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Amount, after deduction of deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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1. THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Other (Details)	12 Months Ended
	Mar. 31, 2026 USD ($) segment	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)
Property and equipment, net:
Impairment losses on long-lived equipment	$ 0	$ 0	$ 0
Inventories
Minimum months to determine excess inventory	12 months
Inventory write-downs	$ 301,000	305,000	180,000
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments [Abstract]
Number of operating segments \| segment	1
Accounting for stock-based compensation
Dividend yield (as a percent)	0.00%
Comprehensive loss	$ (13,246,000)	(10,639,000)	$ (20,047,000)
Income taxes
Deferred tax assets, net	25,700,000	22,800,000
Valuation allowance	$ 25,384,000	$ 22,794,000
Minimum
Property and equipment, net:
Useful life, intangible assets	5 years
Accounting for stock-based compensation
Expected term	7 years 1 month 6 days	4 years 10 months 24 days	4 years 6 months
Maximum
Property and equipment, net:
Useful life, intangible assets	15 years
Accounting for stock-based compensation
Expected term	7 years 3 months 18 days	5 years	4 years 10 months 24 days
Software \| Minimum
Property and equipment, net:
Useful life, property and equipment	3 years
Software \| Maximum
Property and equipment, net:
Useful life, property and equipment	5 years
Computer and other equipment \| Minimum
Property and equipment, net:
Useful life, property and equipment	5 years
Computer and other equipment \| Maximum
Property and equipment, net:
Useful life, property and equipment	10 years
Furniture and fixtures
Property and equipment, net:
Useful life, property and equipment	7 years