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Other Payables - Additional Information (Detail) - EUR (€) € in Thousands			12 Months Ended
	Apr. 09, 2024	Mar. 02, 2020	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Feb. 28, 2020
Disclosure Of Trade And Other Current Payables LineItems
Payment received from parents majority shareholder			€ 2,500
Subscription price of a future rights issue						€ 15,000
Partial receipt of subscription price of a future rights issue		€ 2,500
Amount paid back to parent's majority shareholder			2,500
Loan contract amount			€ 17,353	€ 17,289
Interest rate			6.308%
Salaries and wages			€ 20,416	€ 19,447	€ 17,342
Early retirement agreement
Disclosure Of Trade And Other Current Payables LineItems
Salaries and wages			€ 637
Events After Reporting Period
Disclosure Of Trade And Other Current Payables LineItems
Amount paid back to parent's majority shareholder	€ 2,500
Loan contract amount	€ 2,500
Loan maturity date	March 31, 2027
Interest rate	2.50%

X

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

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X

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The maturity of borrowings. [Refer: Borrowings]

+ References

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- Definition

A class of employee benefits expense that represents wages and salaries. [Refer: Employee benefits expense]

+ References

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-IssueDate 2023-01-01
-Paragraph 9
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-URIDate 2023-03-23

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- Definition

Amount Paid Back to Parent's Majority Shareholder.

+ References

No definition available.

+ Details

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- Definition

Disclosure of trade and other current payables lineitems.

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- Definition

Partial receipt of subscription price of a future rights issue.

+ References

No definition available.

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- Definition

Payment received from parent's majority shareholder.

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- Definition

Subscription price of a future Rights issue.

+ References

No definition available.

+ Details

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