Note 16 - Financial Derivatives - Cash Flow Swap Hedges (Details) - Interest Rate Swap [Member] - Cash Flow Hedging [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Notional		$ 119,136		$ 119,136		$ 119,136
Weighted average fixed rate-pay		2.61%		2.61%		2.61%
Weighted average variable rate-receive		0.64%		0.64%		2.26%
Unrealized loss, net of taxes (1)	[1]			$ (7,925)		$ (3,412)
Periodic net settlement of swaps (2)	[2]	$ 514	$ 8	$ 769	$ (37)

[1] Included in other comprehensive income.

[2] the amount of periodic net settlement of interest rate swaps was included in interest expense.