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Note 32 - Dividends (Details Textual) - $ / shares
12 Months Ended
Jan. 03, 2020
Dec. 31, 2019
Statement Line Items [Line Items]    
Dividends recognised as distributions to owners per share   $ 6.875
Dividend increase [member]    
Statement Line Items [Line Items]    
Dividends recognised as distributions to owners per share $ 7.50