Note 12 - Income Taxes - Income Tax Benefit and Effective Tax Rate (Details) - USD ($)	3 Months Ended	20 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Aug. 21, 2020
Current tax expense
Deferred tax expense	1,115,000
Income tax expense	$ 1,115,000		$ 0

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration