656)
Future Income Taxes	(552,843)	(843,266)
Future Net Cash Flows	1,760,376	2,379,585
10% Discount Factor	(976,159)	(1,266,090)
Standardized Measure of Discounted Future Net Cash Flows	$ 784,217	$ 1,113,495

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Income Taxes - Carryforwards Available to Reduce Future Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified				12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Years of Expiration Carryforward Unlimited [Member]	Dec. 31, 2012 U.S. Federal [Member]	Dec. 31, 2012 Louisiana [Member]
Carryforward Available To Reduce Future Income Taxes [Line Items]
Net operating loss, Years of Expiration Carryforward				2017 - 2032	2012 - 2027
Net operating loss, Tax Credit Carryforward, Amount				$ 192,255	$ 536,365
Alternative minimum tax credits carryforward	$ 19,080	$ 19,093	$ 19,080

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Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Stock Options Outstanding

The Company has not issued any stock options since 2008. The following table summarizes information related to stock options outstanding at December 31, 2012:

Exercise Price	Weighted Average Remaining  Life (in years)		Number of Options Outstanding		Number of Options Exercisable
$32.50		2.9		51,500		51,500
$33.22		4.0		65,650		65,650
$54.36		0.4		40,000		40,000
				157,150		157,150

Stock Option Activity under Company's Incentive Plans

The following table summarizes information related to stock option activity under the Company’s incentive plans for the year ended December 31, 2012:

	Number of Options			Weighted Average Exercise  Price
Outstanding at January 1, 2012		203,150		$	36.64
Expired and forfeited		(46,000	)	$	30.74
Outstanding at December 31, 2012		157,150		$	38.36
Vested and Exercisable at December 31, 2012		157,150		$	38.36

Options Exercised and Tax Benefit Realized

	2010		2011		2012
	(In thousands)
Cash received for options exercised	$	1,427	$	—	$	—
Actual tax benefit realized	$	4,221	$	—	$	—

Summary of Restricted Stock Activity

A summary of restricted stock activity for the year ended December 31, 2012 is presented below:

	Number of Restricted Shares			Weighted Average Grant Price
Outstanding at January 1, 2012		2,114,520		$	31.25
Granted		303,530		$	15.49
Vested		(437,123	)	$	35.07
Forfeitures		(20,092	)	$	26.10
Outstanding at December 31, 2012		1,960,835		$	28.01

