Represents the length of the term associated with the product warrant.

No definition available.

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479837/606-10-45-2

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
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Data Type:	xbrli:integerItemType
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Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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Note 1 - Background and Basis of Presentation (Details Textual)	9 Months Ended	12 Months Ended
	Dec. 31, 2025 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Mar. 31, 2024 USD ($)
Number of Reportable Segments	1
Contract with Customer, Liability, Current	$ 0	$ 96,000	$ 128,000	$ 191,000
Accounts Receivable, after Allowance for Credit Loss	$ 1,456,000	$ 1,499,000		$ 1,343,000
Accounts Receivable [Member] \| Customer Concentration Risk [Member] \| Amazon [Member]
Concentration Risk, Percentage	69.00%	59.00%
Accounts Receivable [Member] \| Customer Concentration Risk [Member] \| Bi-Mart [Member]
Concentration Risk, Percentage	12.00%
Accounts Receivable [Member] \| Customer Concentration Risk [Member] \| Variety Wholesalers [Member]
Concentration Risk, Percentage		19.00%
Microwave Ovens [Member]
Product Warranty, Term (Year)	1 year
Audio Products [Member]
Product Warranty, Term (Year)	90 days