Note 10 - Earnings (Loss) Per Common Share - Components Used to Compute Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net (loss) income available to common shareholders	$ (1,980)	$ 2,504	$ (3,803)	$ 7,808
Dividends and undistributed earnings allocated to participating securities	(1)	(11)	(3)	(39)
(Loss) earnings allocated to common shareholders	$ (1,981)	$ 2,493	$ (3,806)	$ 7,769
Weighted average common shares outstanding (in shares)	9,419,143	9,631,929	9,469,960	9,666,900
Weighted average unvested restricted stock awards (in shares)	(115,322)	(125,338)	(104,622)	(143,326)
Weighted average unallocated ESOP shares (in shares)	(547,056)	(600,065)	(560,214)	(613,183)
Total basic weighted average common shares outstanding (in shares)	8,756,765	8,906,526	8,805,124	8,910,391
Basic weighted average common shares outstanding (in shares)	8,756,765	8,906,526	8,805,124	8,910,391
Dilutive restricted stock awards (in shares)	0	28,356	0	20,013
Total diluted weighted average common shares outstanding (in shares)	8,756,765	8,934,882	8,805,124	8,930,404
Basic and diluted (loss) earnings per common share (in dollars per share)	$ (0.23)	$ 0.28	$ (0.43)	$ 0.87
Diluted (loss) earnings per common share (in dollars per share)	$ (0.23)	$ 0.28	$ (0.43)	$ 0.87