Note 12 - Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Total earnings (loss) before income taxes	$ 5,961	$ (275,648)	$ (389)
Federal income taxes at statutory rates, amount	$ 1,251	$ (57,886)	$ (82)
Federal income taxes at statutory rates, percent	21.00%	21.00%	21.00%
State income taxes, net of federal benefit, amount	$ 317	$ (2,508)	$ (1,075)
State income taxes, net of federal benefit, percent	5.30%	0.90%	276.30%
Compensation adjustments, amount	$ 2,283	$ 2,738	$ 1,506
Compensation adjustments, percent	38.30%	(1.00%)	(387.10%)
Research and development credit, amount	$ (1,054)	$ (1,093)	$ (1,010)
Research and development credit, percent	(17.70%)	(0.40%)	(259.60%)
Research and development credit, percent	17.70%	0.40%	259.60%
Return to provision adjustment, amount	$ 516	$ (182)	$ (125)
Return to provision adjustment, percent	8.70%	0.10%	32.10%
Subpart F, GILTI, & FDII, amount	$ (484)	$ (412)	$ (127)
Subpart F, GILTI, & FDII, percent	(8.10%)	0.10%	32.60%
Foreign rate differential, amount	$ 2,047	$ (566)	$ (313)
Foreign rate differential, percent	34.30%	0.20%	80.50%
Permanent difference	$ 47	$ 479	$ 33
Permanent difference, percent	0.80%	(0.20%)	(8.50%)
Goodwill impairment, amount	$ 0	$ 32,594	$ 0
Goodwill impairment, percent	0.00%	(11.80%)	0.00%
Valuation allowance	$ 3,019	$ 5,398	$ (126)
Valuation allowance, percent	50.60%	(2.00%)	32.40%
Other, amount	$ (7)	$ 36	$ 0
Other, percent	(0.10%)	0.00%	0.00%
Total income tax expense (benefit)	$ 7,935	$ (21,402)	$ (1,319)
Total income tax (benefit) expense, percent	133.12%	7.76%	339.07%
Effective income tax rate, amount	133.12%	7.76%	339.07%

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to compensation adjustments.

No definition available.