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Note 8 - Fair Value Measurements - Long-term Debt (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Long-term debt | $ 2,988,016 | $ 2,946,804
Reported Value Measurement [Member] |  |
Long-term debt | 2,960,512 | 2,915,498
Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 2,839,664 | 2,798,210
Fair Value, Inputs, Level 2 [Member] | Bank Credit Facility [Member] | Line of Credit [Member] |  |
Long-term debt | 1,087,600 | 1,046,300
Fair Value, Inputs, Level 2 [Member] | Bank Credit Facility [Member] | Line of Credit [Member] | Reported Value Measurement [Member] |  |
Long-term debt | 1,076,351 | 1,032,897
Fair Value, Inputs, Level 2 [Member] | Bank Credit Facility [Member] | Line of Credit [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 1,066,123 | 1,021,206
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 | 993,182 | 992,208
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 | 957,500
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 | 890,563 | 889,889
Fair Value, Inputs, Level 1 [Member] | Senior Note 4750 Due 2031 Member | Senior Notes [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 815,625 | 819,000
Fair Value, Inputs, Level 3 [Member] | Other Long-Term Debt [Member] |  |
Long-term debt | 416 | 504
Fair Value, Inputs, Level 3 [Member] | Other Long-Term Debt [Member] | Reported Value Measurement [Member] |  |
Long-term debt | 416 | 504
Fair Value, Inputs, Level 3 [Member] | Other Long-Term Debt [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | $ 416 | $ 504

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