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v3.21.1

Consolidated Balance Sheets (Parenthetical) - shares | Dec. 31, 2020 | Dec. 31, 2019
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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