Note 7 - Interest Expense, Net - Components of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Interest related to sale of tax benefits	$ 2,846	$ 2,807	$ 3,704	$ 4,687
Interest expense	15,863	17,025	31,488	33,920
Less — amount capitalized	(308)	(973)	(768)	(1,920)
Interest Expense	$ 18,401	$ 18,859	$ 34,424	$ 36,687