2017 Q4 Form 10-K Financial Statement

#000156459018003306 Filed on February 27, 2018

View on sec.gov

Income Statement

Concept 2017 Q4 2017 Q3 2017 Q2
Revenue $73.20M $66.80M $61.47M
YoY Change 50.93% 32.8% 51.03%
Cost Of Revenue $15.90M $15.60M $14.10M
YoY Change 14.39% -11.86% -22.95%
Gross Profit $57.30M $51.20M $47.40M
YoY Change 65.61% 57.06% 111.61%
Gross Profit Margin 78.28% 76.65% 77.11%
Selling, General & Admin $7.000M $6.200M $6.600M
YoY Change -17.65% 47.62% 15.79%
% of Gross Profit 12.22% 12.11% 13.92%
Research & Development $0.00 $0.00 $0.00
YoY Change -100.0%
% of Gross Profit 0.0% 0.0% 0.0%
Depreciation & Amortization $30.60M $32.81M $30.32M
YoY Change 5.15% -12.51% -16.01%
% of Gross Profit 53.4% 64.08% 63.97%
Operating Expenses $37.60M $39.00M $51.00M
YoY Change -0.27% -73.85% 22.3%
Operating Profit -$24.22M $11.19M $10.47M
YoY Change 317.3% -111.33% -146.11%
Interest Expense -$37.00M -$36.20M -$31.50M
YoY Change -17.23% 16.03% -209.06%
% of Operating Profit -323.5% -300.86%
Other Income/Expense, Net $100.0K $200.0K -$31.40M
YoY Change 0.0% 0.0% -10565.0%
Pretax Income -$61.10M -$24.81M -$20.93M
YoY Change 18.64% -15.34% -523.58%
Income Tax $300.0K -$69.00K $500.0K
% Of Pretax Income
Net Earnings -$42.30M -$24.74M -$21.44M
YoY Change -23.0% -13.13% -541.92%
Net Earnings / Revenue -57.78% -37.03% -34.88%
Basic Earnings Per Share
Diluted Earnings Per Share -$2.858M -$1.669M -$1.456M
COMMON SHARES
Basic Shares Outstanding
Diluted Shares Outstanding

Balance Sheet

Concept 2017 Q4 2017 Q3 2017 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments $61.30M $25.40M $35.30M
YoY Change -6.98% -4.51% -47.63%
Cash & Equivalents $61.26M $25.40M $35.30M
Short-Term Investments
Other Short-Term Assets $4.100M $5.700M $8.000M
YoY Change 124.78% 185.0% 242.03%
Inventory
Prepaid Expenses
Receivables $237.2M $34.40M $32.10M
Other Receivables $0.00 $0.00 $0.00
Total Short-Term Assets $302.5M $65.50M $75.40M
YoY Change 235.47% -14.6% -42.33%
LONG-TERM ASSETS
Property, Plant & Equipment $607.9M $833.2M $825.5M
YoY Change -23.89% 3.16% -9.82%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets $900.0K $900.0K $969.0K
YoY Change -10.0% -18.18% -13.56%
Total Long-Term Assets $627.9M $834.1M $826.4M
YoY Change -21.49% 3.13% -9.82%
TOTAL ASSETS
Total Short-Term Assets $302.5M $65.50M $75.40M
Total Long-Term Assets $627.9M $834.1M $826.4M
Total Assets $930.4M $899.6M $901.8M
YoY Change 4.55% 1.59% -13.88%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $126.0M $92.30M $72.46M
YoY Change 178.15% 144.18% 55.48%
Accrued Expenses $42.50M $17.20M $36.40M
YoY Change 5.2% 2.38% -9.5%
Deferred Revenue
YoY Change
Short-Term Debt $0.00 $0.00 $0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities $168.5M $112.2M $110.6M
YoY Change 83.75% 92.78% 27.39%
LONG-TERM LIABILITIES
Long-Term Debt $1.111B $1.090B $1.070B
YoY Change 6.32% 6.26% -6.55%
Other Long-Term Liabilities $10.40M $16.10M $16.20M
YoY Change -34.18% -0.62% 1.25%
Total Long-Term Liabilities $1.121B $1.106B $1.086B
YoY Change 5.72% 6.15% -5.13%
TOTAL LIABILITIES
Total Short-Term Liabilities $168.5M $112.2M $110.6M
Total Long-Term Liabilities $1.121B $1.106B $1.086B
Total Liabilities $1.300B $1.228B $1.207B
YoY Change 11.94% 11.09% -3.78%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock $7.714M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity -$369.3M -$328.4M -$305.3M
YoY Change
Total Liabilities & Shareholders Equity $930.4M $899.6M $901.8M
YoY Change 4.55% 1.59% -13.89%

Cashflow Statement

Concept 2017 Q4 2017 Q3 2017 Q2
OPERATING ACTIVITIES
Net Income -$42.30M -$24.74M -$21.44M
YoY Change -23.0% -13.13% -541.92%
Depreciation, Depletion And Amortization $30.60M $32.81M $30.32M
YoY Change 5.15% -12.51% -16.01%
Cash From Operating Activities $83.80M $35.30M $52.30M
YoY Change 170.32% -250.21% -26250.0%
INVESTING ACTIVITIES
Capital Expenditures -$48.00M -$46.70M -$47.40M
YoY Change 194.48% 531.08% 143.08%
Acquisitions
YoY Change
Other Investing Activities $0.00 $1.500M $0.00
YoY Change -100.0% -100.0%
Cash From Investing Activities -$48.00M -$45.20M -$47.40M
YoY Change -605.26% 502.67% 159.02%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities 0.000 0.000 0.000
YoY Change -100.0% -100.0% -100.0%
NET CHANGE
Cash From Operating Activities 83.80M 35.30M 52.30M
Cash From Investing Activities -48.00M -45.20M -47.40M
Cash From Financing Activities 0.000 0.000 0.000
Net Change In Cash 35.80M -9.900M 4.900M
YoY Change -8.91% -75.74% -122.27%
FREE CASH FLOW
Cash From Operating Activities $83.80M $35.30M $52.30M
Capital Expenditures -$48.00M -$46.70M -$47.40M
Free Cash Flow $131.8M $82.00M $99.70M
YoY Change 178.65% -609.32% 416.58%

Facts In Submission

Frame Concept Type Concept / XBRL Key Value Unit
CY2017Q4 us-gaap Assets Held For Sale Not Part Of Disposal Group Current
AssetsHeldForSaleNotPartOfDisposalGroupCurrent
198615000
CY2017Q4 crk Common Stock Warrants
CommonStockWarrants
3557000
CY2017Q4 us-gaap Common Stock Shares Issued
CommonStockSharesIssued
15427561
CY2017 us-gaap Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
-129349000
CY2017 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
-17944000
CY2017 us-gaap Oil And Condensate Revenue
OilAndCondensateRevenue
46590000
CY2017 us-gaap Oil And Gas Sales Revenue
