2.4.0.8 Html 564 478 1 true 202 0 false 16 false false R1.htm 000100 - Document - Document and Entity Information Sheet http://gencoshipping.com/role/DocumentAndEntityInformation Document and Entity Information true false R2.htm 010000 - Statement - Consolidated Balance Sheets Sheet http://gencoshipping.com/role/ConsolidatedBalanceSheets Consolidated Balance Sheets false false R3.htm 010100 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://gencoshipping.com/role/ConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) false false R4.htm 020000 - Statement - Consolidated Statements of Operations Sheet http://gencoshipping.com/role/ConsolidatedStatementsOfOperations Consolidated Statements of Operations false false R5.htm 030000 - Statement - Consolidated Statements of Comprehensive (Loss) Income Sheet http://gencoshipping.com/role/ConsolidatedStatementsOfComprehensiveLossIncome Consolidated Statements of Comprehensive (Loss) Income false false R6.htm 040000 - Statement - Consolidated Statements of Equity Sheet http://gencoshipping.com/role/ConsolidatedStatementsOfEquity Consolidated Statements of Equity false false R7.htm 040100 - Statement - Consolidated Statements of Equity (Parenthetical) Sheet http://gencoshipping.com/role/ConsolidatedStatementsOfEquityParenthetical Consolidated Statements of Equity (Parenthetical) false false R8.htm 050000 - Statement - Consolidated Statements of Cash Flows Sheet http://gencoshipping.com/role/ConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows false false R9.htm 050100 - Statement - Consolidated Statements of Cash Flows (Parenthetical) Sheet http://gencoshipping.com/role/ConsolidatedStatementsOfCashFlowsParenthetical Consolidated Statements of Cash Flows (Parenthetical) false false R10.htm 060100 - Disclosure - GENERAL INFORMATION Sheet http://gencoshipping.com/role/GeneralInformation GENERAL INFORMATION false false R11.htm 060200 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Sheet http://gencoshipping.com/role/SummaryOfSignificantAccountingPolicies SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES false false R12.htm 060300 - Disclosure - SEGMENT INFORMATION Sheet http://gencoshipping.com/role/SegmentInformation SEGMENT INFORMATION false false R13.htm 060400 - Disclosure - CASH FLOW INFORMATION Sheet http://gencoshipping.com/role/CashFlowInformation CASH FLOW INFORMATION false false R14.htm 060500 - Disclosure - VESSEL ACQUISITIONS Sheet http://gencoshipping.com/role/VesselAcquisitions VESSEL ACQUISITIONS false false R15.htm 060600 - Disclosure - INVESTMENTS Sheet http://gencoshipping.com/role/Investments INVESTMENTS false false R16.htm 060700 - Disclosure - NET (LOSS) INCOME PER SHARE Sheet http://gencoshipping.com/role/NetLossIncomePerShare NET (LOSS) INCOME PER SHARE false false R17.htm 060800 - Disclosure - RELATED PARTY TRANSACTIONS Sheet http://gencoshipping.com/role/RelatedPartyTransactions RELATED PARTY TRANSACTIONS false false R18.htm 060900 - Disclosure - DEBT Sheet http://gencoshipping.com/role/Debt DEBT false false R19.htm 061000 - Disclosure - CONVERTIBLE SENIOR NOTES Notes http://gencoshipping.com/role/ConvertibleSeniorNotes CONVERTIBLE SENIOR NOTES false false R20.htm 061100 - Disclosure - INTEREST RATE SWAP AGREEMENTS Sheet http://gencoshipping.com/role/InterestRateSwapAgreements INTEREST RATE SWAP AGREEMENTS false false R21.htm 061200 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Sheet http://gencoshipping.com/role/AccumulatedOtherComprehensiveIncomeLoss ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) false false R22.htm 061300 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS Sheet http://gencoshipping.com/role/FairValueOfFinancialInstruments