Financial instruments and financial risk management - Currency and interest rate risk (Details) - EUR (€)	12 Months Ended
Jun. 30, 2024	Jun. 30, 2023
Disclosure of risk management strategy
Approximate percentage of net foreign currency exposure that the entity hedges	70.00%
Derivative financial assets held for hedging	€ 0	€ 0
Derivative financial liabilities held for hedging	0	€ 0
Revolving credit facility
Disclosure of risk management strategy
Notional amount	€ 75,000,000.0
Maximum
Disclosure of risk management strategy
Duration of foreign currency hedging transactions	1 year
Currency risk \| United States of America, Dollars
Disclosure of risk management strategy
Percentage of reasonably possible increase in risk assumption	10.00%	10.00%
Percentage of reasonably possible decrease in risk assumption	(10.00%)	(10.00%)
Increase (decrease) in profit and loss due to reasonably possible increase in designated risk component	€ 275,000	€ (260,000)
Increase (decrease) in profit and loss due to reasonably possible decrease in designated risk component	€ (336,000)	€ 318,000
Currency risk \| United Kingdom, Pounds
Disclosure of risk management strategy
Percentage of reasonably possible increase in risk assumption	10.00%	10.00%
Percentage of reasonably possible decrease in risk assumption	(10.00%)	(10.00%)
Increase (decrease) in profit and loss due to reasonably possible increase in designated risk component	€ 414,000	€ 33,000
Increase (decrease) in profit and loss due to reasonably possible decrease in designated risk component	€ (505,000)	€ (40,000)

The amount of derivative financial assets held for hedging. [Refer: Derivative financial assets]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 55
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-URIDate 2023-03-23

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- Definition

The amount of derivative financial liabilities held for hedging. [Refer: Derivative financial liabilities]

+ References

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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.

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The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
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-URIDate 2023-03-23

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- Definition

Approximate percentage of net foreign currency exposure that the entity hedges

+ References

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Duration of foreign currency hedging transactions

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- Definition

The increase (decrease) in profit and loss as a result of an decrease in a designated risk component that was reasonably possible at the end of the reporting period

+ References

No definition available.

+ Details

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- Definition

The increase (decrease) in profit and loss as a result of an increase in a designated risk component that was reasonably possible at the end of the reporting period

+ References

No definition available.

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- Definition

The reasonably possible percentage of the decrease in the designated risk component

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The reasonably possible percentage of the increase in the designated risk component

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No definition available.

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