OilAndGasSalesRevenue
255331000
CY2016 us-gaap Gains Losses On Extinguishment Of Debt
GainsLossesOnExtinguishmentOfDebt
189052000
CY2017 us-gaap Net Income Loss
NetIncomeLoss
-111405000
CY2017 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-7.61
CY2014Q4 us-gaap Stockholders Equity
StockholdersEquity
870272000
CY2015 us-gaap Stock Issued During Period Value Share Based Compensation
StockIssuedDuringPeriodValueShareBasedCompensation
8149000
CY2015 us-gaap Adjustments Related To Tax Withholding For Share Based Compensation
AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
526000
CY2015Q4 us-gaap Stockholders Equity
StockholdersEquity
-171258000
CY2016 us-gaap Amortization Of Financing Costs And Discounts
AmortizationOfFinancingCostsAndDiscounts
17788000
CY2017 us-gaap Amortization Of Financing Costs And Discounts
AmortizationOfFinancingCostsAndDiscounts
35880000
CY2016 us-gaap Paid In Kind Interest
PaidInKindInterest
11860000
CY2017 us-gaap Paid In Kind Interest
PaidInKindInterest
38073000
CY2015 us-gaap Share Based Compensation
ShareBasedCompensation
8149000
CY2016 us-gaap Share Based Compensation
ShareBasedCompensation
4660000
CY2017 us-gaap Share Based Compensation
ShareBasedCompensation
5923000
CY2015 crk Income Tax Benefit Cost From Share Based Compensation Operating Activities
IncomeTaxBenefitCostFromShareBasedCompensationOperatingActivities
-2044000
CY2016 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
3651000
CY2017 us-gaap Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
16128000
CY2016 us-gaap Stock Issued During Period Value Share Based Compensation
StockIssuedDuringPeriodValueShareBasedCompensation
4660000
CY2016 us-gaap Adjustments Related To Tax Withholding For Share Based Compensation
AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
313000
CY2016 us-gaap Stock Issued During Period Value Conversion Of Convertible Securities
StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
1639000
CY2016 crk Stock Issued In Exchange For Debt Value
StockIssuedInExchangeForDebtValue
13603000
CY2016 us-gaap Stock And Warrants Issued During Period Value Preferred Stock And Warrants
StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants
15623000
CY2016 crk Stock And Warrants Exercised During Period Value Preferred Stock And Warrants
StockAndWarrantsExercisedDuringPeriodValuePreferredStockAndWarrants
13000
CY2016 crk Stock Issuance Costs During Period Value Preferred Stock And Warrants
StockIssuanceCostsDuringPeriodValuePreferredStockAndWarrants
102000
CY2017 us-gaap Stock Issued During Period Value Share Based Compensation
StockIssuedDuringPeriodValueShareBasedCompensation
5923000
CY2017 us-gaap Adjustments Related To Tax Withholding For Share Based Compensation
AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
312000
CY2017 us-gaap Stock Issued During Period Value Conversion Of Convertible Securities
StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
7789000
CY2017 crk Stock And Warrants Exercised During Period Value Preferred Stock And Warrants
StockAndWarrantsExercisedDuringPeriodValuePreferredStockAndWarrants
2000
CY2016 us-gaap Deferred Income Taxes And Tax Credits
DeferredIncomeTaxesAndTaxCredits
7105000
CY2017 us-gaap Deferred Income Taxes And Tax Credits
DeferredIncomeTaxesAndTaxCredits
-18080000
CY2015 us-gaap Gain Loss On Sale Of Property
GainLossOnSaleOfProperty
-112085000
CY2016 us-gaap Gain Loss On Sale Of Property
GainLossOnSaleOfProperty
-14315000
CY2017 us-gaap Gain Loss On Sale Of Property
GainLossOnSaleOfProperty
-1060000
CY2015 crk Dry Hole Costs Exploratory Lease Impairments And Other Exploration Costs
DryHoleCostsExploratoryLeaseImpairmentsAndOtherExplorationCosts
70694000
CY2016 crk Dry Hole Costs Exploratory Lease Impairments And Other Exploration Costs
DryHoleCostsExploratoryLeaseImpairmentsAndOtherExplorationCosts
84144000
CY2016 crk Derivative Cash Paid Received On Hedge
DerivativeCashPaidReceivedOnHedge
-2120000
CY2017 crk Derivative Cash Paid Received On Hedge
DerivativeCashPaidReceivedOnHedge
-9405000
CY2016 us-gaap Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
-169000
CY2017 us-gaap Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
921000
CY2016 us-gaap Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
-12029000
CY2017 us-gaap Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
80013000
CY2016 us-gaap Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
-23728000
CY2017 us-gaap Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
174614000
CY2016 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
57424000
CY2017 us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
180481000
CY2015 us-gaap Proceeds From Sale Of Other Investments
ProceedsFromSaleOfOtherInvestments
102485000
CY2016 us-gaap Proceeds From Sale Of Other Investments
ProceedsFromSaleOfOtherInvestments
27855000
CY2017 us-gaap Proceeds From Sale Of Other Investments
ProceedsFromSaleOfOtherInvestments
1528000
CY2015 us-gaap Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
-161725000
CY2016 us-gaap Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
-29569000
CY2017 us-gaap Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
-178953000
CY2015 us-gaap Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
790000000
