Note 7 - Interest Expense, Net - Components of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest related to sale of tax benefits	$ 1,607	$ 2,565	$ 5,468	$ 6,269
Interest expense	13,299	15,726	41,620	47,214
Less — amount capitalized	(3,214)	(1,154)	(5,933)	(1,922)
Interest Expense	$ 11,692	$ 17,137	$ 41,155	$ 51,561