Note 9 - Debt and Other Financing Arrangements (Details Textual) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Long-term Debt, Total	$ 1,316	$ 1,316
Loan Agreement [Member]
Long-term Debt, Weighted Average Interest Rate, over Time	4.00%	4.20%
Interest Expense, Total	$ 14	$ 46
Debt Instrument, Interest Rate, Effective Percentage	3.90%	3.90%
Long-term Debt, Total	$ 1,300	$ 1,300