CY2017 us-gaap Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
8000000
CY2015 us-gaap Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
465000000
CY2017 us-gaap Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
8000000
CY2015 crk Payments To Retire Debt
PaymentsToRetireDebt
42655000
CY2016 crk Payments To Retire Debt
PaymentsToRetireDebt
3397000
CY2015 us-gaap Payment Of Financing And Stock Issuance Costs
PaymentOfFinancingAndStockIssuanceCosts
16201000
CY2016 us-gaap Payment Of Financing And Stock Issuance Costs
PaymentOfFinancingAndStockIssuanceCosts
11108000
CY2016 us-gaap Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
313000
CY2017 us-gaap Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
312000
CY2015 crk Income Tax Benefit Cost From Share Based Compensation Financing Activities
IncomeTaxBenefitCostFromShareBasedCompensationFinancingActivities
-2044000
CY2017 us-gaap Proceeds From Warrant Exercises
ProceedsFromWarrantExercises
2000
CY2016 us-gaap Stockholders Equity Note Stock Split Conversion Ratio1
StockholdersEquityNoteStockSplitConversionRatio1
0.2
CY2017Q4 us-gaap Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
6449000
CY2017 us-gaap Stockholders Equity Reverse Stock Split
StockholdersEquityReverseStockSplit
a one for five (1:5) reverse split
CY2017Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
0
CY2016Q4 us-gaap Derivative Liabilities
DerivativeLiabilities
6000000
CY2017Q4 us-gaap Derivative Assets
DerivativeAssets
1300000
CY2017 crk Conversion Ratio Of Oil To Natural Gas In Units Of Production
ConversionRatioOfOilToNaturalGasInUnitsOfProduction
One barrel of oil for six thousand cubic feet of natural gas
CY2016 crk Impairment Charges Related To Unevaluated Properties
ImpairmentChargesRelatedToUnevaluatedProperties
84144000
CY2015 crk Impairment Charges Related To Unevaluated Properties
ImpairmentChargesRelatedToUnevaluatedProperties
68900000
CY2017 us-gaap Proceeds From Sale Of Oil And Gas Property And Equipment
ProceedsFromSaleOfOilAndGasPropertyAndEquipment
1500000
CY2017 us-gaap Gain Loss On Sale Of Oil And Gas Property
GainLossOnSaleOfOilAndGasProperty
-1060000
CY2016Q4 crk Accrued Drilling Costs
AccruedDrillingCosts
7498000
CY2017Q4 crk Accrued Drilling Costs
AccruedDrillingCosts
5874000
CY2017Q4 us-gaap Interest Payable Current
InterestPayableCurrent
21277000
CY2016Q4 crk Accrued Transportation Costs
AccruedTransportationCosts
2227000
CY2017Q4 crk Accrued Transportation Costs
AccruedTransportationCosts
3269000
CY2017Q4 crk Accrued Asset Retirement Obligation Assets Held For Sale
AccruedAssetRetirementObligationAssetsHeldForSale
4557000
CY2017 crk Asset Retirement Obligation Assets Held For Sale
AssetRetirementObligationAssetsHeldForSale
4557000
CY2017 crk Asset Retirement Obligation Assets Disposed
AssetRetirementObligationAssetsDisposed
320000
CY2017 us-gaap Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
810000
CY2017 us-gaap Number Of Operating Segments
NumberOfOperatingSegments
1
CY2015 crk General And Administrative Expense Reimbursements Of Overhead Costs
GeneralAndAdministrativeExpenseReimbursementsOfOverheadCosts
13900000
CY2016 crk General And Administrative Expense Reimbursements Of Overhead Costs
GeneralAndAdministrativeExpenseReimbursementsOfOverheadCosts
12400000
CY2017 crk General And Administrative Expense Reimbursements Of Overhead Costs
GeneralAndAdministrativeExpenseReimbursementsOfOverheadCosts
11700000
CY2017 crk Performance Units Adjustment For Performance Multiplier Range Minimum
PerformanceUnitsAdjustmentForPerformanceMultiplierRangeMinimum
0.00
CY2017 crk Performance Units Adjustment For Performance Multiplier Range Maximum
PerformanceUnitsAdjustmentForPerformanceMultiplierRangeMaximum
2.00
CY2017Q4 us-gaap Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1
ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
0.01
CY2017 crk Participating Securities That Share In Losses
ParticipatingSecuritiesThatShareInLosses
0
CY2016 crk Participating Securities That Share In Losses
ParticipatingSecuritiesThatShareInLosses
0
CY2015 crk Participating Securities That Share In Losses
ParticipatingSecuritiesThatShareInLosses
0
CY2015 crk Net Income Loss Available To Common Stockholders Basic And Diluted
NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted
-1047109000
CY2016 crk Net Income Loss Available To Common Stockholders Basic And Diluted
NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted
-135134000
CY2017 crk Net Income Loss Available To Common Stockholders Basic And Diluted
NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted
-111405000
CY2015 crk Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Option Nonvested Weighted Average Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionNonvestedWeightedAverageNumber
293000
CY2016 crk Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Option Nonvested Weighted Average Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionNonvestedWeightedAverageNumber
344000
CY2017 crk Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Option Nonvested Weighted Average Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionNonvestedWeightedAverageNumber
612000
CY2015 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
20000
CY2016 us-gaap Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
