Note 7 - Earnings Per Share - Calculation of Basic and Diluted Weighted Average Common Shares (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Basic weighted average common shares outstanding (in shares)	6,778,754	6,728,938	6,776,035	6,726,990
Dilutive effect of options and unvested restricted stock (in shares)	0	0	0	0
Diluted weighted average shares outstanding (in shares)	6,778,754	6,728,938	6,776,035	6,726,990