Note 17 - Stockholders' Equity - Restricted Stock Activity (Details) - Restricted Stock Units (RSUs) [Member] - shares	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Granted (in shares)	182,656	120,639
The 2016 Equity Incentive Plan [Member] \| Share-Based Payment Arrangement, Employee [Member]
Outstanding as of April 1, 2024 (in shares)	49,597	184,516
Granted (in shares)	182,656	120,639
Vested (in shares)	(177,780)	(233,294)
Cancelled (in shares)	(15,895)	(22,264)
Outstanding as of March 31, 2025 (in shares)	38,578	49,597

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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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

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ 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)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

+ Details

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