The amount of minimum financing transaction for convertible note conversion.

No definition available.

Name:	cenn_ConvertibleNoteConversionConditionMinimumFinancingTransaction
Namespace Prefix:	cenn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Face amount of debt security investments convertible note.

+ References

No definition available.

+ Details

Name:	cenn_ConvertibleNoteDebtInvestmentFaceAmount
Namespace Prefix:	cenn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	cenn_DebtSecurityInvestmentsAbstract
Namespace Prefix:	cenn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of minimum convertible note pre money valuation.

+ References

No definition available.

+ Details

Name:	cenn_MinimumConvertibleNotePreMoneyValuation
Namespace Prefix:	cenn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage of minimum outstanding voting acquired.

+ References

No definition available.

+ Details

Name:	cenn_PercentageOfMinimumOutstandingVotingAcquired
Namespace Prefix:	cenn_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow for the purchase of convertible note.

+ References

No definition available.

+ Details

Name:	cenn_PurchaseOfConvertibleNote
Namespace Prefix:	cenn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-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

Reference 2: 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

+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and investment in debt security measured at amortized cost (held-to-maturity), classified as noncurrent.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtSecuritiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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

LONG-TERM INVESTMENTS, Debt Security Investments (Details) - USD ($)	1 Months Ended		12 Months Ended
	Aug. 31, 2023	Jul. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Aug. 30, 2024	Jun. 30, 2024	Jul. 24, 2023
Debt Security Investments [Abstract]
Purchase of convertible note			$ 0	$ 600,000
Minimum financing transaction for convertible note conversion			3,000,000
Minimum convertible note pre money valuation			$ 38,250,000
Percentage of minimum outstanding voting acquired			50.00%
Acton [Member]
Debt Security Investments [Abstract]
Convertible notes debt investment face amount					$ 600,000		$ 1,000,000
Interest rate						5.00%
Purchase of convertible note	$ 600,000	$ 600,000
Convertible note debt investments			$ 641,712	$ 611,712
Maturity date			Jul. 24, 2025