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Supplementary Quarterly Financial Data (Unaudited) - Condensed Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Sep. 30, 2012 As Reported [Member]	Jun. 30, 2012 As Reported [Member]	Mar. 31, 2012 As Reported [Member]	Dec. 31, 2011 As Reported [Member]	Sep. 30, 2012 Adjustments [Member]	Jun. 30, 2012 Adjustments [Member]	Mar. 31, 2012 Adjustments [Member]	Dec. 31, 2011 Adjustments [Member]	Sep. 30, 2012 As Restated [Member]	Jun. 30, 2012 As Restated [Member]	Mar. 31, 2012 As Restated [Member]	Dec. 31, 2011 As Restated [Member]
ASSETS
Cash and Cash Equivalents	$ 4,471	$ 8,460	$ 1,732	$ 90,472	$ 2,569	$ 3,505	$ 3,750	$ 8,460					$ 2,569	$ 3,505	$ 3,750	$ 8,460
Restricted Cash							9,549								9,549
Accounts Receivable	36,150	47,082			51,907	42,122	51,918		(2,176)	(1,235)			49,731	40,887	51,918
Marketable Securities	12,312	47,642			15,072	15,204	17,154						15,072	15,204	17,154
Assets Held for Sale							91,520								91,520
Derivative Financial Instruments	11,651	459			10,823	18,536							10,823	18,536
Other Current Assets	6,954	2,796			7,658	6,695	2,908						7,658	6,695	2,908
Total current assets	77,146	113,090			88,029	86,062	176,799		(2,176)	(1,235)			85,853	84,827	176,799
Net Property and Equipment	2,470,053	2,509,845			2,546,024	2,547,219	2,517,672						2,546,024	2,547,219	2,517,672
Derivative Financial Instruments					2,836	6,235							2,836	6,235
Other Assets	19,944	16,949			20,950	21,796	16,201						20,950	21,796	16,201
Total Assets	2,567,143	2,639,884			2,657,839	2,661,312	2,710,672		(2,176)	(1,235)			2,655,663	2,660,077	2,710,672
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities	139,058	187,207			200,086	176,726	250,060						200,086	176,726	250,060
Long-term Debt	1,324,383	1,196,908			1,238,809	1,223,235	1,207,042						1,238,809	1,223,235	1,207,042
Deferred Income Taxes Payable	149,901	201,705			190,784	203,530	208,078		(822)	2,881	(863)		189,962	206,411	207,215
Reserve for Future Abandonment Costs	17,994	13,997	6,674	6,561	14,545	14,191	13,536						14,545	14,191	13,536
Derivative Financial Instruments							2,205								2,205
Other Non-Current Liabilities	2,273	2,442			2,301	2,337	2,394						2,301	2,337	2,394
Total liabilities	1,633,609	1,602,259			1,646,525	1,620,019	1,683,315		(822)	2,881	(863)		1,645,703	1,622,900	1,682,452
Commitments and Contingencies
Stockholders' Equity:
Common stock	24,204	24,063			24,081	24,081	24,058						24,081	24,081	24,058
Additional paid-in capital	480,595	468,709			477,199	473,881	470,844						477,199	473,881	470,844
Retained earnings	424,317	524,377			494,944	520,932	531,236		7,524	11,985	(5,484)		502,468	532,917	525,752
Accumulated other comprehensive income	4,418	20,476	32,330	30,619	15,090	22,399	1,219		(8,878)	(16,101)	6,347		6,212	6,298	7,566
Total Stockholders' Equity	933,534	1,037,625	1,068,531	1,066,111	1,011,314	1,041,293	1,027,357		(1,354)	(4,116)	863		1,009,960	1,037,177	1,028,220	1,037,625
Total liabilities and stockholders' equity	$ 2,567,143	$ 2,639,884			$ 2,657,839	$ 2,661,312	$ 2,710,672		$ (2,176)	$ (1,235)			$ 2,655,663	$ 2,660,077	$ 2,710,672

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Summary of Significant Accounting Policies - Summary of Changes in Reserve for Future Abandonment Costs (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Asset Retirement Obligation [Line Items]
Reserve for Future Abandonment Costs at beginning of the year	$ 13,997	$ 6,674	$ 6,561
New wells placed on production	1,837	417	338
Changes in estimates	2,736	5,839	596
Acquisition liabilities assumed		741
Liabilities settled and assets disposed of	(1,304)	(56)	(1,212)
Accretion expense	728	382	391
Reserve for Future Abandonment Costs at end of the year	$ 17,994	$ 13,997	$ 6,674

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Oil and Gas Reserves Information (Unaudited)

12 Months Ended

Dec. 31, 2012

Oil and Gas Reserves Information (Unaudited)

(12)   Oil and Gas Reserves Information (Unaudited)

Set forth below is a summary of the changes in Comstock’s net quantities of oil and natural gas reserves for each of the three years ended December 31, 2012:

	2010						2011						2012
	Oil (MBbls)			Natural Gas (MMcf)			Oil (MBbls)			Natural Gas (MMcf)			Oil (MBbls)			Natural Gas (MMcf)
Proved Reserves:
Beginning of year		7,214			682,389			4,219			1,025,633			32,099			1,118,632
Revisions of previous estimates		351			(6,137	)		8			(36,150	)		(397	)		(531,335	)
Extensions and discoveries		1,484			421,657			9,845			169,188			17,312			31,050
Purchases of minerals in place		—			—			18,865			50,554			—			—
Disposals of minerals in place		(4,115	)		(3,303	)		—			—			(7,486	)		(59,257	)
Production		(715	)		(68,973	)		(838	)		(90,593	)		(2,309	)		(82,490	)
End of year		4,219			1,025,633			32,099			1,118,632			39,219			476,600
Proved Developed Reserves:
Beginning of year		4,894			367,102			2,961			506,809			8,405			550,474
End of year		2,961			506,809			8,405			550,474			12,308			368,775

During 2012, the Company’s estimated quantities of proved undeveloped natural gas reserves decreased by 460 Bcf from total proved undeveloped reserves as of December 31, 2011 due to downward revisions related to the lower natural gas price that was used to determine estimated reserve quantities at December 31, 2012. Substantially all of the Company’s proved undeveloped natural gas reserves related to undrilled natural gas wells at December 31, 2011 were not economic at the lower natural gas price at December 31, 2012. The decrease in proved undeveloped natural gas reserves in 2012 resulted in an increase to the Company’s per unit amortization rate for its proved oil and gas properties and, accordingly, increased depletion, depreciation and amortization expense during 2012 as compared to previous periods.

The proved oil and gas reserves utilized in the preparation of the financial statements were estimated by Lee Keeling and Associates, independent petroleum consultants, in accordance with guidelines established by the Securities and Exchange Commission and the Financial Accounting Standards Board, which require that reserve reports be prepared under existing economic and operating conditions with no provision for price and cost escalation except by contractual agreement. All of the Company’s reserves are located onshore in the continental United States of America.

The following table sets forth the standardized measure of discounted future net cash flows relating to proved reserves at December 31, 2011 and 2012:

	2011			2012
	(In thousands)
Cash Flows Relating to Proved Reserves:
Future Cash Flows	$	7,656,654		$	5,064,519
Future Costs:
Production		(2,259,147	)		(1,585,309	)
Development and Abandonment		(2,174,656	)		(1,165,991	)
Future Income Taxes		(843,266	)		(552,843	)
Future Net Cash Flows		2,379,585			1,760,376
10% Discount Factor		(1,266,090	)		(976,159	)
Standardized Measure of Discounted Future Net Cash Flows	$	1,113,495		$	784,217

The standardized measure of discounted future net cash flows at the end of 2011 and 2012 was determined based on the simple average of the first of month market prices for oil and natural gas for each year. Prices were $92.93 per barrel of oil and $4.18 per Mcf of natural gas for 2011 and $94.61 per barrel of oil and $2.84 per Mcf of natural gas for 2012. Prices used in determining quantities of oil and natural gas reserves and future cash inflows from oil and natural gas reserves represent prices received at the Company’s sales point. These prices have been adjusted from posted or index prices for both location and quality differences. Future development and production costs are computed by estimating the expenditures to be incurred in developing and producing proved oil and gas reserves at the end of the year, based on year end costs and assuming continuation of existing economic conditions. Future income tax expenses are computed by applying the appropriate statutory tax rates to the future pre-tax net cash flows relating to proved reserves, net of the tax basis of the properties involved. The future income tax expenses give effect to permanent differences and tax credits, but do not reflect the impact of future operations.

The following table sets forth the changes in the standardized measure of discounted future net cash flows relating to proved reserves for the years ended December 31, 2010, 2011 and 2012:

	2010			2011			2012
	(In thousands)
Standardized Measure, Beginning of Year	$	426,590		$	606,136		$	1,113,495
Net change in sales price, net of production costs		141,570			1,061			(428,469	)
Development costs incurred during the year which were previously estimated		69,216			205,418			211,020
Revisions of quantity estimates		(5,433	)		(50,398	)		(892,645	)
Accretion of discount		48,911			79,763			148,697
Changes in future development and abandonment costs		(15,201	)		10,151			653,824
Changes in timing and other		66,657			(58,049	)		(16,176	)
Extensions and discoveries		321,909			540,937			467,080
Purchases of minerals in place		—			316,118			—
Sales of minerals in place		(50,651	)		—			(261,971	)
Sales, net of production costs		(268,466	)		(355,654	)		(341,803	)
Net changes in income taxes		(128,966	)		(181,988	)		131,165
Standardized Measure, End of Year	$	606,136		$	1,113,495		$	784,217