Represents the age of drybulk carriers at the time of delivery.

No definition available.

Name:	gnk_AgeOfVesselsAtTimeOfDelivery
Namespace Prefix:	gnk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the age of drybulk carriers at the time of maturity of the credit facility.

+ References

No definition available.

+ Details

Name:	gnk_AgeOfVesselsAtTimeOfMaturityOfCreditFacility
Namespace Prefix:	gnk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of the quarterly reductions in the maximum borrowing capacity which will occur through the maturity date of the credit facility.

+ References

No definition available.

+ Details

Name:	gnk_AmountOfConsecutiveQuarterlyReductionsInMaximumBorrowingCapacity
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the minimum prepayment amount to have the lien released on the vessel.

+ References

No definition available.

+ Details

Name:	gnk_AmountOfPrepaymentsToHaveLiensReleased
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Applicable margin over reference rate if ratio of maximum facility amount to aggregate appraised value of vessels mortgaged is 55% or less.

+ References

No definition available.

+ Details

Name:	gnk_ApplicableMarginOverReferenceRateForConditionOne
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Applicable margin over reference rate if ratio of maximum facility amount to aggregate appraised value of vessels mortgaged is above 55%.

+ References

No definition available.

+ Details

Name:	gnk_ApplicableMarginOverReferenceRateForConditionTwo
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the capacity of vessels expressed in deadweight tonnage (dwt), a measure of weight a ship is carrying or can safely carry.

+ References

No definition available.

+ Details

Name:	gnk_CapacityOfVesselsInDeadweightTonnage
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	gnk_ChangeOfControlAbstract
Namespace Prefix:	gnk_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument before amendment.

+ References

No definition available.

+ Details

Name:	gnk_DebtInstrumentBasisSpreadOnVariableRateBeforeAmendment
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the maximum ratio of the entity's interest-bearing debt to the sum of its interest-bearing debt and consolidated net worth measured on the last day of any fiscal quarter which is allowable under the terms of the debt instrument covenants.

+ References

No definition available.

+ Details

Name:	gnk_DebtInstrumentCovenantRatioOfGrossInterestBearingDebtToTotalCapitalMaximum
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the maximum percentage of the purchase price of a significant acquisition which may be financed with proceeds from debt instrument.

+ References

No definition available.

+ Details

Name:	gnk_DebtInstrumentMaximumPercentageOfSignificantAcquisitionPurchasePriceThatMayBeFinancedWithProceeds
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of noncurrent portion of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid.

+ References

No definition available.

+ Details

Name:	gnk_InterestPayableNoncurrent
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of years the profile is based on for which the outstanding principle of this loan is amortized.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityAmortizationPeriodOfPrincipalAmount
Namespace Prefix:	gnk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of the semi-annual reductions in the maximum borrowing capacity which will occur through the maturity date of the line of credit facility.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityAmountOfSemiAnnualReductionsInMaximumBorrowingCapacity
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the appraised value of mortgaged vessels required as percentage of the aggregate principal amount of obligations under credit facility for ceasing of mandatory payment obligations.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityAppraisedValueOfMortgagedVesselsRequiredAsPercentageOfAggregatePrincipalAmountForCeasingOfMandatoryPaymentObligations
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum amount of borrowings on the line of credit facility which may be used for working capital purposes.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityBorrowingsForWorkingCapitalMaximum
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the minimum cash required per vessel mortgaged under this facility.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityCovenantCashAndCashEquivalentAndRemainingBorrowingCapacityForWorkingCapitalPerVesselRequiredToBeMaintained
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the cash and cash equivalents and undrawn amount available for working capital required be maintained under the terms of the credit facilities' covenants.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityCovenantCashAndCashEquivalentAndRemainingBorrowingCapacityForWorkingCapitalRequiredToBeMaintained
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the ratio of consolidated total debt to consolidated adjusted earnings before, interest, taxes, depreciation and amortization allowed under the terms of the credit facilities' covenants.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityCovenantConsolidatedLeverageRatio
Namespace Prefix:	gnk_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the consolidated net worth threshold amount calculated as per the terms of the credit facilities' covenants.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityCovenantConsolidatedNetWorthThresholdBaseAmount
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the percentage of the value of any subsequent primary equity offerings that is used in the calculation of consolidated net worth threshold amount as per the terms of the credit facilities' covenants.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityCovenantConsolidatedNetWorthThresholdPercentageOfValueOfAnySubsequentPrimaryEquityOfferings
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the aggregate fair value of the mortgaged vessels to be maintained as a percentage of aggregate outstanding principal amount as per the terms of the credit facilities' covenants.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityCovenantFairMarketValueOfMortgagedVesselsAsPercentageOfAggregateOutstandingPrincipalAmount
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the aggregate fair value of the mortgaged vessels actual as a percentage of aggregate outstanding principal amount as per the terms of the credit facilities' covenants.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityCovenantFairMarketValueOfMortgagedVesselsAsPercentageOfAggregateOutstandingPrincipalAmountActual
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the aggregate fair value of the mortgaged vessels to be maintained as a percentage of aggregate outstanding principal amount as per the terms of the credit facilities' covenants.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityCovenantFairMarketValueOfMortgagedVesselsAsPercentageOfAggregateOutstandingPrincipalAmountForPeriodOne
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the aggregate fair value of the mortgaged vessels to be maintained as a percentage of aggregate outstanding principal amount after August 30, 2016 as per the terms of the credit facilities' covenants.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityCovenantFairMarketValueOfMortgagedVesselsAsPercentageOfAggregateOutstandingPrincipalAmountForPeriodTwo
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of short fall in fair value of mortgaged assets.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityCovenantFairMarketValueOfMortgagedVesselsShortfallOnAggregateOutstandingPrincipalAmount
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the ratio of EBITDA (earnings before interest, taxes, depreciation and amortization) to interest expense required to be maintained under the credit facilities' covenants.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityCovenantRatioOfEBITDAToInterestExpense
Namespace Prefix:	gnk_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

