Note 7 - Derivative Instruments - Effect of Derivative Instruments Designated as Cash Flow Hedges (Details) - Designated as Hedging Instrument [Member] - Cash Flow Hedging [Member] - Foreign Exchange Contract [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Gain (Loss) Recognized in AOCI, net of tax	$ (434)	$ 271
Gain/ (Loss) Reclassified from AOCI into Income			$ (143)	$ (221)