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Long-term debt, current and non current, textuals 1 (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Line Of Credit Facility [Line Items]      
Proceeds from long term bank debt $ 0us-gaap_ProceedsFromIssuanceOfLongTermDebt $ 6,000us-gaap_ProceedsFromIssuanceOfLongTermDebt $ 92,700us-gaap_ProceedsFromIssuanceOfLongTermDebt
Current portion of bank debt 6,000us-gaap_LoansPayableToBankCurrent 0us-gaap_LoansPayableToBankCurrent  
Long-term portion of bank debt 92,700us-gaap_LongTermLoansFromBank 98,700us-gaap_LongTermLoansFromBank  
[RbsCreditFacilityMember]      
Line Of Credit Facility [Line Items]      
Line of credit facility, initiation date Dec. 16, 2011    
Line of credit facility, maximum borrowing capacity 100,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_LineOfCreditFacilityAxis
= dcix_RbsCreditFacilityMember		    
Line of credit facility 98,700us-gaap_LineOfCredit
/ us-gaap_LineOfCreditFacilityAxis
= dcix_RbsCreditFacilityMember		    
Commitment fee percentage     0.99%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
/ us-gaap_LineOfCreditFacilityAxis
= dcix_RbsCreditFacilityMember
Line of credit facility remaining borrowing capacity 0us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_LineOfCreditFacilityAxis
= dcix_RbsCreditFacilityMember		    
Debt instrument, maturity date, description 5 years    
Line of credit facility age limit of vessels 20 years    
Debt instrument maturity date Jan. 17, 2017    
Line of credit facility, interest rate description Libor    
Loan margin percentage 3.10%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_LineOfCreditFacilityAxis
= dcix_RbsCreditFacilityMember		   2.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_LineOfCreditFacilityAxis
= dcix_RbsCreditFacilityMember
Line of credit facility, priority first priority mortgages over certain vessels of fleet    
Borrower minimum liquidity percentage 10.00%dcix_BorrowerMinimumLiquidityPercentage
/ us-gaap_LineOfCreditFacilityAxis
= dcix_RbsCreditFacilityMember		    
Restricted cash description security interest on the minimum cash held by the borrower in favour of the lenders   minimum cash of 10% of the drawings under the revolving credit facility, but not less than $5,000
Line of credit facility dividend restrictions The Company is not permitted to pay any dividends that would result in a breach of the financial covenants of the facility.    
Covenant breach, prepayment waived by lenders 4,236dcix_DebtDefaultAcceleratedPaymentWaived
/ us-gaap_LineOfCreditFacilityAxis
= dcix_RbsCreditFacilityMember		    
Covenant breach, description As of December 31, 2014, the Company was in compliance with all covenants relating to the loan facility, except for the minimum required security cover (hull cover ratio), the breach of which indicated that, to rectify the shortfall, the Company would have to repay to the Royal Bank of Scotland plc an amount of $4,236, or provide additional security. However, the lenders waived their right to request prepayment or provision of additional security and agreed to reassess the compliance with the covenant not earlier than March 31, 2015.    
[RbsCreditFacilityMember] | [MinimumMember]      
Line Of Credit Facility [Line Items]      
Borrower minimum liquidity $ 5,000dcix_BorrowerMinimumLiquidity
/ us-gaap_LineOfCreditFacilityAxis
= dcix_RbsCreditFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember