Note 13 - Income Taxes - Income Tax Benefit and Effective Tax Rate (Details) - USD ($) $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended	20 Months Ended
	Dec. 31, 2020	Aug. 21, 2020	Dec. 31, 2021	Aug. 21, 2020
Current tax expense	$ (3,176)		$ 0
Deferred tax expense	(1,047)		16,904
Income tax expense (benefit)	$ (4,223)	$ 0	$ 16,904	$ 0