Note 7 - Income Taxes - Schedule of Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2025	Mar. 31, 2024
Tax benefit at the U.S. federal statutory rate, amount			$ (2,396)	$ (3,239)
Tax benefit at the U.S. federal statutory rate, percent			21.00%	21.00%
Tax rate change, amount			$ 0	$ 0
Tax rate change, percent			0.00%	0.00%
Permanent differences, amount			$ 5	$ 1,697
Permanent differences, percent			(0.05%)	(11.01%)
Return to provision, amount			$ (44)	$ (69)
Return to provision, percent			0.39%	0.45%
Change in state rate, amount			$ 234	$ (190)
Change in state rate, percent			(2.05%)	1.23%
State tax (net of federal benefit), amount			$ (63)	$ (192)
State tax (net of federal benefit)			0.55%	1.24%
Valuation allowance, amount			$ 2,264	$ 1,993
Valuation allowance, percent			(19.84%)	(12.91%)
Effective income tax rate, Total, amount	$ 0	$ 0	$ 0	$ 0
Effective income tax rate			0.00%	0.00%

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 the change in stat rate.

No definition available.