FAIR VALUE OF FINANCIAL INSTRUMENTS false false R23.htm 061400 - Disclosure - PREPAID EXPENSES AND OTHER CURRENT AND NONCURRENT ASSETS Sheet http://gencoshipping.com/role/PrepaidExpensesAndOtherCurrentAndNoncurrentAssets PREPAID EXPENSES AND OTHER CURRENT AND NONCURRENT ASSETS false false R24.htm 061500 - Disclosure - DEFERRED FINANCING COSTS Sheet http://gencoshipping.com/role/DeferredFinancingCosts DEFERRED FINANCING COSTS false false R25.htm 061600 - Disclosure - FIXED ASSETS Sheet http://gencoshipping.com/role/FixedAssets FIXED ASSETS false false R26.htm 061700 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED EXPENSES Sheet http://gencoshipping.com/role/AccountsPayableAndAccruedExpenses ACCOUNTS PAYABLE AND ACCRUED EXPENSES false false R27.htm 061800 - Disclosure - REVENUE FROM TIME CHARTERS Sheet http://gencoshipping.com/role/RevenueFromTimeCharters REVENUE FROM TIME CHARTERS false false R28.htm 061900 - Disclosure - COMMITMENTS AND CONTINGENCIES Sheet http://gencoshipping.com/role/CommitmentsAndContingencies COMMITMENTS AND CONTINGENCIES false false R29.htm 062000 - Disclosure - SAVINGS PLAN Sheet http://gencoshipping.com/role/SavingsPlan SAVINGS PLAN false false R30.htm 062100 - Disclosure - NONVESTED STOCK AWARDS Sheet http://gencoshipping.com/role/NonvestedStockAwards NONVESTED STOCK AWARDS false false R31.htm 062200 - Disclosure - SHARE REPURCHASE PROGRAM Sheet http://gencoshipping.com/role/ShareRepurchaseProgram SHARE REPURCHASE PROGRAM false false R32.htm 062300 - Disclosure - LEGAL PROCEEDINGS Sheet http://gencoshipping.com/role/LegalProceedings LEGAL PROCEEDINGS false false R33.htm 062400 - Disclosure - UNAUDITED QUARTERLY RESULTS OF OPERATIONS Sheet http://gencoshipping.com/role/UnauditedQuarterlyResultsOfOperations UNAUDITED QUARTERLY RESULTS OF OPERATIONS false false R34.htm 062500 - Disclosure - SUBSEQUENT EVENTS Sheet http://gencoshipping.com/role/SubsequentEvents SUBSEQUENT EVENTS false false R35.htm 070200 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) Sheet http://gencoshipping.com/role/SummaryOfSignificantAccountingPoliciesPolicies SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) false false R36.htm 080100 - Disclosure - GENERAL INFORMATION (Tables) Sheet http://gencoshipping.com/role/GeneralInformationTables GENERAL INFORMATION (Tables) false false R37.htm 080200 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) Sheet http://gencoshipping.com/role/SummaryOfSignificantAccountingPoliciesTables SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) false false R38.htm 080300 - Disclosure - SEGMENT INFORMATION (Tables) Sheet http://gencoshipping.com/role/SegmentInformationTables SEGMENT INFORMATION (Tables) false false R39.htm 080700 - Disclosure - NET (LOSS) INCOME PER SHARE (Tables) Sheet http://gencoshipping.com/role/NetLossIncomePerShareTables NET (LOSS) INCOME PER SHARE (Tables) false false R40.htm 080900 - Disclosure - DEBT (Tables) Sheet http://gencoshipping.com/role/DebtTables DEBT (Tables) false false R41.htm 081000 - Disclosure - CONVERTIBLE SENIOR NOTES (Tables) Notes http://gencoshipping.com/role/ConvertibleSeniorNotesTables CONVERTIBLE SENIOR NOTES (Tables) false false R42.htm 081100 - Disclosure - INTEREST RATE SWAP AGREEMENTS (Tables) Sheet http://gencoshipping.com/role/InterestRateSwapAgreementsTables INTEREST RATE SWAP AGREEMENTS (Tables) false false R43.htm 081200 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables) Sheet http://gencoshipping.com/role/AccumulatedOtherComprehensiveIncomeLossTables ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables) false false R44.htm 081300 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables) Sheet