Note 5 - Long-term Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 01, 2022	Dec. 31, 2021
Long-term debt, outstanding principal	$ 2,949,745		$ 3,069,393
Long-term debt, unamortized discount	0		(293)
Long-term debt, unamortized original fees and costs	(40,881)		(37,506)
Long-term debt, net	2,908,864		3,031,594
Long-term debt, outstanding principal, current	44,275		41,673
Long-term debt, unamortized discount, current	0		0
Long-term debt, unamortized original fees and costs, current	0		0
Current maturities of long-term debt	44,275		41,673
Long-term debt, outstanding principal, noncurrent	2,905,470		3,027,720
Long-term debt, unamortized discount, noncurrent	0		(293)
Long-term debt, unamortized original fees and costs, noncurrent	(40,881)		(37,506)
Long-term debt, net of current maturities and debt issuance costs	$ 2,864,589		$ 2,989,921
Line of Credit [Member] | Bank Credit Facility [Member]
Long-term debt, interest rate	3.04%		2.286%
Long-term debt, outstanding principal	$ 1,049,000		$ 867,897
Long-term debt, unamortized discount	0		(293)
Long-term debt, unamortized original fees and costs	(18,034)		(8,498)
Long-term debt, net	$ 1,030,966		$ 859,106
Senior Notes [Member] | Senior Note 4.750% Due 2027 [Member]
Long-term debt, interest rate	4.75%		4.75%
Long-term debt, outstanding principal	$ 1,000,000		$ 1,000,000
Long-term debt, unamortized discount	0		0
Long-term debt, unamortized original fees and costs	(10,714)		(11,688)
Long-term debt, net	$ 989,286		$ 988,312
Senior Notes [Member] | Senior Note 4750 Due 2031 Member
Long-term debt, interest rate	4.75%		4.75%
Long-term debt, outstanding principal	$ 900,000		$ 900,000
Long-term debt, unamortized discount	0		0
Long-term debt, unamortized original fees and costs	(12,133)		(13,254)
Long-term debt, net	$ 887,867		$ 886,746
Senior Notes [Member] | Senior Notes 8.625% Due 2025 [Member]
Long-term debt, interest rate		8.625%	8.625%
Long-term debt, outstanding principal			$ 300,000
Long-term debt, unamortized discount			0
Long-term debt, unamortized original fees and costs			(4,066)
Long-term debt, net			$ 295,934
Other Long-Term Debt [Member]
Long-term debt, interest rate	5.208%		5.932%
Long-term debt, outstanding principal	$ 745		$ 1,496
Long-term debt, unamortized discount	0		0
Long-term debt, unamortized original fees and costs	0		0
Long-term debt, net	$ 745		$ 1,496