Note 16 - Derivative Financial Instruments - Derivative Position Designated As a Cash Flow Hedge (Details) - Designated as Hedging Instrument [Member] - Cash Flow Hedging [Member] - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Notional amount
Pay fixed swap rate	1.82%
Fair value	$ (257)	$ (51)
Interest Rate Swap, Maturing December 6, 2021 [Member]
Receive (variable index)	US 3 Month LIBOR
Pay fixed swap rate	1.89%
Fair value	$ (200)	(45)
Interest Rate Swap, Maturing December 6, 2020 [Member]
Receive (variable index)	US 3 Month LIBOR
Pay fixed swap rate	1.79%
Fair value	$ (57)	$ (6)