Note 5 - Income Taxes (Tables)

12 Months Ended

Mar. 31, 2026

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The income/(loss) from operations before tax expense (benefit) consisted of the following for the years ended March 31, 2026 and 2025:
	2026			2025
	(In thousands)
Pre-tax (loss)/income
Domestic	$	(4,964	)	$	(5,653	)
Foreign		664			925
Total pre-tax (loss)/income	$	(4,300	)	$	(4,728	)
The income tax provision consisted of the following for the years ended March 31, 2026 and 2025.
	2026			2025
	(In thousands)
Current:
U.S. Federal	$	—		$	3
U.S. State and local		—			—
Foreign		—			—
Total Current Expense		—			3
Deferred:
U.S. Federal		—			—
U.S. State and local		—			—
Foreign		—			—
Total Deferred Expense		—			—
Provision for income tax expense	$	—		$	3

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

A reconciliation of the provision for income to the amount computed by applying the 21% statutory U.S federal income tax rate to income before income taxes after the adoption of ASU 2023-09 as follows:
	As of March 31, 2026
		(In thousands)		(percentage)
U.S. Federal Statutory Tax Rate	$	(901	)	20.9%
State and Local Income Taxes, Net of Federal Income Tax Effect		—		0.0%
Foreign Tax Effects
Hong Kong
Foreign rate differential		(84	)	2.0%
Interest Income		(47	)	1.1%
Other		(12	)	0.3%
Change in valuation allowance		5		(0.1)%
Effect of Cross-Border Tax Laws
Global intangible low-taxed income (GILTI)		8		(0.2)%
SubPart F		121		(2.8)%
Changes in Valuation Allowances		910		(21.2)%
Nontaxable or Nondeductible Items
Other		—		0.0%
Effective Income Tax	$	—		0.0%
As previously disclosed for the years ended March 31, 2025 prior to the adoption of ASU 2023-09, the following is a reconciliation of the difference between the effective income tax rate and federal statutory rate:
	As of March 31, 2025
		(In thousands)		(percentage)
Statutory provision	$	(991	)	20.9%
Foreign subsidiary		(118	)	3.0%
State taxes		(293	)	7.0%
Permanent differences		124		(3.0)%
Adjustment to prior year taxes		(355	)	8.0%
Valuation allowance		1,636		(34.6)%
Provision for income tax expense	$	3		0.0%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	2026			2025
	(In thousands)
Deferred tax assets:
Accounts receivable reserves	$	22		$	327
Inventory		189			175
Accruals		12			10
Net operating loss and credit carry forwards		7,089			5,649
Total deferred tax assets:		7,312			6,161
Valuation allowance		(7,312	)		(6,161	)
Net deferred tax assets:	$	—		$	—

Summary of Operating Loss Carryforwards [Table Text Block]

	Federal NOL's		State NOL's
Loss Year (Fiscal)	Included in DTA (in millions)		Included in DTA (in millions)		Expiration Year (Fiscal)
2016	$	—	$	0.6		State 2036
2017	$	—	$	0.8		State 2037
2018	$	—	$	2.6		State 2038
2019	$	1.9	$	2.7		Federal indefinite/State 2039
2020	$	3.7	$	3.0		Federal indefinite/State 2040
2021	$	4.0	$	3.2		Federal indefinite/State 2041
2022	$	3.4	$	2.9		Federal indefinite/State 2042
2024	$	2.4	$	2.1		Federal indefinite/State 2044
2025	$	3.7	$	3.2		Federal indefinite/State 2045
2026	$	5.3	$	4.4		Federal indefinite/State 2046
Total	$	24.4	$	25.5