Note 6 - Financial Instruments and Fair Value Measurements - Derivatives Recognized in Condensed Consolidation Financial Statements (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Total		$ (756)	$ (8,107)	$ 1,390	$ (8,211)
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative instruments designated as cash flow hedging instruments:	[1]	(1,745)	(7,094)	2,261	(8,066)
Designated as Hedging Instrument [Member] | Interest Rate Cap [Member]
Derivative instruments designated as cash flow hedging instruments:	[2]	0	(298)	137	(587)
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Foreign exchange forward (c)	[3]	$ 989	$ (715)	$ (1,008)	$ 442

[1] For the three and nine months ended September 30, 2020, a $1.7 million gain and a $7.6 million loss, respectively, was recognized, net of tax, as a component of other comprehensive income (loss) within stockholders' equity, and for the nine months ended September 30, 2020, $5.3 million was recognized as a loss on foreign currency in the condensed consolidated statements of income. For the three and nine months ended September 30, 2019, $1.6 million was recognized as a loss on foreign currency in the condensed consolidated statements of income, and $5.5 million and $6.4 million, respectively, was recognized, net of tax, as a component of other comprehensive income (loss) within stockholders' equity.

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

[3] Gains (losses) related to derivative instruments are expected to be largely offset by (losses) gains on the underlying exposures being hedged. During the three and nine months ended September 30, 2020, a gain of $1.4 million and a loss of $2.0 million was recognized in gain (loss) on foreign currency. During the three and nine months ended September 30, 2019, a loss of $0.7 million and a gain of $0.4 million, respectively, was recognized in gain (loss) on foreign currency.