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

Subsidiaries With Material Non-controlling Interest - Subsidiaries With Material Non-controlling Interest (Details)

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Subsidiaries With Material Non-controlling Interest - Subsidiaries With Material Non-controlling Interest (Details) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Proportion of equity interest held by non-controlling interests:      
Proportion of equity interest held by non-controlling interests € 363 € 439  
Profit allocated to material non-controlling interest:      
Profit allocated to material non-controlling interest € 52 € (84) € 494
Ompi of Japan Co., Ltd.      
Disclosure Of Significant Investments In Subsidiaries [Line Items]      
Country Japan    
Percentage of equity interest held by non-controlling interests 49.00% 49.00%  
Proportion of equity interest held by non-controlling interests:      
Proportion of equity interest held by non-controlling interests € 419 € 487  
Profit allocated to material non-controlling interest:      
Profit allocated to material non-controlling interest € 60 € (76) 202
Medical Glass a.s.      
Disclosure Of Significant Investments In Subsidiaries [Line Items]      
Country Slovakia    
Percentage of equity interest held by non-controlling interests 0.26% 0.26%  
Proportion of equity interest held by non-controlling interests:      
Proportion of equity interest held by non-controlling interests € (56) € (48)  
Profit allocated to material non-controlling interest:      
Profit allocated to material non-controlling interest € (8) € (8) € (3)