Note 12 - Other Income (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest Income, Other	$ 149	$ 92	$ 0
Interest Expense, Total	$ 106	$ 72	$ 134

Amount of the cost of borrowed funds accounted for as interest expense.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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