Note 6 - Financial Instruments and Fair Value Measurements - Derivatives Recognized in Condensed Consolidation Financial Statements (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Total	[1]	$ 2,293	$ (451)
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Foreign exchange forward contracts	[2]	1,488
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Foreign exchange forward contracts	[1]	656	(451)
Interest Rate Cap [Member] | Designated as Hedging Instrument [Member]
Foreign exchange forward contracts	[2]	$ 149

[1] Gains (losses) related to derivative instruments are expected to be largely offset by (losses) gains on the underlying exposures being hedged. During the three months ended March 31, 2019, a gain of $0.7 million was recognized in gain (loss) on foreign currency. During the three months ended March 31, 2018, a loss of $0.5 million was recognized in gain (loss) on foreign currency.

[2] Recognized, net of tax, as a component of other comprehensive income (loss) within stockholders' equity.