Note 13 - Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Net earnings	$ 5,028	$ 2,567
Less: Allocation to unvested restricted stock awards	67	11
Net earnings attributable to common shareholders	$ 4,961	$ 2,556
Weighted average common shares outstanding (in shares)	6,965,880	6,939,208