Prepaid charter revenue, detail 2 (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Movement In Intangible Assets [Roll Forward]
Time charter aquired, gross, beginning balance	$ 42,500	$ 42,000
Time charter aquired, additions		8,500
Write-off of fully amortized asset, cost	(9,000)dcix_WriteOffOfFullyAmortizedAssetCost	(8,000)dcix_WriteOffOfFullyAmortizedAssetCost
Time charter aquired, gross, ending balance	33,500	42,500	42,000
Movement In Accumulated Amortization Of Finite Lived Intangible Assets [Roll Forward]
Time charter aquired, accumulated amortization, beginning balance	(24,526)	(12,204)
Prepaid charter revenue amortization	(11,610)us-gaap_AmortizationOfIntangibleAssets	(20,322)us-gaap_AmortizationOfIntangibleAssets	(12,204)us-gaap_AmortizationOfIntangibleAssets
Write-off of fully amortized asset, accumulated amortization	9,000	8,000
Time charter aquired, accumulated amortization, ending balance	(27,136)	(24,526)	(12,204)
Prepaid Charter Revenue Net [Abstract]
Time charter acquired, net, beginning balance	17,974us-gaap_FiniteLivedIntangibleAssetsNet	29,796us-gaap_FiniteLivedIntangibleAssetsNet
Time charter acquired, net, ending balance	$ 6,364us-gaap_FiniteLivedIntangibleAssetsNet	$ 17,974us-gaap_FiniteLivedIntangibleAssetsNet	$ 29,796us-gaap_FiniteLivedIntangibleAssetsNet

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- Details

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- Definition

The figure represnts the write-off of accumulated amortization of fully amortized asset, relating to time charters acquired.

+ References

No definition available.

+ Details

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- Definition

The figure represnts the write-off of cost of fully amortized asset, relating to time charters acquired.

+ References

No definition available.

+ Details

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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- Definition

Amount of increase (decrease) in carrying value of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

No definition available.

+ Details

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