The decrease in the maximum borrowing capacity under the line of credit facility.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityDecreaseInMaximumBorrowingCapacity
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the amount of the drawdown on the line of credit facility.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityDrawdownAmount
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the percentage of facility fee on the average daily outstanding principal amount of the loans outstanding.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityFeePercentage
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the reduction in facility fee if equity offering results in desired gross proceeds.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityFeeReductionPercentageIfEquityOfferingResultsInDesiredGrossProceeds
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of indebtedness allowed to be incurred for vessel acquisitions as a percentage of the lesser of the vessel acquisition cost or fair market value.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityIndebtednessToBeIncurredForVesselAcquisitionAsPercentageOfLesserOfVesselAcquisitionCostOrFairMarketValue
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents maximum ratio of financial indebtedness to total assets under the terms of the credit facility leverage covenant.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityLeverageCovenantMaximumRatioOfFinancialIndebtednessToTotalAssets
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the minimum amount of cash balances necessary for quarterly repayments on the credit facility under the terms of the agreement.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityMinimumCashBalanceForRepayment
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the minimum cash balance per vessel required to be maintained under the credit facility, before amendment.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityMinimumCashBalanceRequiredPerVesselMortgagedBeforeAmendment
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the minimum cash balance per vessel required to be maintained for vessels owned under the credit facility.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityMinimumCashBalanceRequiredPerVesselOwned
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the notice period for cancellation of line of credit.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityNoticePeriodForCancellation
Namespace Prefix:	gnk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of credit facilities that will not increase the amount of principal indebtedness outstanding or change their maturity dates.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityNumberNotIncreasingIndebtednessOrChangingMaturityDates
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of credit facilities, which are not subject to new facility fee.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityNumberNotSubjectToNewFacilityFee
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of consecutive semi-annual reductions in maximum borrowing capacity under the line of credit facility.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityNumberOfConsecutiveSemiAnnualReductionsInMaximumBorrowingCapacity
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of draws made as of the reporting date.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityNumberOfDrawdowns
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of draws per vessel made as of the reporting date.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityNumberOfDrawdownsPerVessel
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of quarterly installments in which the line of credit facility shall be repaid.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityNumberOfQuarterlyInstallments
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of quarterly installments in which the line of each credit facility shall be repaid.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityNumberOfSemiAnnualInstallments
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of credit facilities in which the consenting lenders received an upfront fee.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityNumberWithConsentingLendersReceivingUpfrontFee
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of credit facilities having prepaid scheduled amortization payments which were applied in order of maturity.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityNumberWithPrepaidScheduledAmortizationPayments
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of credit facilities in which the vessels pledged under the facilities were granted a second priority security interest.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityNumberWithVesselsPledgedAndGrantedSecondPrioritySecurityInterest
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the required payment amount under the line of credit facility due on final maturity date.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityPaymentAmountDueAtMaturity
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the amount of upfront fee paid under the terms of credit facilities.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityPaymentOfUpfrontFee
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the percentage of repayments to be allocated to the final payment at maturity under the line of credit facility.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityPercentageOfRepaymentsToBeAllocatedToFinalPaymentAtMaturity
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of repayments to be allocated to the scheduled mandatory principal repayments under the line of credit facility.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityPercentageOfRepaymentsToBeAllocatedToScheduledMandatoryPrincipalRepayments
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period after latest vessel delivery date for first periodic repayment of the line of credit facility.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityPeriodAfterLatestVesselDeliveryDateForFirstPeriodicRepayment
Namespace Prefix:	gnk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage fee required to be paid upon maturity under the line of credit facility based on the amount outstanding following the prepayment pursuant to the amendment.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityPrepaymentFeePercentage
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of principal to be paid in the first scheduled payment of the line of credit facility after amendment.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityPrincipalPortionOfFirstScheduledPaymentAfterAmendment
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the maturity term of the credit facility from the date of the first drawdown.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityTermCommencingFromDateOfFirstDrawdown
Namespace Prefix:	gnk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of credit facilities terminated upon entry into new credit facility.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityTerminatedNumber
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the upfront fee as a percentage of the amount outstanding under the line of credit facilities paid to consenting lenders.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityUpfrontFeePercentage
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the maximum delivered cost per vessel allowed under the credit facility.

+ References

No definition available.

+ Details

Name:	gnk_MaximumCostPerVesselAllowedUnderCreditFacility
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the maximum percentage of delivered cost per vessel allowed under the credit facility.

+ References

No definition available.

+ Details

Name:	gnk_MaximumPercentageOfDeliveredCostPerVesselAllowedUnderCreditFacility
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the maximum percentage of fair market value per vessel at delivery allowed under the credit facility.

+ References

No definition available.

+ Details

Name:	gnk_MaximumPercentageOfFairMarketValueOfVesselAllowedUnderCreditFacility
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the minimum contract period for future time charter contracts required to be secured by liens.

+ References

No definition available.

+ Details

Name:	gnk_MinimumPeriodForFutureTimeCharterContractsRequiredToBeSecuredByLien
Namespace Prefix:	gnk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of assets acquired during the period utilizing funds through term loans.

+ References

No definition available.

+ Details

Name:	gnk_NumberOfAssetsAcquiredByFinancingThroughTermLoans
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of days after notice from trustee the entity is required cure the default of not making the scheduled amortization payment of its Convertible Senior Notes.

+ References

No definition available.

+ Details

Name:	gnk_NumberOfDaysAfterNoticeFromTrusteeToCureDefault
Namespace Prefix:	gnk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of days after year end the audited financial statements are to be furnished to certain lenders to allow discussions to continue without the need to file for bankruptcy relief.

+ References

No definition available.

+ Details

Name:	gnk_NumberOfDaysAfterYearEndAuditedFinancialStatementsAreToBeFurnishedToLenders
Namespace Prefix:	gnk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of single term loans for finance requirement.

+ References

No definition available.

+ Details

Name:	gnk_NumberOfSingleTermLoans
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of unencumbered assets adding as additional collateral to cover the shortfall of fair value of mortgaged assets.

+ References

No definition available.

+ Details

Name:	gnk_NumberOfUnencumberedAssetsAddingAsAdditionalCollateralToCoverShortfall
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of vessels in the fleet.

+ References

No definition available.

+ Details

Name:	gnk_NumberOfVesselsInFleet
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of vessels mortgaged by the entity as collateral in support of agreements.

+ References

No definition available.

+ Details

Name:	gnk_NumberOfVesselsMortgaged
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of vessels owned by each of the entity's wholly-owned ship-owning subsidiaries who act as guarantors under debt instrument.

+ References

No definition available.

+ Details

Name:	gnk_NumberOfVesselsOwnedByWhollyOwnedShipOwningSubsidiariesWhichProvideDebtGuarantee
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of vessels to be acquired by the entity under purchase agreement.

+ References

No definition available.

+ Details

Name:	gnk_NumberOfVesselsToBeAcquiredUnderPurchaseAgreement
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of vessels under option to purchase pursuant to the purchase agreement.

+ References

No definition available.

+ Details

Name:	gnk_NumberOfVesselsUnderOptionToPurchase
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents percentage of Amount aggregate outstanding term loan facility due per installment.

+ References

No definition available.

+ Details

Name:	gnk_PercentageOfAggregateOutstandingTermLoanFacilityAmountDuePerInstallment
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of each facility amount due as ballon payment at final maturity.

+ References

No definition available.

+ Details

Name:	gnk_PercentageOfFacilityAmountDueAsBalloonPaymentAtMaturity
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents percentage of facility amount due per installment.

+ References

No definition available.

+ Details

Name:	gnk_PercentageOfFacilityAmountDuePerInstallment
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of outstanding principal plus interest insured by China Export & Credit Insurance Corporation (Sinosure) to cover political and commercial risks.

+ References

No definition available.

+ Details

Name:	gnk_PercentageOfOutstandingPrincipalPlusInterestInsuredBySinosure
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the ownership by an other party or group NOT including Genco or certain other permitted shareholders.

+ References

No definition available.

+ Details

Name:	gnk_PercentageOfOwnershipInterestHeld
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the ownership by Genco or certain other permitted shareholders.

+ References

No definition available.

+ Details

Name:	gnk_PercentageOfOwnershipInterestHeldByParent
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the aggregate voting power held by parent.

+ References

No definition available.

+ Details

Name:	gnk_PercentageOfVotingInterestHeldByParent
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the period of time the entity pledged collateral for the Credit Facility prior to it's effective date.

+ References

No definition available.

+ Details

Name:	gnk_PeriodCollateralWasPledgedPriorToEffectiveDateOfCreditFacility
Namespace Prefix:	gnk_
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Amount of payment made towards outstanding debt during the period.

+ References

No definition available.

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Namespace Prefix:	gnk_
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Balance Type:	debit
Period Type:	duration

- Definition

Represents ratio of maximum facility amount to aggregate appraised value of vessels mortgaged.

+ References

No definition available.

+ Details

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Namespace Prefix:	gnk_
Data Type:	num:percentItemType
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Represents the remedy period available to post additional collateral or reduce the amount of the revolving loans and/or letters of credit outstanding under the terms of the credit facilities' covenants.

+ References

No definition available.

+ Details

Name:	gnk_RemedyPeriodAvailableToPostAdditionalCollateralOrReduceAmountOfRevolvingLoansOrLettersOfCreditOutstanding
Namespace Prefix:	gnk_
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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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The average effective interest rate during the reporting period.

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

When presenting a range of interest rates, the highest effective rate for funds borrowed under the debt agreement as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

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-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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When presenting a range of interest rates, the lowest effective rate for funds borrowed under the debt agreement as of the balance sheet date.

+ References

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Contractual interest rate for funds borrowed, under the debt agreement.

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

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-Section 02

-Paragraph 20

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Glossary Current Liabilities

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-Name Accounting Standards Codification

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-Paragraph 8

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-Subparagraph (SX 210.5-02.20)

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-Topic 210

-SubTopic 10

-Section 45

-Paragraph 9

-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e7018-107765

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Name Accounting Standards Codification

-Topic 944

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Balance Type:	credit
Period Type:	instant

- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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Period Type:	duration

- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

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Amount of the required periodic payments of both interest and principal.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Line-of-Credit Arrangement

-URI http://asc.fasb.org/extlink&oid=6517033

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Period Type:	instant

- Details

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Namespace Prefix:	us-gaap_
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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The lowest amount of net worth (total assets minus total liabilities) required by secondary market investors or state-imposed regulatory mandates.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 3

-Subparagraph (c)(a)

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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-Subparagraph (SX 210.4-08.(f))

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-Name Accounting Standards Codification

-Glossary Financing Activities

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-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Subparagraph (SX 210.4-08.(f))

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-Paragraph f

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-Paragraph 15

-Subparagraph (b)

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-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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Namespace Prefix:	us-gaap_
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Period Type:	duration

- Definition

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 1

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.1)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The value of all consideration given or received by the Entity in the significant acquisition or disposal.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	instant

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Number of new stock issued during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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-Paragraph 2

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-Topic 505

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-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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Period Type:	duration

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