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Note 9 - Debt and Other Financing Arrangements (Details Textual)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
USD ($)
Sep. 30, 2018
USD ($)
Long-term Debt, Weighted Average Interest Rate, over Time 3.90% 3.70%
Interest Expense, Total $ 27 $ 83
Debt Instrument, Interest Rate, Effective Percentage 3.90% 3.90%
Long-term Debt, Total $ 2,660 $ 2,660