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Note 2 - Significant Accounting Policies - Estimated Useful Lives of Assets (Details)	3 Months Ended
	Mar. 31, 2022
Building and Building Improvements [Member]
Estimated useful life (Year)	44 years
Building and Building Improvements [Member] | Minimum [Member]
Estimated useful life (Year)	10 years
Furniture, Fixtures and Equipment [Member]
Estimated useful life (Year)	15 years
Furniture, Fixtures and Equipment [Member] | Minimum [Member]
Estimated useful life (Year)	3 years

X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=clpr_FurnitureFixturesAndEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: