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Note 8 - Related-party Transactions (Details Textual) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Oct. 10, 2024	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Ironhound Management [Member]
Related Party Transaction, Amounts of Transaction				$ 500
Consulting Services, Initial Fee	$ 125
Overhead Charged Related to Office Expenses [Member]
Related Party Transaction, Amounts of Transaction		$ 60	$ 120	$ 120	$ 178
Reimbursable Payroll Expense [Member]
Related Party Transaction, Amounts of Transaction		$ 74	$ 89		$ 44	$ 135

X

- Definition

Represents the initial fee on consulting services.

+ References

No definition available.

+ Details

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

X

- Definition

Amount of transactions with related party during the financial reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

+ Details

Name:	us-gaap_RelatedPartyTransactionAmountsOfTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=clpr_IronhoundManagementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=clpr_OverheadChargedRelatedToOfficeExpensesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=clpr_ReimbursablePayrollExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: