12. RELATED PARTY TRANSACTIONS (Details) - USD ($)	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Related Party Transaction [Line Items]
Accounts payable	$ 991,000	$ 668,000
Prepaid expenses and other current assets	2,961,000	1,954,000
Related party
Related Party Transaction [Line Items]
Manufacturing services	$ 140,000	500,000	$ 240,000
Operating Cost and Expense, Related Party, Name [Extensible Enumeration]	gsit:WistronNewebCorpMember
Accounts Payable, Current, Related Party, Name [Extensible Enumeration]	gsit:WistronNewebCorpMember
Accounts payable	$ 8,000	0
Prepaid expenses and other current assets	$ 375,000	$ 375,000

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense.

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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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