Note 14 - Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Net earnings	$ 12,784	$ 5,028
Less: Allocation to unvested restricted stock awards	286	67
Net earnings attributable to common shareholders	$ 12,498	$ 4,961
Weighted average common shares outstanding (in shares)	6,982,955	6,965,880