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Equity - Common Shares (Details)
€ / shares in Units, € in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 31, 2022
EUR (€)
€ / shares
shares
Mar. 31, 2022
EUR (€)
€ / shares
shares
Dec. 31, 2021
EUR (€)
shares
Jan. 31, 2022
$ / shares
Disclosure of classes of share capital [line items]        
Number of common shares issued (in shares) | shares 4,479,088      
Net offering proceeds, after deducting underwriting discounts, commissions and transaction costs | € € 15,000      
Share price | (per share) € 3.35     $ 3.73
Common shares        
Disclosure of classes of share capital [line items]        
Par value per share (in euros per share) | € / shares   € 0.12    
Authorized but unissued share capital | €   € 6,230 € 6,772  
Number of shares issued and fully paid | shares   27,081,557 22,567,971