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Consolidated Statements of Changes in Partners' Capital (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Limited Partner [Member]
Distributions declared and paid	$ 0.90	$ 1.26	$ 2.24
Preferred Partner [Member]
Distributions declared and paid		$ 0.42	$ 0.86

X

- Definition

Refers to the amount of distribution per-unit, declared and paid to limited, class B preferred, general partners and other class of interests.

+ References

No definition available.

+ Details

Name:	cplp_DistributionPerUnit
Namespace Prefix:	cplp_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PartnerCapitalComponentsAxis=us-gaap_LimitedPartnerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PartnerCapitalComponentsAxis=us-gaap_PreferredPartnerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: