Note 2 - Ownership Interests In and Advances - Results of Operations (Details) - Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue	$ 35,296	$ 39,461	$ 82,710	$ 83,329
Gross profit	18,730	22,084	48,236	46,673
Net loss	$ (28,866)	$ (35,468)	$ (43,470)	$ (69,084)