http://gencoshipping.com/role/FairValueOfFinancialInstrumentsTables FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables) false false R45.htm 081400 - Disclosure - PREPAID EXPENSES AND OTHER CURRENT AND NONCURRENT ASSETS (Tables) Sheet http://gencoshipping.com/role/PrepaidExpensesAndOtherCurrentAndNoncurrentAssetsTables PREPAID EXPENSES AND OTHER CURRENT AND NONCURRENT ASSETS (Tables) false false R46.htm 081500 - Disclosure - DEFERRED FINANCING COSTS (Tables) Sheet http://gencoshipping.com/role/DeferredFinancingCostsTables DEFERRED FINANCING COSTS (Tables) false false R47.htm 081600 - Disclosure - FIXED ASSETS (Tables) Sheet http://gencoshipping.com/role/FixedAssetsTables FIXED ASSETS (Tables) false false R48.htm 081700 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Tables) Sheet http://gencoshipping.com/role/AccountsPayableAndAccruedExpensesTables ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Tables) false false R49.htm 082100 - Disclosure - NONVESTED STOCK AWARDS (Tables) Sheet http://gencoshipping.com/role/NonvestedStockAwardsTables NONVESTED STOCK AWARDS (Tables) false false R50.htm 082400 - Disclosure - UNAUDITED QUARTERLY RESULTS OF OPERATIONS (Tables) Sheet http://gencoshipping.com/role/UnauditedQuarterlyResultsOfOperationsTables UNAUDITED QUARTERLY RESULTS OF OPERATIONS (Tables) false false R51.htm 090100 - Disclosure - GENERAL INFORMATION (Details Narrative) Sheet http://gencoshipping.com/role/GeneralInformationDetailsNarrative GENERAL INFORMATION (Details Narrative) false false R52.htm 090102 - Disclosure - GENERAL INFORMATION (Details) Sheet http://gencoshipping.com/role/GeneralInformationDetails GENERAL INFORMATION (Details) false false R53.htm 090200 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) Sheet http://gencoshipping.com/role/SummaryOfSignificantAccountingPoliciesDetails SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) false false R54.htm 090202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) Sheet http://gencoshipping.com/role/SummaryOfSignificantAccountingPoliciesDetails2 SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) false false R55.htm 090204 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Income taxes (Details) Sheet http://gencoshipping.com/role/SummaryOfSignificantAccountingPoliciesIncomeTaxesDetails SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Income taxes (Details) false false R56.htm 090206 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Concentration of credit risk (Details) Sheet http://gencoshipping.com/role/SummaryOfSignificantAccountingPoliciesConcentrationOfCreditRiskDetails SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Concentration of credit risk (Details) false false R57.htm 090300 - Disclosure - SEGMENT INFORMATION (Details) Sheet http://gencoshipping.com/role/SegmentInformationDetails SEGMENT INFORMATION (Details) false false R58.htm 090400 - Disclosure - CASH FLOW INFORMATION (Details) Sheet http://gencoshipping.com/role/CashFlowInformationDetails CASH FLOW INFORMATION (Details) false false R59.htm 090402 - Disclosure - CASH FLOW INFORMATION, Non-Cash Activities (Details) Sheet http://gencoshipping.com/role/CashFlowInformationNoncashActivitiesDetails CASH FLOW INFORMATION, Non-Cash Activities (Details) false false R60.htm 090404 - Disclosure - CASH FLOW INFORMATION, Nonvested Common Stock (Details) Sheet http://gencoshipping.com/role/CashFlowInformationNonvestedCommonStockDetails CASH FLOW INFORMATION, Nonvested Common Stock (Details) false false R61.htm 090500 - Disclosure - VESSEL ACQUISITIONS (Details) Sheet http://gencoshipping.com/role/VesselAcquisitionsDetails VESSEL ACQUISITIONS (Details) false false R62.htm 090600 - Disclosure - INVESTMENTS (Details) Sheet http://gencoshipping.com/role/InvestmentsDetails INVESTMENTS (Details) false false R63.htm 090700 - Disclosure - NET (LOSS) INCOME PER SHARE (Details) Sheet http://gencoshipping.com/role/NetLossIncomePerShareDetails NET (LOSS) INCOME PER SHARE (Details) false false R64.htm 090800 - Disclosure - RELATED PARTY TRANSACTIONS (Details) Sheet http://gencoshipping.com/role/RelatedPartyTransactionsDetails RELATED PARTY TRANSACTIONS (Details) false false R65.htm 090900 - Disclosure - DEBT (Details) Sheet http://gencoshipping.com/role/DebtDetails DEBT (Details) false false R66.htm 091000 - Disclosure - CONVERTIBLE SENIOR NOTES (Details) Notes http://gencoshipping.com/role/ConvertibleSeniorNotesDetails CONVERTIBLE SENIOR NOTES (Details) false false R67.htm 091100 - Disclosure - INTEREST RATE SWAP AGREEMENTS (Details) Sheet http://gencoshipping.com/role/InterestRateSwapAgreementsDetails INTEREST RATE SWAP AGREEMENTS (Details) false false R68.htm 091102 - Disclosure - INTEREST RATE SWAP AGREEMENTS (Details 2) Sheet http://gencoshipping.com/role/InterestRateSwapAgreementsDetails2 INTEREST RATE SWAP AGREEMENTS (Details 2) false false R69.htm 091104 - Disclosure - INTEREST RATE SWAP AGREEMENTS (Details 3) Sheet http://gencoshipping.com/role/InterestRateSwapAgreementsDetails3 INTEREST RATE SWAP AGREEMENTS (Details 3) false false R70.htm 091200 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) Sheet http://gencoshipping.com/role/AccumulatedOtherComprehensiveIncomeLossDetails ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) false false R71.htm 091300 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) Sheet http://gencoshipping.com/role/FairValueOfFinancialInstrumentsDetails FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) false false R72.htm 091302 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) Sheet http://gencoshipping.com/role/FairValueOfFinancialInstrumentsDetails2 FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) false false R73.htm 091400 - Disclosure - PREPAID EXPENSES AND OTHER CURRENT AND NONCURRENT ASSETS (Details) Sheet http://gencoshipping.com/role/PrepaidExpensesAndOtherCurrentAndNoncurrentAssetsDetails PREPAID EXPENSES AND OTHER CURRENT AND NONCURRENT ASSETS (Details) false false R74.htm 091500 - Disclosure - DEFERRED FINANCING COSTS (Details) Sheet http://gencoshipping.com/role/DeferredFinancingCostsDetails DEFERRED FINANCING COSTS (Details) false false R75.htm 091600 - Disclosure - FIXED ASSETS (Details) Sheet http://gencoshipping.com/role/FixedAssetsDetails FIXED ASSETS (Details) false false R76.htm 091700 - Disclosure - ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) Sheet http://gencoshipping.com/role/AccountsPayableAndAccruedExpensesDetails ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) false false R77.htm 091800 - Disclosure - REVENUE FROM TIME CHARTERS (Details) Sheet http://gencoshipping.com/role/RevenueFromTimeChartersDetails REVENUE FROM TIME CHARTERS (Details) false false R78.htm 091900 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) Sheet http://gencoshipping.com/role/CommitmentsAndContingenciesDetails COMMITMENTS AND CONTINGENCIES (Details) false false R79.htm 091902 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details 2) Sheet http://gencoshipping.com/role/CommitmentsAndContingenciesDetails2 COMMITMENTS AND CONTINGENCIES (Details 2) false false R80.htm 092000 - Disclosure - SAVINGS PLAN (Details) Sheet http://gencoshipping.com/role/SavingsPlanDetails SAVINGS PLAN (Details) false false R81.htm 092100 - Disclosure - NONVESTED STOCK AWARDS (Details) Sheet http://gencoshipping.com/role/NonvestedStockAwardsDetails NONVESTED STOCK AWARDS (Details) false