Note 11 - Derivatives and Hedging Activities - Net (Gains) Losses Reclassified from Accumulated Other Comprehensive Loss (Details) - Derivatives Designated as Cash Flow Hedging Instruments [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Gain (loss) reclassified from accumulated OCI into income, Effective portion, Net, Total		$ (73)
Foreign Exchange Option Contracts [Member]
Gain (loss) reclassified from accumulated OCI into income, Effective portion, Net, Total
Foreign Exchange Forward Contracts [Member]
Gain (loss) reclassified from accumulated OCI into income, Effective portion, Net, Total		$ (73)