Note 2 - Ownership Interests and Advances - Schedule of Results of Operations (Details) - Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 35,447	$ 39,388	$ 106,097	$ 119,270
Gross profit	23,023	23,244	69,124	73,395
Net loss	$ (25,390)	$ (15,650)	$ (77,092)	$ (56,684)