Note 3 - Deferred Costs and Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Amortization of Lease Origination Costs and In-place Lease Intangible Assets	$ 33	$ 25	$ 102	$ 76
Amortization of Real Estate Abatements	$ 120	$ 120	$ 361	$ 361

The aggregate expense charged against earnings to allocate the lease origination costs and in-place lease intangible assets.

No definition available.

Name:	clpr_AmortizationOfLeaseOriginationCostsAndInPlaceLeaseIntangibleAssets
Namespace Prefix:	clpr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration