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Subsequent events (Details Narrative) - Limited Partner [Member] - $ / shares	1 Months Ended		4 Months Ended		7 Months Ended
	Jan. 21, 2021	Jan. 21, 2020	Apr. 26, 2021	Apr. 27, 2020	Jul. 21, 2021
Dividend declared | $ / shares	$ 0.10	$ 0.35	$ 0.10	$ 0.35	$ 0.10
Dividends Payable, Date of Payment					Aug. 10, 2021
Dividends payable, Date of Record					Aug. 03, 2021

X

- Definition

Date the declared dividend was paid, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	cplp_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Date the holder must own the stock to be entitled to the dividend, in YYYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
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Period Type:	duration

X

- Details

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Namespace Prefix:
Data Type:	na
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Period Type: