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Employees' Leaving Entitlement - Summary of Changes To Employees' Leaving Entitlement (Detail) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Changes in net defined benefit liability (asset) [abstract]    
Beginning balance € 15,588 € 15,747
Current service cost 80 103
Interest expense 151 51
Benefits paid (446) (940)
Actuarial losses 2,309 627
Ending balance € 13,064 € 15,588