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Note 6 - Personnel Expenses Including Share-based Remuneration - Options Activities (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Statement Line Items [Line Items]    
Outstanding at period start
Granted during the period 150,000
Forfeited during the period
Exercised during the period
Expired during the period
Outstanding at period end 150,000