Note 18 - Interest Expense, Net - Components of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest related to sale of tax benefits									$ 9,349	$ 9,620	$ 12,413
Interest expense									61,327	67,032	75,447
Less — amount capitalized									(3,287)	(4,075)	(3,206)
Interest Expense	$ 15,828	$ 17,137	$ 18,401	$ 16,023	$ 18,142	$ 17,748	$ 18,859	$ 17,828	$ 67,389	$ 72,577	$ 84,654