Note 7 - Interest Expense, Net - Components of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest related to sale of tax benefits	$ 2,394	$ 2,324
Interest expense	19,674	17,166
Less — amount capitalized	(3,052)	(2,217)
Total interest expense, net	$ 19,016	$ 17,273