Note 7 - Net (Loss) Income Per Common Share (Details Textual) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Dilutive Securities, Effect on Basic Earnings Per Share, Total	$ 0	$ 0	$ 0	$ 0
Net Income (Loss) Attributable to Noncontrolling Interest, Total	$ (6,413)	$ 14,357	$ (5,977)	$ 3,877

Amount of Net Income (Loss) attributable to noncontrolling interest.

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