11000
CY2016 crk Antidilutive Securities Warrants For Common Stock Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesWarrantsForCommonStockExcludedFromComputationOfEarningsPerShareAmount
337000
CY2017 crk Antidilutive Securities Warrants For Common Stock Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesWarrantsForCommonStockExcludedFromComputationOfEarningsPerShareAmount
463000
CY2015 crk Antidilutive Securities Performance Share Units Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesPerformanceShareUnitsExcludedFromComputationOfEarningsPerShareAmount
136000
CY2016 crk Antidilutive Securities Performance Share Units Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesPerformanceShareUnitsExcludedFromComputationOfEarningsPerShareAmount
136000
CY2017 crk Antidilutive Securities Performance Share Units Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesPerformanceShareUnitsExcludedFromComputationOfEarningsPerShareAmount
274000
CY2015 crk Antidilutive Securities Excluded From Computation Of Earnings Per Unit Weighted Average Grant Date Fair Value Price
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerUnitWeightedAverageGrantDateFairValuePrice
35.35
CY2016 crk Antidilutive Securities Excluded From Computation Of Earnings Per Unit Weighted Average Grant Date Fair Value Price
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerUnitWeightedAverageGrantDateFairValuePrice
22.17
CY2017 crk Antidilutive Securities Excluded From Computation Of Earnings Per Unit Weighted Average Grant Date Fair Value Price
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerUnitWeightedAverageGrantDateFairValuePrice
17.12
CY2016 crk Antidilutive Securities Contingently Convertible Shares Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesContingentlyConvertibleSharesExcludedFromComputationOfEarningsPerShareAmount
11574000
CY2017 crk Antidilutive Securities Contingently Convertible Shares Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesContingentlyConvertibleSharesExcludedFromComputationOfEarningsPerShareAmount
37046000
CY2015 us-gaap Interest Paid
InterestPaid
94177000
CY2016 us-gaap Interest Paid
InterestPaid
105449000
CY2017 us-gaap Interest Paid
InterestPaid
73941000
CY2015 us-gaap Income Taxes Paid Net
IncomeTaxesPaidNet
77000
CY2017 us-gaap Income Taxes Paid Net
IncomeTaxesPaidNet
3000
CY2017 us-gaap Interest Costs Capitalized
InterestCostsCapitalized
0
CY2015 us-gaap Interest Costs Capitalized
InterestCostsCapitalized
900000
CY2016 us-gaap Interest Costs Capitalized
InterestCostsCapitalized
0
CY2017Q4 crk Jv Acreage Cost Reimbursement Right To Acquire Working Interest Per Well
JVAcreageCostReimbursementRightToAcquireWorkingInterestPerWell
0.25
CY2017 crk Bossier Shale Jv Wells
BossierShaleJVWells
4
CY2017 crk Working Interest For Jv Acreage And Infrastructure
WorkingInterestForJVAcreageAndInfrastructure
0.50
CY2017 crk Proceeds Received To Meet Or Exceed Jv Production Targets
ProceedsReceivedToMeetOrExceedJVProductionTargets
400000
CY2017 crk Proceeds To Be Received Per Jv Drilled Well
ProceedsToBeReceivedPerJVDrilledWell
80000
CY2015 crk Oil And Gas Properties Sold Oil And Gas Sales
OilAndGasPropertiesSoldOilAndGasSales
157956000
CY2016 crk Oil And Gas Properties Sold Oil And Gas Sales
OilAndGasPropertiesSoldOilAndGasSales
63303000
CY2017 crk Oil And Gas Properties Sold Oil And Gas Sales
OilAndGasPropertiesSoldOilAndGasSales
48949000
CY2015 crk Oil And Gas Properties Sold Operating Expenses
OilAndGasPropertiesSoldOperatingExpenses
274651000
CY2016 crk Oil And Gas Properties Sold Operating Expenses
OilAndGasPropertiesSoldOperatingExpenses
80467000
CY2017 crk Oil And Gas Properties Sold Operating Expenses
OilAndGasPropertiesSoldOperatingExpenses
44861000
CY2015 crk Oil And Gas Properties Sold Operating Income Loss
OilAndGasPropertiesSoldOperatingIncomeLoss
-116695000
CY2016 crk Oil And Gas Properties Sold Operating Income Loss
OilAndGasPropertiesSoldOperatingIncomeLoss
-17164000
CY2017 crk Oil And Gas Properties Sold Operating Income Loss
OilAndGasPropertiesSoldOperatingIncomeLoss
4088000
CY2016 us-gaap Proceeds From Sale Of Oil And Gas Property And Equipment
ProceedsFromSaleOfOilAndGasPropertyAndEquipment
2100000
CY2016 us-gaap Gain Loss On Disposition Of Assets
GainLossOnDispositionOfAssets
-1600000
CY2016Q1 crk Property Exchange Net Acres Received
PropertyExchangeNetAcresReceived
3637
CY2016Q1 crk Property Exchange Gross Wells Received
PropertyExchangeGrossWellsReceived
4
CY2016Q1 crk Property Exchange Net Wells Received
PropertyExchangeNetWellsReceived
3.5
CY2016Q1 crk Property Exchange Net Acres Disposed
PropertyExchangeNetAcresDisposed
2547
CY2016Q1 crk Property Exchange Gross Wells Disposed
PropertyExchangeGrossWellsDisposed
7
CY2016Q1 crk Property Exchange Net Wells Disposed
PropertyExchangeNetWellsDisposed
5.3
CY2016 crk Gain On Property Exchange Of Oil And Gas Properties
GainOnPropertyExchangeOfOilAndGasProperties
700000
CY2016Q4 crk Capitalized Costs Lease Hold Costs
CapitalizedCostsLeaseHoldCosts
662022000
CY2017Q4 crk Capitalized Costs Lease Hold Costs
CapitalizedCostsLeaseHoldCosts
491507000
CY2016Q4 us-gaap Capitalized Costs Wells And Related Equipment And Facilities
CapitalizedCostsWellsAndRelatedEquipmentAndFacilities
3135079000