false R82.htm 092102 - Disclosure - NONVESTED STOCK AWARDS, Recognized Amortization Expense (Details) Sheet http://gencoshipping.com/role/NonvestedStockAwardsRecognizedAmortizationExpenseDetails NONVESTED STOCK AWARDS, Recognized Amortization Expense (Details) false false R83.htm 092200 - Disclosure - SHARE REPURCHASE PROGRAM (Details) Sheet http://gencoshipping.com/role/ShareRepurchaseProgramDetails SHARE REPURCHASE PROGRAM (Details) false false R84.htm 092300 - Disclosure - LEGAL PROCEEDINGS (Details) Sheet http://gencoshipping.com/role/LegalProceedingsDetails LEGAL PROCEEDINGS (Details) false false R85.htm 092400 - Disclosure - UNAUDITED QUARTERLY RESULTS OF OPERATIONS (Details) Sheet http://gencoshipping.com/role/UnauditedQuarterlyResultsOfOperationsDetails UNAUDITED QUARTERLY RESULTS OF OPERATIONS (Details) false false R86.htm 092500 - Disclosure - SUBSEQUENT EVENTS (Details) Sheet http://gencoshipping.com/role/SubsequentEventsDetails SUBSEQUENT EVENTS (Details) false false All Reports Book All Reports Element gnk_DebtInstrumentBasisSpreadOnVariableRateBeforeAmendment had a mix of decimals attribute values: 2 4. Element us-gaap_CommonStockDividendsPerShareDeclared had a mix of decimals attribute values: 0 2. Element us-gaap_ConcentrationRiskPercentage1 had a mix of decimals attribute values: 1 4. Element us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 had a mix of decimals attribute values: 2 4. Element us-gaap_DerivativeFixedInterestRate had a mix of decimals attribute values: 4 5. Element us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage had a mix of decimals attribute values: 3 4. Element us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue had a mix of decimals attribute values: 0 2. Element us-gaap_SharePrice had a mix of decimals attribute values: 0 2. Process Flow-Through: 010000 - Statement - Consolidated Balance Sheets Process Flow-Through: Removing column 'Dec. 31, 2011' Process Flow-Through: Removing column 'Dec. 31, 2010' Process Flow-Through: 010100 - Statement - Consolidated Balance Sheets (Parenthetical) Process Flow-Through: 020000 - Statement - Consolidated Statements of Operations Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2013' Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2013' Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2013' Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2013' Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2012' Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2012' Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2012' Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2012' Process Flow-Through: 030000 - Statement - Consolidated Statements of Comprehensive (Loss) Income Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2013' Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2013' Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2013' Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2013' Process Flow-Through: Removing column '3 Months Ended Dec. 31, 2012' Process Flow-Through: Removing column '3 Months Ended Sep. 30, 2012' Process Flow-Through: Removing column '3 Months Ended Jun. 30, 2012' Process Flow-Through: Removing column '3 Months Ended Mar. 31, 2012' Process Flow-Through: 040100 - Statement - Consolidated Statements of Equity (Parenthetical) Process Flow-Through: Removing column '0 Months Ended Feb. 28, 2012' Process Flow-Through: 050000 - Statement - Consolidated Statements of Cash Flows Process Flow-Through: 050100 - Statement - Consolidated Statements of Cash Flows (Parenthetical) gnk-20131231.xml gnk-20131231.xsd gnk-20131231_cal.xml gnk-20131231_def.xml gnk-20131231_lab.xml gnk-20131231_pre.xml true true