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Vessels, net - Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
M/V Agamemnon, M/T Amore Mio II, M/T Miltiadis M II, M/T Ayrton II and M/T Axios
Property Plant And Equipment
Vessel improvement costs capitalized	$ 944

X

- Definition

This element represents costs for capitalized improvements of vessels.

+ References

No definition available.

+ Details

Name:	cplp_VesselsAcquisitionsAndImprovements
Namespace Prefix:	cplp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=cplp_MVAgamemnonMTAmoreMioIIMTMiltiadisMIIMTAyrtonIIMTAxiosMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: