Note 13 - Stockholders' Equity - Schedule of Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Balance	$ 151,494	$ 132,425
Net earnings	12,784	5,028
Paid in capital – restricted stock	244	123
Issuance of restricted stock	0	0
Repurchase of shares	(82)	(10)
Cash dividends	(289)	(286)
BALANCE	164,151	137,280
Common Stock [Member]
Balance	9,020	8,877
Net earnings	0	0
Paid in capital – restricted stock	0	0
Issuance of restricted stock	105	90
Repurchase of shares	0	0
Cash dividends	0	0
BALANCE	9,125	8,967
Additional Paid-in Capital [Member]
Balance	35,934	35,394
Net earnings	0	0
Paid in capital – restricted stock	244	123
Issuance of restricted stock	(105)	(90)
Repurchase of shares	0	0
Cash dividends	0	0
BALANCE	36,073	35,427
Treasury Stock, Common [Member]
Balance	(13,110)	(13,100)
Net earnings	0	0
Paid in capital – restricted stock	0	0
Issuance of restricted stock	0	0
Repurchase of shares	(82)	(10)
Cash dividends	0	0
BALANCE	(13,192)	(13,110)
Retained Earnings [Member]
Balance	119,650	101,254
Net earnings	12,784	5,028
Paid in capital – restricted stock	0	0
Issuance of restricted stock	0	0
Repurchase of shares	0	0
Cash dividends	(289)	(286)
BALANCE	$ 132,145	$ 105,996