Note 10 - Leases - Maturity of Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
2020	$ 161,404
2021	145,491
2022	113,133
2023	112,346
2024	112,140
Thereafter	1,273,966
Total lease payments	1,918,480
Less imputed interest	(990,509)
Operating lease liabilities	840,285	$ 0
Accrued Liabilities [Member]
Less current portion (included in accrued liabilities)	$ (87,686)	$ 0