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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, 2024
Mar. 31, 2023
Balance $ 2,343,070 $ 2,259,255
Balance 2,370,312 2,341,379
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]    
Balance (43,582) (101,545)
Other comprehensive income (loss) [1] (5,671)  
Balance (49,253) (74,298)
Other comprehensive income (loss) [2]   27,247
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]    
Balance 28,439 36,443
Other comprehensive income (loss) [3] 1,982  
Balance 30,421 31,955
Other comprehensive income (loss) [4]   (4,488)
AOCI Attributable to Parent [Member]    
Balance (15,143) (65,102)
Other comprehensive income (loss) (3,689)  
Balance $ (18,832) (42,343)
Other comprehensive income (loss)   $ 22,759
[1] Represents unfavorable impact from the strengthening of the U.S. dollar against foreign currencies during the three months ended March 31, 2024.
[2] Represents favorable impact from the weakening of the U.S. dollar against foreign currencies during the three months ended March 31, 2023, particularly the Euro and British Pound.
[3] Represents unrealized gains of $2,644 on the interest rate swaps, net of tax effect of $(662) for the three months ended March 31, 2024.
[4] 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.