CY2017Q4 us-gaap Capitalized Costs Wells And Related Equipment And Facilities
CapitalizedCostsWellsAndRelatedEquipmentAndFacilities
2140243000
CY2016Q4 us-gaap Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities
CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities
3009236000
CY2017Q4 us-gaap Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities
CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities
2032927000
CY2016Q4 us-gaap Capitalized Costs Oil And Gas Producing Activities Net
CapitalizedCostsOilAndGasProducingActivitiesNet
787865000
CY2017Q4 us-gaap Capitalized Costs Oil And Gas Producing Activities Net
CapitalizedCostsOilAndGasProducingActivitiesNet
598823000
CY2015 us-gaap Costs Incurred Acquisition Of Unproved Oil And Gas Properties
CostsIncurredAcquisitionOfUnprovedOilAndGasProperties
12972000
CY2017 us-gaap Costs Incurred Development Costs
CostsIncurredDevelopmentCosts
177432000
CY2015 us-gaap Costs Incurred Exploration Costs
CostsIncurredExplorationCosts
12265000
CY2015 us-gaap Costs Incurred Acquisition Of Oil And Gas Properties
CostsIncurredAcquisitionOfOilAndGasProperties
246502000
CY2015 us-gaap Costs Incurred Development Costs
CostsIncurredDevelopmentCosts
221265000
CY2016 us-gaap Costs Incurred Development Costs
CostsIncurredDevelopmentCosts
58587000
CY2017Q4 crk Long Term Debt Maturities Repayments Of Principal And Paid In Kind Interest After Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalAndPaidInKindInterestAfterYearFive
0
CY2017Q4 crk Long Term Debt Principal And Paid In Kind Interest Amount
LongTermDebtPrincipalAndPaidInKindInterestAmount
1200712000
CY2015 us-gaap Write Off Of Deferred Debt Issuance Cost
WriteOffOfDeferredDebtIssuanceCost
3700000
CY2016 us-gaap Costs Incurred Acquisition Of Oil And Gas Properties
CostsIncurredAcquisitionOfOilAndGasProperties
58587000
CY2017 us-gaap Costs Incurred Acquisition Of Oil And Gas Properties
CostsIncurredAcquisitionOfOilAndGasProperties
177432000
CY2016Q4 us-gaap Unamortized Debt Issuance Expense
UnamortizedDebtIssuanceExpense
16183000
CY2017Q4 us-gaap Unamortized Debt Issuance Expense
UnamortizedDebtIssuanceExpense
10685000
CY2017Q4 crk Long Term Debt Maturities Repayments Of Principal And Paid In Kind Interest In Next Twelve Months
LongTermDebtMaturitiesRepaymentsOfPrincipalAndPaidInKindInterestInNextTwelveMonths
0
CY2017Q4 crk Long Term Debt Maturities Repayments Of Principal And Paid In Kind Interest In Year Two
LongTermDebtMaturitiesRepaymentsOfPrincipalAndPaidInKindInterestInYearTwo
307973000
CY2017Q4 crk Long Term Debt Maturities Repayments Of Principal And Paid In Kind Interest In Year Three
LongTermDebtMaturitiesRepaymentsOfPrincipalAndPaidInKindInterestInYearThree
892739000
CY2017Q4 crk Long Term Debt Maturities Repayments Of Principal And Paid In Kind Interest In Year Four
LongTermDebtMaturitiesRepaymentsOfPrincipalAndPaidInKindInterestInYearFour
0
CY2017Q4 crk Long Term Debt Maturities Repayments Of Principal And Paid In Kind Interest In Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalAndPaidInKindInterestInYearFive
0
CY2015 us-gaap Operating Leases Rent Expense Net
OperatingLeasesRentExpenseNet
1500000
CY2016 us-gaap Operating Leases Rent Expense Net
OperatingLeasesRentExpenseNet
1500000
CY2017 us-gaap Operating Leases Rent Expense Net
OperatingLeasesRentExpenseNet
1600000
CY2017Q4 us-gaap Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
1560000
CY2017Q4 us-gaap Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
1560000
CY2017Q4 us-gaap Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
1560000
CY2017Q4 us-gaap Operating Leases Future Minimum Payments Due In Four Years
OperatingLeasesFutureMinimumPaymentsDueInFourYears
1560000
CY2017Q4 us-gaap Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
6240000
CY2017 crk Natural Gas Transportation Agreement Term
NaturalGasTransportationAgreementTerm
through July 2019
CY2017Q4 crk Maximum Commitments Under Natural Gas Transportation Agreements
MaximumCommitmentsUnderNaturalGasTransportationAgreements
2400000
CY2017 crk Contract Terms Related To Drilling Services
ContractTermsRelatedToDrillingServices
through June 2018
CY2017Q4 crk Commitments For Contracted Drilling Services
CommitmentsForContractedDrillingServices
7400000
CY2016Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
5000000
CY2017Q4 us-gaap Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
5000000
CY2016Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
10.00
CY2017Q4 us-gaap Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
10.00
CY2016Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2017Q4 us-gaap Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
0
CY2017 us-gaap Debt Conversion Original Debt Amount1
DebtConversionOriginalDebtAmount1
9900000
CY2016 us-gaap Debt Conversion Original Debt Amount1
DebtConversionOriginalDebtAmount1
2100000
CY2016Q4 us-gaap Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights
ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
1917342
CY2017Q4 us-gaap Class Of Warrant Or Right Outstanding
ClassOfWarrantOrRightOutstanding
415087
CY2015 us-gaap Defined Benefit Plan Contributions By Employer
DefinedBenefitPlanContributionsByEmployer
888000
CY2016 us-gaap Defined Benefit Plan Contributions By Employer
DefinedBenefitPlanContributionsByEmployer
758000
