Note 7 - Derivatives and Hedging Activities - Changes in Fair Values of Derivative Financial Instruments (Details) - Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Unrealized loss at beginning of period, net of tax	$ (7,632)	$ (3,915)
Amount of gain (loss) recognized in other comprehensive income, net of tax	2,562	(5,406)
Unrealized loss at end of period, net of tax	(4,373)	(7,632)
Unhedging Caplet
Amount reclassified from accumulated other comprehensive income		513
Swap
Amount reclassified from accumulated other comprehensive income		625
Caplet Amortization.
Amount reclassified from accumulated other comprehensive income	$ 697	$ 551