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Long-term debt, current and non current, textuals 2 (Details) ([RbsCreditFacilityMember], USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
[RbsCreditFacilityMember] |  |  |
Line Of Credit Facility [Line Items] |  |  |
Weighted average interest rate | 3.28%us-gaap_LongtermDebtWeightedAverageInterestRate / us-gaap_LineOfCreditFacilityAxis = dcix_RbsCreditFacilityMember | 3.16%us-gaap_LongtermDebtWeightedAverageInterestRate / us-gaap_LineOfCreditFacilityAxis = dcix_RbsCreditFacilityMember |
Interest costs incurred on bank-debt | $ 3,282 us-gaap_InterestCostsIncurred / us-gaap_LineOfCreditFacilityAxis = dcix_RbsCreditFacilityMember | $ 3,029 us-gaap_InterestCostsIncurred / us-gaap_LineOfCreditFacilityAxis = dcix_RbsCreditFacilityMember | $ 2,652 us-gaap_InterestCostsIncurred / us-gaap_LineOfCreditFacilityAxis = dcix_RbsCreditFacilityMember
Commitment fee amount | $ 0 us-gaap_LineOfCreditFacilityCommitmentFeeAmount / us-gaap_LineOfCreditFacilityAxis = dcix_RbsCreditFacilityMember | $ 53 us-gaap_LineOfCreditFacilityCommitmentFeeAmount / us-gaap_LineOfCreditFacilityAxis = dcix_RbsCreditFacilityMember | $ 150 us-gaap_LineOfCreditFacilityCommitmentFeeAmount / us-gaap_LineOfCreditFacilityAxis = dcix_RbsCreditFacilityMember

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- Definition Total interest costs incurred during the period and either capitalized or charged against earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
Name: | us-gaap_InterestCostsIncurred
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of the fee for available but unused credit capacity under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityCommitmentFeeAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average interest rate of long-term debt outstanding. + References No definition available. + Details
Name: | us-gaap_LongtermDebtWeightedAverageInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant