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

Fair Value Measurement - Summary of Fair Value Hierarchy for Financial Assets and Liabilities that are Measured at Fair Value on Recurring Basis (Details)

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Fair Value Measurement - Summary of Fair Value Hierarchy for Financial Assets and Liabilities that are Measured at Fair Value on Recurring Basis (Details) - Fair Value Measurements on Recurring Basis - EUR (€)
€ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value € 440,011 € 158,511
Financial liabilities, fair value 1,681 12,344
Put & Call Related to Financial Liabilities    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial liabilities, fair value   6,706
Derivatives Financial Liabilities    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial liabilities, fair value 1,681 4,417
Payables for Subsidiary Acquisition    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial liabilities, fair value   1,221
Level 1    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value 411,039 115,599
Level 2    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value 27,888 42,152
Financial liabilities, fair value 1,681 4,417
Level 2 | Derivatives Financial Liabilities    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial liabilities, fair value 1,681 4,417
Level 3    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value 1,084 760
Financial liabilities, fair value   7,927
Level 3 | Put & Call Related to Financial Liabilities    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial liabilities, fair value   6,706
Level 3 | Payables for Subsidiary Acquisition    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial liabilities, fair value   1,221
Cash and Cash Equivalents    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value 411,039 115,599
Cash and Cash Equivalents | Level 1    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value 411,039 115,599
Equity Investments Others    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value 1,084 760
Equity Investments Others | Level 3    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value 1,084 760
Derivatives Financial Assets    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value 49 19
Derivatives Financial Assets | Level 2    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value 49 19
Financial Current Assets    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value 27,168 41,523
Financial Current Assets | Level 2    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value 27,168 41,523
Other Non-Current Financial Assets    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value 671 610
Other Non-Current Financial Assets | Level 2    
Disclosure Of Fair Value Measurement Of Assets [Line Items]    
Financial assets, fair value € 671 € 610