Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Income Tax - Additional Information (Details)

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Income Tax - Additional Information (Details) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Tax [Line Items]      
Deferred tax assets € 55,877 € 45,552  
Prior Years Tax adjustments (6,544) 918 € 1,620
Tax accrual related to ongoing tax audit of prior period € 900    
Step up   € 7,926  
Statutory income tax rate 27.90% 27.90% 27.90%
Unrecognized tax losses € 3,800 € 8,794  
Swissfillon AG      
Income Tax [Line Items]      
Gain on sale of minority interest 12,258    
Equity Movements Due to Early Termination of Incentive Plans      
Income Tax [Line Items]      
Release of deferred tax assets 2,421    
Italy      
Income Tax [Line Items]      
Prior Years Tax adjustments € 7,559    
Italy | Nuova Ompi S.r.l.      
Income Tax [Line Items]      
Percentage of required payment one off tax to revalue tax of assets   3.00%  
Step up   € 7,926  
CHINA | Ompi Pharma Packaging Tech. Co Ltd      
Income Tax [Line Items]      
Revised Corporate Tax Rate   15.00%  
Statutory income tax rate   25.00%