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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 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Balance $ 2,341,379 $ 2,308,612 $ 2,259,255 $ 2,214,087
Balance 2,421,756 2,419,762 2,421,756 2,419,762
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]        
Balance (74,298) (63,079) (101,545) (52,704)
Other comprehensive income (loss) 20,375 [1] (43,566) [2] 47,622 [3] (53,941) [4]
Balance (53,923) (106,645) (53,923) (106,645)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]        
Balance 31,955 16,677 36,443 (2,051)
Other comprehensive income (loss) 5,752 [5] 7,129 [6] 1,264 [3] 25,857 [4]
Balance 37,707 23,806 37,707 23,806
AOCI Attributable to Parent [Member]        
Balance (42,343) (46,402) (65,102) (54,755)
Other comprehensive income (loss) 26,127 (36,437) 48,886 [3] (28,084) [4]
Balance $ (16,216) $ (82,839) $ (16,216) $ (82,839)
[1] Represents favorable impact from the weakening of the U.S. dollar against foreign currencies during the three and six months ended June 30, 2023, particularly the Euro, British Pound, and Mexican Peso.
[2] Represents unfavorable impact from the strengthening of the U.S. dollar against foreign currencies during the three and six months ended June 30, 2022, particularly the Euro and British Pound.
[3] Represents unrealized gains of $1,687 on the interest rate swaps, net of tax effect of $(423) for the six months ended June 30, 2023.
[4] Represents unrealized gains of $34,591 on the interest rate swaps, net of tax effect of $(8,734) for the six months ended June 30, 2022.
[5] Represents unrealized gains of $7,674 on the interest rate swaps, net of tax effect of $(1,922) for the three months ended June 30, 2023.
[6] Represents unrealized gains of $9,537 on the interest rate swaps, net of tax effect of $(2,408) for the three months ended June 30, 2022.