Note 12 - Income Taxes (Details Textual) $ in Thousands	1 Months Ended	9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Deferred Tax Assets, Valuation Allowance, Total	$ 0	$ 0
Deferred Tax Assets, Net of Valuation Allowance, Total	$ 2,951	$ 2,951
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Open Tax Year		2017 2018 2019