Note 14 - Subsequent Event (Details Textual) - $ / shares		12 Months Ended
	Mar. 21, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Common Stock, Dividends, Per Share, Declared (in dollars per share)		$ 0.21	$ 0.05	$ 0.18
Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.07