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Financial Risks Management - Additional Information (Details) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Oct. 16, 2017
Foreign Exchange Rates [Line Items]        
Fluctuation in currency (in percent) 10.00%      
Cash and cash equivalents and other financial assets € 263,187 € 172,486 € 278,474  
OCEANE        
Foreign Exchange Rates [Line Items]        
Aggregate nominal amount 57,000     € 180,000
Interest Rate Risk        
Foreign Exchange Rates [Line Items]        
Financial liabilities € 74,200 € 185,700 € 183,600