Note 3 - Convertible Notes Payable - Schedule of Convertible Notes Payable (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Outstanding, net carrying amount	$ 1,002
Outstanding, net carrying amount	0	$ 1,002
Issuance of Common Stock for Extinguishment of Convertible Debt [Member]
Issuance of common stock for extinguishment of convertible debt	(1,330)	(670)
Issuance of common stock for extinguishment of convertible debt, amortized debt discuont	153	170
Issuance of common stock for extinguishment of convertible debt	(1,177)
The Notes [Member] \| Convertible Debt [Member]
Outstanding, principal amount	1,330
Outstanding, amortized debt discount	(328)
Outstanding, net carrying amount	1,002
Amortization of debt discount	175
Outstanding, principal amount	0	1,330
Outstanding, amortized debt discount	0	(328)
Outstanding, net carrying amount	$ 0	$ 1,002

Represents the debt issuance costs that were converted into common shares.

No definition available.

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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- Definition

Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

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- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Amount, after accumulated amortization, of debt discount (premium).

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