Represents the number of shareholder approved plans under which shares were available for equity based awards.

No definition available.

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- Definition

Represents the weighted average grant-date fair value of options granted during the reporting period.

+ References

No definition available.

+ Details

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Balance Type:	na
Period Type:	duration

- Definition

Gross number of share options (or share units) granted during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Balance Type:	na
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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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Note 9 - Share-based Compensation (Details Textual)					3 Months Ended		9 Months Ended		12 Months Ended
Note 9 - Share-based Compensation (Details Textual)	Oct. 01, 2024 shares	Sep. 10, 2024 shares	Oct. 13, 2023 shares	Apr. 03, 2023 shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($)	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) shares	Mar. 31, 2024 USD ($) $ / shares	Mar. 31, 2023 USD ($)
Number of Shareholder Approved Share-based Compensation Plans					2		2
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) \| shares					0		50,000
Share-based Compensation Arrangement By Share-based Payment Award, Weighted Average Grant Date Fair Value, Options Granted							$ 8,000
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount					$ 42,000		$ 42,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)							2 years
Share-Based Payment Arrangement, Option [Member] \| Employees [Member]
Share-Based Payment Arrangement, Expense					$ 7,000	$ 24,000	$ 47,000	$ 73,000
Share Price (in dollars per share) \| $ / shares					$ 0.36		$ 0.36		$ 0.29
Share-Based Payment Arrangement, Option [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)					10 years
Restricted Stock [Member] \| Share-Based Payment Arrangement, Nonemployee [Member]
Share-Based Payment Arrangement, Expense							$ 94,000	$ 126,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) \| shares							116,049	159,493
Restricted Stock [Member] \| One Board Member [Member] \| Share-Based Payment Arrangement, Nonemployee [Member]
Share-Based Payment Arrangement, Expense					$ 10,000	10,000	$ 20,000	$ 10,000	$ 40,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) \| shares	13,158	66,667	12,821
Restricted Stock [Member] \| Two Board Members [Member] \| Share-Based Payment Arrangement, Nonemployee [Member]
Share-Based Payment Arrangement, Expense						0		0		$ 15,500
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) \| shares				17,672
Restricted Stock Units (RSUs) [Member] \| Employees [Member]
Share-Based Payment Arrangement, Expense					15,000	$ 20,000	66,000	$ 66,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount					$ 41,000		$ 41,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)							2 months 12 days