Note 10 - Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Operating lease right-of-use assets, including favorable lease rates asset	$ 936,170	$ 0
Operating lease liabilities	$ 840,285	0
Operating leases (in years) (Year)	18 years 2 months 12 days
Operating leases	8.90%
Accrued Liabilities [Member]
Current lease liabilities (included in accrued liabilities)	$ 87,686	$ 0
Accrued Liabilities and Operating Lease Liabilities, Net of Current Portion [Member]
Total operating lease liabilities	$ 927,971