Note 3 - Fair Value Measurements and Derivative Financial Instruments - Summary of Gross Presentation, Effects of Offsetting and Net Presentation of Derivative Instruments (Details) - Interest Rate Swap [Member] $ in Thousands	Sep. 30, 2017 USD ($)
Other assets, Gross Amount Recognized	$ 197
Other assets, Gross Amount Offset on the Balance Sheet	(7)
Other assets	190
Other long-term liabilities, Gross Amount Recognized	7
Other long-term liabilities, Gross Amount Offset on the Balance Sheet	(7)
Other long-time liabilities	$ 0