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Note 9 - Other disclosures - Subsequent events (Details)
€ in Thousands, $ in Thousands
1 Months Ended 2 Months Ended 6 Months Ended
Nov. 30, 2021
EUR (€)
Sep. 06, 2022
USD ($)
shares
Jun. 30, 2022
USD ($)
Disclosure of non-adjusting events after reporting period [line items]      
Gross proceeds from issuance € 142,334   $ 150,000
Shares sold      
Disclosure of non-adjusting events after reporting period [line items]      
Number of shares issued | shares   3,454,267  
Gross proceeds from issuance | $   $ 10,126