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Consolidated Balance Sheets (Parenthetical) - shares	Dec. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Limited Partners - Common units issued	18,623,100	18,178,100
Limited Partners - Common units outstanding	18,623,100	18,178,100

X

- Definition

The number of common partnership units issued.

+ References

No definition available.

+ Details

Name:	cplp_CommonPartnershipUnitsIssued
Namespace Prefix:	cplp_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of common partnership units outstanding.

+ References

No definition available.

+ Details

Name:	cplp_CommonPartnershipUnitsOutstanding
Namespace Prefix:	cplp_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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