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Note 8 - Fair Value Measurements - Long-term Debt (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Long-term debt | $ 2,949,745 | $ 3,069,393
Reported Value Measurement [Member] |  |
Long-term debt | 2,908,864 | 3,031,594
Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 2,707,486 | 3,128,058
Fair Value, Inputs, Level 2 [Member] | Bank Credit Facility [Member] | Line of Credit [Member] |  |
Long-term debt | 1,049,000 | 867,897
Fair Value, Inputs, Level 2 [Member] | Bank Credit Facility [Member] | Line of Credit [Member] | Reported Value Measurement [Member] |  |
Long-term debt | 1,030,966 | 859,106
Fair Value, Inputs, Level 2 [Member] | Bank Credit Facility [Member] | Line of Credit [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 1,045,741 | 866,812
Fair Value, Inputs, Level 1 [Member] | Senior Note 4.750% Due 2027 [Member] | Senior Notes [Member] |  |
Long-term debt | 1,000,000 | 1,000,000
Fair Value, Inputs, Level 1 [Member] | Senior Note 4.750% Due 2027 [Member] | Senior Notes [Member] | Reported Value Measurement [Member] |  |
Long-term debt | 989,286 | 988,312
Fair Value, Inputs, Level 1 [Member] | Senior Note 4.750% Due 2027 [Member] | Senior Notes [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 905,000 | 1,023,750
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 | 887,867 | 886,746
Fair Value, Inputs, Level 1 [Member] | Senior Note 4750 Due 2031 Member | Senior Notes [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | 756,000 | 915,750
Fair Value, Inputs, Level 1 [Member] | Senior Note 8.625% Due 2025 [Member] | Senior Notes [Member] |  |
Long-term debt |  | 300,000
Fair Value, Inputs, Level 1 [Member] | Senior Note 8.625% Due 2025 [Member] | Senior Notes [Member] | Reported Value Measurement [Member] |  |
Long-term debt |  | 295,934
Fair Value, Inputs, Level 1 [Member] | Senior Note 8.625% Due 2025 [Member] | Senior Notes [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt |  | 320,250
Fair Value, Inputs, Level 3 [Member] | Other Long-Term Debt [Member] |  |
Long-term debt | 745 | 1,496
Fair Value, Inputs, Level 3 [Member] | Other Long-Term Debt [Member] | Reported Value Measurement [Member] |  |
Long-term debt | 745 | 1,496
Fair Value, Inputs, Level 3 [Member] | Other Long-Term Debt [Member] | Estimate of Fair Value Measurement [Member] |  |
Long-term debt | $ 745 | $ 1,496

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