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Note 5 - Investment in Interest-earning Time Deposits - Investment in Interest-earnings Time Deposits (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Due in one year or less $ 2,026 $ 1,604
Due after one year through five years 8,146 3,323
Total $ 10,172 $ 4,927