Note 1 - Nature of Business (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022
Income Tax Benefit CARES Act	$ 2,600	$ 200
Cash and Cash Equivalents, at Carrying Value, Total	$ 1,992		$ 4,750