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General principles for the preparation of the consolidated financial statements - Additional Information (Detail) - EUR (€) € in Thousands	Dec. 31, 2021	Dec. 31, 2020
Disclosure of general principles for the preparation of the consolidated financial statements [Line Items]
Cash and cash equivalents	€ 53,472	€ 48,187
Unused credit facility	€ 14,947	€ 23,916

X

- Definition

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

+ References

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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X

- Definition

The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments]

+ References

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-Name IAS
-Number 7
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-Subparagraph a
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X

- Definition

Disclosure of general principles for the preparation of the consolidated financial statements [Line Items]

+ References

No definition available.

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