CY2017 us-gaap Defined Benefit Plan Contributions By Employer
DefinedBenefitPlanContributionsByEmployer
760590
CY2015 us-gaap Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
0
CY2016 us-gaap Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
0
CY2017 us-gaap Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
-19086000
CY2015 us-gaap Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
804000
CY2016 us-gaap Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
64000
CY2017 us-gaap Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
136000
CY2015 us-gaap Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
-149171000
CY2015 us-gaap Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
-6078000
CY2016 us-gaap Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
7105000
CY2017 us-gaap Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
1006000
CY2017 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.35
CY2016 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.35
CY2015 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.35
CY2015 us-gaap Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
-420544000
CY2016 us-gaap Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
-44788000
CY2017 us-gaap Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
-45272000
CY2017 us-gaap Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
-892000
CY2015 us-gaap Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost
IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
539000
CY2017 us-gaap Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
-19086000
CY2015 us-gaap Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
283585000
CY2015 us-gaap Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
-18218000
CY2016 us-gaap Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
-18860000
CY2017 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.318
CY2015 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.014
CY2016 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.147
CY2017 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.007
CY2016Q4 us-gaap Deferred Tax Assets Gross Noncurrent
DeferredTaxAssetsGrossNoncurrent
402315000
CY2016 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost
EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
-0.001
CY2016 us-gaap Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance
EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
-0.546
CY2016 us-gaap Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost
IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
73000
CY2017 us-gaap Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost
IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
1408000
CY2017 crk Income Tax Reconciliation Net Operating Loss Expirations
IncomeTaxReconciliationNetOperatingLossExpirations
1548000
CY2015 us-gaap Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
193000
CY2016 us-gaap Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
854000
CY2017 us-gaap Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
3234000
CY2017 us-gaap Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate
EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate
0.148
CY2017 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost
EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
-0.011
CY2017 crk Effective Income Tax Rate Reconciliation Net Operating Loss Expirations
EffectiveIncomeTaxRateReconciliationNetOperatingLossExpirations
-0.012
CY2016 us-gaap Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
-0.006
CY2017 us-gaap Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
-0.025
CY2015 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0.129
CY2016 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
-0.056
CY2017 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0.139
CY2016Q4 us-gaap Deferred Tax Assets Property Plant And Equipment
DeferredTaxAssetsPropertyPlantAndEquipment
10536000
CY2016Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations
4628000
CY2017Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations
3489000
CY2016Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
339914000
CY2017Q4 us-gaap Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
289803000
CY2016Q4 us-gaap Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax
DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax
20435000
CY2017Q4 us-gaap Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax
DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax
1349000
CY2016Q4 us-gaap Deferred Tax Assets Derivative Instruments
DeferredTaxAssetsDerivativeInstruments
2110000
CY2016Q4 crk Deferred Tax Assets Gain On Debt Exchange And Original Issue Discount
DeferredTaxAssetsGainOnDebtExchangeAndOriginalIssueDiscount
16169000
CY2017Q4 crk Deferred Tax Assets Gain On Debt Exchange And Original Issue Discount
DeferredTaxAssetsGainOnDebtExchangeAndOriginalIssueDiscount
4336000
CY2016Q4 us-gaap Deferred Tax Assets Other
DeferredTaxAssetsOther
8523000
CY2017Q4 us-gaap Deferred Tax Assets Other
DeferredTaxAssetsOther
3782000
CY2017Q4 us-gaap Deferred Tax Assets Gross Noncurrent
DeferredTaxAssetsGrossNoncurrent
302759000
CY2016Q4 us-gaap Deferred Tax Assets Valuation Allowance Noncurrent
DeferredTaxAssetsValuationAllowanceNoncurrent
398120000
CY2017Q4 us-gaap Deferred Tax Assets Valuation Allowance Noncurrent
DeferredTaxAssetsValuationAllowanceNoncurrent
298539000
CY2016Q4 us-gaap Deferred Tax Assets Net Noncurrent
DeferredTaxAssetsNetNoncurrent
4195000
CY2017Q4 us-gaap Deferred Tax Assets Net Noncurrent
DeferredTaxAssetsNetNoncurrent
4220000
CY2016Q4 us-gaap Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
9203000
CY2017Q4 us-gaap Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
11878000
CY2017Q4 us-gaap Deferred Tax Liabilities Derivatives
DeferredTaxLiabilitiesDerivatives
277000
CY2016Q4 us-gaap Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
4118000
CY2017Q4 us-gaap Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
2331000
CY2016Q4 us-gaap Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
13321000
CY2017Q4 us-gaap Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
14486000
CY2017Q4 crk Additional Federal And State Valuation Allowance On Net Operating Loss Carryforwards
AdditionalFederalAndStateValuationAllowanceOnNetOperatingLossCarryforwards
41100000
CY2017 crk Federal Net Operating Losses Expired
FederalNetOperatingLossesExpired
1500000
CY2017 crk Deferred Federal Tax Remeasurement Rate
DeferredFederalTaxRemeasurementRate
0.21
CY2017 crk Deferred Federal Tax Remeasurement Value
DeferredFederalTaxRemeasurementValue
140400000
CY2017 crk Cumulative Common Stock Ownership Change Over Three Year Period That Would Limit Federal And State Net Operating Loss Carry Forwards
CumulativeCommonStockOwnershipChangeOverThreeYearPeriodThatWouldLimitFederalAndStateNetOperatingLossCarryForwards
0.50
CY2017Q4 us-gaap Cash Flow Hedges Derivative Instruments At Fair Value Net
CashFlowHedgesDerivativeInstrumentsAtFairValueNet
0
CY2015 us-gaap Derivative Gain On Derivative
DerivativeGainOnDerivative
2700000
CY2017 us-gaap Derivative Gain On Derivative
DerivativeGainOnDerivative
16800000
CY2016 us-gaap Derivative Loss On Derivative
DerivativeLossOnDerivative
5400000
CY2017Q4 us-gaap Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral
DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
1300000
CY2017Q4 crk Derivative Assets Carry Value Net
DerivativeAssetsCarryValueNet
1300000
CY2016Q4 us-gaap Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral
DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
6000000
CY2016Q4 crk Derivative Liabilities At Carrying Value
DerivativeLiabilitiesAtCarryingValue
6000000
CY2016Q1 us-gaap Oil And Gas Sales Revenue
OilAndGasSalesRevenue
36163000
CY2016Q1 us-gaap Operating Income Loss
OperatingIncomeLoss
-56490000
CY2016Q1 us-gaap Net Income Loss
NetIncomeLoss
-56577000
CY2016Q1 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-5.71
CY2017Q1 us-gaap Oil And Gas Sales Revenue
OilAndGasSalesRevenue
53801000
CY2017Q2 us-gaap Oil And Gas Sales Revenue
OilAndGasSalesRevenue
61471000
CY2017Q3 us-gaap Oil And Gas Sales Revenue
OilAndGasSalesRevenue
66811000
CY2017Q4 us-gaap Oil And Gas Sales Revenue
OilAndGasSalesRevenue
73248000
CY2017Q1 us-gaap Operating Income Loss
OperatingIncomeLoss
2381000
CY2017Q2 us-gaap Operating Income Loss
OperatingIncomeLoss
10470000
CY2017Q3 us-gaap Operating Income Loss
OperatingIncomeLoss
11190000
CY2017Q4 us-gaap Operating Income Loss
OperatingIncomeLoss
-24224000
CY2017Q1 us-gaap Net Income Loss
NetIncomeLoss
-22931000
CY2017Q2 us-gaap Net Income Loss
NetIncomeLoss
-21442000
CY2017Q3 us-gaap Net Income Loss
NetIncomeLoss
-24736000
CY2017Q4 us-gaap Net Income Loss
NetIncomeLoss
-42296000
CY2017Q1 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-1.61
CY2017Q2 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-1.45
CY2017Q3 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-1.67
CY2017Q4 us-gaap Earnings Per Share Basic And Diluted
EarningsPerShareBasicAndDiluted
-2.86
CY2016Q1 us-gaap Gain Loss On Sale Of Oil And Gas Property
GainLossOnSaleOfOilAndGasProperty
740000
CY2016Q1 us-gaap Gains Losses On Extinguishment Of Debt
GainsLossesOnExtinguishmentOfDebt
33380000
CY2016Q1 crk Impairment Charges Related To Unevaluated Properties
ImpairmentChargesRelatedToUnevaluatedProperties
7753000
CY2016Q1 us-gaap Impairment Of Oil And Gas Properties
ImpairmentOfOilAndGasProperties
22718000
CY2017Q1 us-gaap Gain Loss On Sale Of Oil And Gas Property
GainLossOnSaleOfOilAndGasProperty
-24000
CY2017Q3 us-gaap Gain Loss On Sale Of Oil And Gas Property
GainLossOnSaleOfOilAndGasProperty
-1036000
CY2017Q4 us-gaap Impairment Of Oil And Gas Properties
ImpairmentOfOilAndGasProperties
43990000
CY2016 crk Percentage Of Discount Factor
PercentageOfDiscountFactor
0.10
CY2017 crk Percentage Of Discount Factor
PercentageOfDiscountFactor
0.10
CY2014Q4 us-gaap Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves
StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves
1090660000
CY2015Q4 us-gaap Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves
StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves
372139000
CY2016 us-gaap Net Increase Decrease In Sales And Transfer Prices And Production Costs
NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts
-45379000
CY2017 us-gaap Net Increase Decrease In Sales And Transfer Prices And Production Costs
NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts
326662000
CY2016 us-gaap Previously Estimated Development Costs Incurred
