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Note 11 - Inventories - Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Statement Line Items [Line Items]    
Inventories $ 7,752
Handsets [member]    
Statement Line Items [Line Items]    
Inventories 7,656
Prepaid airtime [member]    
Statement Line Items [Line Items]    
Inventories $ 96