Note 16 - Condensed Consolidating Financial Information - Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash and cash equivalents		$ 249,977	$ 249,417	$ 203,104	$ 193,862
Restricted cash		20,471	23,785	24,175	16,488
Other current assets		129,046	126,549
Property and equipment, net		2,672,553	2,716,064
Investments in subsidiaries		0	0
Intercompany receivable		0	0
Operating lease right-of-use assets		936,170	0
Other long-term assets		91,750	111,752
Intangible assets, net		1,466,891	1,466,670	842,946	881,954
Goodwill, net		1,083,287	1,062,102	888,224	826,476
Total assets		6,650,145	5,756,339
Current maturities of long-term debt		26,994	24,181
Other current liabilities		529,899	445,520
Accumulated losses of subsidiaries in excess of investment		0	0
Intercompany payable		0	0
Long-term debt, net of current maturities and debt issuance costs		3,738,937	3,955,119
Operating lease liabilities, net of current portion		840,285	0
Other long-term liabilities		248,788	185,778
Total stockholders' equity (deficit)		1,265,242	1,145,741	$ 1,097,227	$ 930,180
Total liabilities and stockholders' equity		6,650,145	5,756,339
Consolidation, Eliminations [Member]
Cash and cash equivalents		0	0
Restricted cash		0	0
Other current assets		0	(191)
Property and equipment, net		0	0
Investments in subsidiaries		(3,766,659)	(6,385,182)
Intercompany receivable		(1,090,458)	(2,480,674)
Operating lease right-of-use assets		0
Other long-term assets		0	0
Intangible assets, net		0	0
Goodwill, net		0	0
Total assets		(4,857,117)	(8,866,047)
Current maturities of long-term debt		0	0
Other current liabilities		(1,490)
Accumulated losses of subsidiaries in excess of investment		(9,946)	(9,459)
Intercompany payable		(1,088,995)	(2,480,917)
Long-term debt, net of current maturities and debt issuance costs		0	0
Operating lease liabilities, net of current portion		0
Other long-term liabilities		0	0
Total stockholders' equity (deficit)		(3,756,686)	(6,376,000)
Total liabilities and stockholders' equity		(4,857,117)	(8,866,047)
Segment Reconciling Items [Member]
Other current liabilities			329
Parent Company [Member] | Reportable Legal Entities [Member]
Cash and cash equivalents		3,007	8,697
Restricted cash		0	0
Other current assets		24,164	15,636
Property and equipment, net		159,139	117,642
Investments in subsidiaries		3,718,900	6,381,321
Intercompany receivable		1,031,342	0
Operating lease right-of-use assets		23,229
Other long-term assets		20,662	33,513
Intangible assets, net		0	0
Goodwill, net		0	0
Total assets		4,980,443	6,556,809
Current maturities of long-term debt		26,695	23,895
Other current liabilities		159,138	160,262
Accumulated losses of subsidiaries in excess of investment		0	0
Intercompany payable		0	1,509,857
Long-term debt, net of current maturities and debt issuance costs		3,680,912	3,896,699
Operating lease liabilities, net of current portion		19,189
Other long-term liabilities		(170,733)	(179,645)
Total stockholders' equity (deficit)		1,265,242	1,145,741
Total liabilities and stockholders' equity		4,980,443	6,556,809
Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Cash and cash equivalents		231,866	226,200
Restricted cash		12,668	13,703
Other current assets		100,219	108,069
Property and equipment, net		2,411,456	2,505,987
Investments in subsidiaries		47,759	0
Intercompany receivable		0	2,106,566
Operating lease right-of-use assets		886,463
Other long-term assets		22,636	30,002
Intangible assets, net		1,390,954	1,386,868
Goodwill, net		1,051,968	1,029,628
Total assets		6,155,989	7,407,023
Current maturities of long-term debt		299	286
Other current liabilities		332,393	267,250
Accumulated losses of subsidiaries in excess of investment		0	9,459
Intercompany payable		104,697	0
Long-term debt, net of current maturities and debt issuance costs		341	736
Operating lease liabilities, net of current portion		814,779
Other long-term liabilities		420,775	382,148
Total stockholders' equity (deficit)		4,482,705	6,747,144
Total liabilities and stockholders' equity		6,155,989	7,407,023
Subsidiaries [Member] | Reportable Legal Entities [Member]
Cash and cash equivalents	[1]	0	0
Restricted cash	[1]	0	0
Other current assets	[1]	55	191
Property and equipment, net	[1]	0	0
Investments in subsidiaries	[1]	0	0
Intercompany receivable	[1]	59,116	374,108
Operating lease right-of-use assets	[1]	0
Other long-term assets	[1]	0	0
Intangible assets, net	[1]	0	0
Goodwill, net	[1]	0	0
Total assets	[1]	59,171	374,299
Current maturities of long-term debt	[1]	0	0
Other current liabilities	[1]	0	0
Accumulated losses of subsidiaries in excess of investment	[1]	0	0
Intercompany payable	[1]	0	0
Long-term debt, net of current maturities and debt issuance costs	[1]	0	0
Operating lease liabilities, net of current portion	[1]	0
Other long-term liabilities	[1]	900	900
Total stockholders' equity (deficit)	[1]	58,271	373,399
Total liabilities and stockholders' equity	[1]	59,171	374,299
Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Cash and cash equivalents		15,104	14,520
Restricted cash		7,803	10,082
Other current assets		4,608	2,844
Property and equipment, net		101,958	92,435
Investments in subsidiaries		0	3,861
Intercompany receivable		0	0
Operating lease right-of-use assets		26,478
Other long-term assets		48,452	48,237
Intangible assets, net		75,937	79,802
Goodwill, net		31,319	32,474
Total assets		311,659	284,255
Current maturities of long-term debt		0	0
Other current liabilities		39,858	17,679
Accumulated losses of subsidiaries in excess of investment		9,946	0
Intercompany payable		984,298	971,060
Long-term debt, net of current maturities and debt issuance costs		57,684	57,684
Operating lease liabilities, net of current portion		6,317
Other long-term liabilities		(2,154)	(17,625)
Total stockholders' equity (deficit)		(784,290)	(744,543)
Total liabilities and stockholders' equity		311,659	284,255
Non-Guarantor Subsidiaries, Not 100% Owned [Member] | Reportable Legal Entities [Member]
Cash and cash equivalents		0	0
Restricted cash		0	0
Other current assets		0	0
Property and equipment, net		0	0
Investments in subsidiaries		0	0
Intercompany receivable		0	0
Operating lease right-of-use assets		0
Other long-term assets		0	0
Intangible assets, net		0	0
Goodwill, net		0	0
Total assets		0	0
Current maturities of long-term debt		0	0
Other current liabilities		0	0
Accumulated losses of subsidiaries in excess of investment		0	0
Intercompany payable		0	0
Long-term debt, net of current maturities and debt issuance costs		0	0
Operating lease liabilities, net of current portion		0
Other long-term liabilities		0	0
Total stockholders' equity (deficit)		0	0
Total liabilities and stockholders' equity		$ 0	$ 0

[1] Subsidiary is a 100% owned guarantor of the 6.375% Notes and is a 100% owned non-guarantor of the 6.000% Notes and 4.750% Notes.