Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

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- Definition

The increase (decrease) in equity resulting from share-based payment transactions. [Refer: Equity]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The number of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement.

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- Definition

The nominal value per share.

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Company Information - Bonus share award plans ("AGA") (Details)								12 Months Ended
	Jun. 28, 2021 EUR (€) € / shares	Dec. 14, 2020 EUR (€) € / shares	Jun. 28, 2020 EUR (€) € / shares	Jan. 26, 2020 EUR (€) € / shares	Jun. 28, 2019	Jan. 26, 2018	Jan. 14, 2018	Dec. 31, 2021 EUR (€) € / shares	Dec. 31, 2020 EUR (€)	Dec. 31, 2019 EUR (€)
Disclosure of terms and conditions of share-based payment arrangement [line items]
Capital increase arising from the vesting of bonus share awards \| €								€ 2,089,000	€ 938,000	€ 1,407,000
Par value per share \| € / shares								€ 0.01
AGA
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of bonus shares fully vested									517,550
AGA 2019-1
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of bonus shares fully vested	29,100				29,100			29,100
Capital increase arising from the vesting of bonus share awards \| €	€ 291,000
Par value per share \| € / shares	€ 0.01
AGA 2018-2
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of bonus shares fully vested				63,300		63,300			63,300
Capital increase arising from the vesting of bonus share awards \| €				€ 633,000
Par value per share \| € / shares				€ 0.01
AGA 2019-2
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of bonus shares fully vested			227,000		227,000				227,000
Capital increase arising from the vesting of bonus share awards \| €			€ 2,270
Par value per share \| € / shares			€ 0.01
AGA 2018-3
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of bonus shares fully vested		227,250					227,250		227,250
Capital increase arising from the vesting of bonus share awards \| €		€ 2,272,500
Par value per share \| € / shares		€ 0.01