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Note 6 - Accumulated Other Comprehensive Loss - Disclosure of Changes in Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Balance $ 2,259,255 $ 2,214,087
Balance 2,341,379 2,308,612
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]    
Balance (101,545) (52,704)
Other comprehensive income (loss) 27,247 [1] (10,375) [2]
Balance (74,298) (63,079)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]    
Balance 36,443 (2,051)
Other comprehensive income (loss) (4,488) [3] 18,728 [4]
Balance 31,955 16,677
AOCI Attributable to Parent [Member]    
Balance (65,102) (54,755)
Other comprehensive income (loss) 22,759 8,353
Balance $ (42,343) $ (46,402)
[1] Represents favorable impact from the weaking of the U.S. dollar against foreign currencies during the three months ended March 31, 2023, including the Euro and British Pound.
[2] Represents unfavorable impact from the strengthening of the U.S. dollar against foreign currencies during the three months ended March 31, 2022, including the Euro and British Pound.
[3] Represents unrealized losses of $(5,988) on the interest rate swaps, net of tax effect of $1,500 for the three months ended March 31, 2023.
[4] Represents unrealized gains of $25,054 on the interest rate swaps, net of tax effect of $(6,326) for the three months ended March 31, 2022.