Note 1 - Description of Business and Accounting Policies - Earnings Per Share (Details) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Basic and diluted (in shares)	20,449	16,640
Dilutive potential common shares (in shares)	0	0
Weighted average common shares outstanding, diluted (in shares)	20,449	16,640