PreviouslyEstimatedDevelopmentCostsIncurred
45648000
CY2017 us-gaap Previously Estimated Development Costs Incurred
PreviouslyEstimatedDevelopmentCostsIncurred
119864000
CY2016 us-gaap Revisions Of Previous Quantity Estimates
RevisionsOfPreviousQuantityEstimates
113583000
CY2017 us-gaap Revisions Of Previous Quantity Estimates
RevisionsOfPreviousQuantityEstimates
57042000
CY2015 us-gaap Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount
StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount
114427000
CY2016 us-gaap Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount
StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount
37251000
CY2017 us-gaap Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount
StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount
43130000
CY2016 us-gaap Increase Decrease In Estimated Future Development Costs
IncreaseDecreaseInEstimatedFutureDevelopmentCosts
5315000
CY2017 us-gaap Increase Decrease In Estimated Future Development Costs
IncreaseDecreaseInEstimatedFutureDevelopmentCosts
-62509000
CY2016 crk Changes In Timing
ChangesInTiming
-38071000
CY2017 crk Changes In Timing
ChangesInTiming
-15565000
CY2016 us-gaap Extensions Discoveries Additions And Improved Recovery Less Related Costs
ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts
70149000
CY2017 us-gaap Extensions Discoveries Additions And Improved Recovery Less Related Costs
ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts
167135000
CY2016 us-gaap Decrease Due To Sales Of Minerals In Place
DecreaseDueToSalesOfMineralsInPlace
22449000
CY2017 us-gaap Decrease Due To Sales Of Minerals In Place
DecreaseDueToSalesOfMineralsInPlace
6027000
CY2016 us-gaap Sales And Transfers Of Oil And Gas Produced Net Of Production Costs
SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts
107253000
CY2017 us-gaap Sales And Transfers Of Oil And Gas Produced Net Of Production Costs
SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts
194562000
CY2016 us-gaap Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves
IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves
-1658000
CY2017 us-gaap Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves
IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves
17099000

Files In Submission

Name View Source Status
0001564590-18-003306-index-headers.html Edgar Link pending
0001564590-18-003306-index.html Edgar Link pending
0001564590-18-003306.txt Edgar Link pending
0001564590-18-003306-xbrl.zip Edgar Link pending
crk-10k_20171231.htm Edgar Link pending
crk-20171231.xml Edgar Link completed
crk-20171231.xsd Edgar Link pending
crk-20171231_cal.xml Edgar Link unprocessable
crk-20171231_def.xml Edgar Link unprocessable
crk-20171231_lab.xml Edgar Link unprocessable
crk-20171231_pre.xml Edgar Link unprocessable
crk-ex21_15.htm Edgar Link pending
crk-ex231_11.htm Edgar Link pending
crk-ex232_8.htm Edgar Link pending
crk-ex311_9.htm Edgar Link pending
crk-ex312_12.htm Edgar Link pending
crk-ex321_7.htm Edgar Link pending
crk-ex322_14.htm Edgar Link pending
crk-ex991_6.htm Edgar Link pending
FilingSummary.xml Edgar Link unprocessable
Financial_Report.xlsx Edgar Link pending
g2018022620294759616498.jpg Edgar Link pending
R1.htm Edgar Link pending
R10.htm Edgar Link pending
R11.htm Edgar Link pending
R12.htm Edgar Link pending
R13.htm Edgar Link pending
R14.htm Edgar Link pending
R15.htm Edgar Link pending
R16.htm Edgar Link pending
R17.htm Edgar Link pending
R18.htm Edgar Link pending
R19.htm Edgar Link pending
R2.htm Edgar Link pending
R20.htm Edgar Link pending
R21.htm Edgar Link pending
R22.htm Edgar Link pending
R23.htm Edgar Link pending
R24.htm Edgar Link pending
R25.htm Edgar Link pending
R26.htm Edgar Link pending
R27.htm Edgar Link pending
R28.htm Edgar Link pending
R29.htm Edgar Link pending
R3.htm Edgar Link pending
R30.htm Edgar Link pending
R31.htm Edgar Link pending
R32.htm Edgar Link pending
R33.htm Edgar Link pending
R34.htm Edgar Link pending
R35.htm Edgar Link pending
R36.htm Edgar Link pending
R37.htm Edgar Link pending
R38.htm Edgar Link pending
R39.htm Edgar Link pending
R4.htm Edgar Link pending
R40.htm Edgar Link pending
R41.htm Edgar Link pending
R42.htm Edgar Link pending
R43.htm Edgar Link pending
R44.htm Edgar Link pending
R45.htm Edgar Link pending
R46.htm Edgar Link pending
R47.htm Edgar Link pending
R48.htm Edgar Link pending
R49.htm Edgar Link pending
R5.htm Edgar Link pending
R50.htm Edgar Link pending
R51.htm Edgar Link pending
R52.htm Edgar Link pending
R53.htm Edgar Link pending
R54.htm Edgar Link pending
R55.htm Edgar Link pending
R56.htm Edgar Link pending
R57.htm Edgar Link pending
R58.htm Edgar Link pending
R59.htm Edgar Link pending
R6.htm Edgar Link pending
R60.htm Edgar Link pending
R61.htm Edgar Link pending
R62.htm Edgar Link pending
R63.htm Edgar Link pending
R64.htm Edgar Link pending
R65.htm Edgar Link pending
R66.htm Edgar Link pending
R67.htm Edgar Link pending
R68.htm Edgar Link pending
R69.htm Edgar Link pending
R7.htm Edgar Link pending
R70.htm Edgar Link pending
R71.htm Edgar Link pending
R72.htm Edgar Link pending
R73.htm Edgar Link pending
R74.htm Edgar Link pending
R75.htm Edgar Link pending
R8.htm Edgar Link pending
R9.htm Edgar Link pending
report.css Edgar Link pending
Show.js Edgar Link pending