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Financial Instruments - Additional Information (Details)	Jun. 30, 2017	Dec. 31, 2016
Account for more than 10% of the partnership's revenue
Derivative Instruments Gain/ (Loss) [Line Items]
Number of customers	4	4

X

- Definition

The number of customers.

+ References

No definition available.

+ Details

Name:	cplp_NumberOfCustomers
Namespace Prefix:	cplp_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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

X

- Details

Name:	us-gaap_MajorCustomersAxis=cplp_GroupOfCustomersThatAccountForMoreThan10PercentOfRevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: