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Note 12 - Fair Value Measurements - Long-term Debt (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Long-term debt	$ 2,946,804	$ 3,088,474
Reported Value Measurement [Member]
Long-term debt	2,915,498	3,049,409
Estimate of Fair Value Measurement [Member]
Long-term debt	2,798,210	2,897,114
Fair Value, Inputs, Level 2 [Member] | Bank Credit Facility [Member] | Line of Credit [Member]
Long-term debt	1,046,300	1,187,800
Fair Value, Inputs, Level 2 [Member] | Bank Credit Facility [Member] | Line of Credit [Member] | Reported Value Measurement [Member]
Long-term debt	1,032,897	1,169,935
Fair Value, Inputs, Level 2 [Member] | Bank Credit Facility [Member] | Line of Credit [Member] | Estimate of Fair Value Measurement [Member]
Long-term debt	1,021,206	1,183,565
Fair Value, Inputs, Level 1 [Member] | The 4.750% Senior NotesDue December 2027 [Member] | Senior Notes [Member]
Long-term debt	1,000,000	1,000,000
Fair Value, Inputs, Level 1 [Member] | The 4.750% Senior NotesDue December 2027 [Member] | Senior Notes [Member] | Reported Value Measurement [Member]
Long-term debt	992,208	990,260
Fair Value, Inputs, Level 1 [Member] | The 4.750% Senior NotesDue December 2027 [Member] | Senior Notes [Member] | Estimate of Fair Value Measurement [Member]
Long-term debt	957,500	928,750
Fair Value, Inputs, Level 1 [Member] | Senior Note 4750 Due 2031 Member | Senior Notes [Member]
Long-term debt	900,000	900,000
Fair Value, Inputs, Level 1 [Member] | Senior Note 4750 Due 2031 Member | Senior Notes [Member] | Reported Value Measurement [Member]
Long-term debt	889,889	888,540
Fair Value, Inputs, Level 1 [Member] | Senior Note 4750 Due 2031 Member | Senior Notes [Member] | Estimate of Fair Value Measurement [Member]
Long-term debt	819,000	784,125
Fair Value, Inputs, Level 3 [Member] | Other Long-Term Debt [Member]
Long-term debt	504	674
Fair Value, Inputs, Level 3 [Member] | Other Long-Term Debt [Member] | Reported Value Measurement [Member]
Long-term debt	504	674
Fair Value, Inputs, Level 3 [Member] | Other Long-Term Debt [Member] | Estimate of Fair Value Measurement [Member]
Long-term debt	$ 504	$ 674

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-Topic 470
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