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Note 24 - Share-based Payments - Outstanding Options (Details)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Statement Line Items [Line Items]      
Options outstanding at January 1st 131,244,000 121,770,000 126,149,000
Options issued during the period 20,435,000 24,806,000 16,568,000
Options exercised during the period (13,548,000) (11,613,000) (19,975,000)
Options forfeited during the period (2,910,000) (3,719,000) (972,000)
Options outstanding at ended year 135,221,000 131,244,000 121,770,000