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		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue	$ 29,419	$ 36,479	$ 70,397	$ 75,290
Gross profit	21,442	22,653	48,605	47,573
Net loss	$ (23,834)	$ (34,325)	$ (49,328)	$ (65,187)