Note 1 - Background and Basis of Presentation (Tables)

12 Months Ended

Mar. 31, 2026

Notes Tables

Disaggregation of Revenue [Table Text Block]

Disaggregation of revenue (in 000's)	2026		2025
Net revenues by type:
Net product sales	$	5,924	$	10,449
Licensing revenue		386		336
Total:		6,310		10,785
Net revenues by customers: (over 10%)
Amazon.com	$	2,656	$	4,156
Fred Meyer		839		—
Walmart		—		3,322
Total:	$	3,495	$	7,478

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	As of March 31,
	2026			2025			2024
Trade receivables	$	1,300		$	2,606		$	1,368
Allowance for credit losses		(7	)		(1,107	)		(25	)
Accounts receivable, net	$	1,293		$	1,499		$	1,343

Accounts Receivable, Allowance for Credit Loss [Table Text Block]

	As of March 31,
	2026			2025
Opening balance	$	(1,107	)	$	(25	)
Reserve adjustment		1,100			(1,082	)
Allowance for credit losses	$	(7	)	$	(1,107	)

Allowance for Sales and Marketing Expenses [Table Text Block]

Balance at March 31, 2024	$	153
additions		864
usages		(805	)
adjustments		(38	)
Balance at March 31, 2025	$	174
additions		580
usages		(717	)
adjustments		146
Balance at March 31, 2026	$	183

Schedule of Other Nonoperating Income (Expense) [Table Text Block]

	2026			2025
	(In thousands)
Interest expense	$	(15	)	$	(9	)
Interest income		585			896
Interest income, net	$	570		$	887