Maximum borrowing capacity under the debt agreement.

No definition available.

Name:	clpr_DebtAgreementMaximumBorrowingCapacity
Namespace Prefix:	clpr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of additional funding available from a debt instrument contingent on certain financial targets.

+ References

No definition available.

+ Details

Name:	clpr_DebtInstrumentContingentFunding
Namespace Prefix:	clpr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the interest rate floor of a debt instrument.

+ References

No definition available.

+ Details

Name:	clpr_DebtInstrumentInterestRateFloor
Namespace Prefix:	clpr_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage of payment guarantee on a debt instrument.

+ References

No definition available.

+ Details

Name:	clpr_DebtInstrumentPaymentGuaranteePercentage
Namespace Prefix:	clpr_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the period of time before the maturity date, during which period the entity has the option to prepay all (but not less than all) of the unpaid balance of the debt instrument without a prepayment premium.

+ References

No definition available.

+ Details

Name:	clpr_DebtInstrumentPrepaymentOptionNumberOfMonthsBeforeMaturity
Namespace Prefix:	clpr_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-4

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482900/835-30-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69C
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482925/835-30-45-2

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482949/835-30-55-8

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentInterestRateIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480848/942-470-50-3

+ Details

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

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481303/470-50-40-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481303/470-50-40-4

+ Details

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

+ Details

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

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(i)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

+ Details

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

Note 5 - Notes Payable (Details Textual) - USD ($) $ in Thousands										1 Months Ended	3 Months Ended			5 Months Ended	9 Months Ended		60 Months Ended	132 Months Ended
	Sep. 15, 2023	Aug. 10, 2023	Feb. 09, 2023	Dec. 22, 2021	Aug. 10, 2021	Feb. 18, 2021	May 08, 2020	Dec. 24, 2019	May 31, 2019	Apr. 30, 2022	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Sep. 30, 2023	Sep. 30, 2022	Nov. 01, 2027	Jul. 31, 2028	Mar. 31, 2023	Oct. 31, 2022	Aug. 26, 2022	Nov. 08, 2019	Feb. 21, 2018	Jun. 27, 2016
Long-Term Debt, Gross											$ 1,211,856				$ 1,211,856
Gain (Loss) on Extinguishment of Debt											$ 0		$ 0		$ (3,868)	$ 0
New York Community Bank [Member] \| Property at 10 W 65th St. Manhattan, NY [Member]
Debt Instrument, Interest Rate, Effective Percentage											7.875%				7.875%
Metlife Real Estate Lending LLC [Member] \| Clover House Loans [Member]
Long-Term Debt, Gross																						$ 82,000
Debt Instrument, Interest Rate, Effective Percentage																						3.53%
Valley National Bank [Member] \| Dean Street, Prospect Heights [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 5,000
Long-Term Line of Credit											$ 0				$ 0
BADF 953 Dean Street Lender LLC [Member] \| Dean Street, Prospect Heights [Member]
Line of Credit Facility, Maximum Borrowing Capacity		8,000
Secured First Mortgage Loan [Member] \| New York Community Bank [Member]
Debt Instrument, Face Amount							$ 329,000
Debt Instrument, Interest Rate, Stated Percentage							3.125%
Secured First Mortgage Loan [Member] \| New York Community Bank [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate							2.75%
First Mortgage Loan With Interest-only Payments [Member] \| Citi Real Estate Funding Inc. [Member]
Debt Instrument, Interest Rate, Stated Percentage									3.63%
Proceeds from Issuance of Long-Term Debt									$ 125,000
Debt Instrument, Prepayment Option, Number of Months Before Maturity (Year)									3 years
Secured First Mortgage Note [Member] \| Citi Real Estate Funding Inc. [Member] \| 141 Livingston Street, Brooklyn [Member]
Debt Instrument, Interest Rate, Stated Percentage						3.21%
Proceeds from Issuance of Long-Term Debt						$ 100,000
Gain (Loss) on Extinguishment of Debt														$ 3,868
Fixed Interest Rate Financing [Member]
Debt Instrument, Interest Rate, Stated Percentage																							4.506%
Long-Term Debt, Gross																							$ 360,000
Mortgages [Member] \| New York Community Bank [Member] \| Property at 10 W 65th St. Manhattan, NY [Member]
Debt Instrument, Interest Rate, Stated Percentage																				3.375%	2.50%
Long-Term Debt, Gross																					$ 32,200
Mortgages [Member] \| New York Community Bank [Member] \| Prime Rate [Member] \| Property at 10 W 65th St. Manhattan, NY [Member] \| Forecast [Member]
Debt Instrument, Basis Spread on Variable Rate																	2.75%
Mortgages [Member] \| Capital One Multifamily Finance LLC [Member] \| Aspen [Member]
Debt Instrument, Interest Rate, Stated Percentage																								3.68%
Long-Term Debt, Gross																								$ 70,000
Mortgages [Member] \| Capital One Multifamily Finance LLC [Member] \| Aspen [Member] \| Forecast [Member]
Debt Instrument, Periodic Payment																		$ 321
Mortgages [Member] \| Citibank NA [Member] \| Residential Property At 1010 Pacific Street [Member]
Long-Term Debt, Gross								$ 18,600
Mortgages [Member] \| Citibank NA [Member] \| Residential Property At 1010 Pacific Street [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Effective Percentage								1.25%
Mortgages [Member] \| Citibank NA [Member] \| London Interbank Offered Rate (LIBOR) 1 [Member] \| Residential Property At 1010 Pacific Street [Member]
Debt Instrument, Basis Spread on Variable Rate								3.60%
Mortgages [Member] \| Bank Leumi, N.A [Member] \| Dean Street, Prospect Heights [Member]
Debt Instrument, Face Amount		37,000
Long-Term Debt, Gross				$ 30,000
Debt Instrument, Interest Rate, Effective Percentage												9.85%		9.85%
Proceeds from Issuance of Debt										$ 6,985
Mortgages [Member] \| Bank Leumi, N.A [Member] \| Dean Street, Prospect Heights [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Effective Percentage				3.25%
Mortgages [Member] \| Bank Leumi, N.A [Member] \| Prime Rate [Member] \| Dean Street, Prospect Heights [Member]
Debt Instrument, Basis Spread on Variable Rate				1.60%
Construction Loans [Member] \| Dean Street, Prospect Heights [Member]
Debt Instrument, Face Amount		62,400
Construction Loans [Member] \| Citibank NA [Member] \| Residential Property At 1010 Pacific Street [Member]
Debt Agreement Maximum Borrowing Capacity								$ 2,987
Mortgages 2 [Member] \| AIG Asset Management[Member] \| Residential Property At 1010 Pacific Street [Member]
Debt Agreement Maximum Borrowing Capacity					$ 52,500
Mortgages 2 [Member] \| AIG Asset Management[Member] \| Residential Property At 1010 Pacific Street [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage					4.10%
Mortgages 2 [Member] \| AIG Asset Management[Member] \| London Interbank Offered Rate [Member] \| Residential Property At 1010 Pacific Street [Member]
Debt Instrument, Basis Spread on Variable Rate					3.60%
Mortgages 2 [Member] \| Valley National Bank [Member] \| Residential Property At 1010 Pacific Street [Member]
Debt Instrument, Interest Rate, Stated Percentage	6.37%		5.70%									5.55%		5.55%
Proceeds from Issuance of Long-Term Debt	$ 20,000		$ 60,000
Debt Agreement Maximum Borrowing Capacity			80,000
Debt Instrument, Contingent Funding.			$ 20,000
Debt Instrument, Interest Rate, Increase (Decrease)												15.00%
Mortgages 2 [Member] \| Valley National Bank [Member] \| Contingent Rate [member]
Debt Instrument, Basis Spread on Variable Rate			0.25%
Residential Property At 1010 Pacific Street [Member] \| AIG Asset Management[Member]
Debt Instrument, Interest Rate, Effective Percentage																			9.35%
Mezzanine Note Agreement [Member] \| Dean Street, Prospect Heights [Member]
Debt Instrument, Face Amount		$ 8,000
Debt Instrument, Basis Spread on Variable Rate		10.00%
Proceeds from Issuance of Long-Term Debt		$ 4,500
Debt Instrument, Term (Month)		30 months
Debt Instrument, Interest Rate Floor		13.00%									15.33%				15.33%
Mezzanine Note Agreement [Member] \| Valley National Bank [Member] \| Dean Street, Prospect Heights [Member]
Debt Instrument, Face Amount		$ 115,000
Senior Notes [Member] \| Dean Street, Prospect Heights [Member]
Debt Instrument, Face Amount		$ 115,000
Debt Instrument, Term (Month)		30 months
Debt Instrument, Interest Rate Floor		5.50%									9.33%				9.33%
Debt Instrument, Payment Guarantee Percentage											30.00%				30.00%
Senior Notes [Member] \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] \| Dean Street, Prospect Heights [Member]
Debt Instrument, Basis Spread on Variable Rate		4.00%
Project Loan [Member] \| Dean Street, Prospect Heights [Member]
Debt Instrument, Face Amount		$ 15,600
Line of Credit [Member] \| Valley National Bank [Member] \| Prime Rate [Member] \| Dean Street, Prospect Heights [Member]
Debt Instrument, Basis Spread on Variable Rate		1.50%