Right-of-use assets - Carrying amounts of lease liabilities and the movements during the period (Details) - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Right-of-use assets.
Beginning balance	€ 15,436	€ 18,724	€ 21,205
Additions	1,657	204	1,452
Interest expenses	579	637	584
Interest expenses	579	637	584
Disposals			(273)
Payments	(3,095)	(4,129)	(4,244)
Ending balance	14,577	15,436	18,724
Current lease liabilities.	2,178	2,311	3,330
Non-current lease liabilities.	€ 12,399	€ 13,125	€ 15,394

The decrease in lease liabilities, resulting from disposals.

No definition available.

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Namespace Prefix:	cntg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The decrease in lease liabilities, resulting from payments.

+ References

No definition available.

+ Details

Name:	cntg_DecreaseThroughPaymentsLeaseLiabilities
Namespace Prefix:	cntg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The increase in lease liabilities, resulting from additions.

+ References

No definition available.

+ Details

Name:	cntg_IncreaseThroughAdditionsLeaseLiabilities
Namespace Prefix:	cntg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The increase in lease liabilities, resulting from interest expenses.

+ References

No definition available.

+ Details

Name:	cntg_IncreaseThroughInterestExpensesLeaseLiabilities
Namespace Prefix:	cntg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of current lease liabilities. [Refer: Lease liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2023-01-01
-Paragraph 47
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_CurrentLeaseLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of interest expense on lease liabilities. [Refer: Lease liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2023-01-01
-Paragraph 53
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2023-en-r&anchor=para_53_b&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_InterestExpenseOnLeaseLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

+ References

+ Details

Name:	ifrs-full_LeaseLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of non-current lease liabilities. [Refer: Lease liabilities]

+ References

+ Details

Name:	ifrs-full_NoncurrentLeaseLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	ifrs-full_PresentationOfLeasesForLesseeAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration