| Condensed Consolidated Balance Sheets (Details - Inventories) - USD ($) $ in Thousands | Sep. 30, 2022 | Mar. 31, 2022 | 
|---|---|---|
| Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] | ||
| Raw materials | $ 1,575 | $ 1,626 | 
| Finished goods | 1,450 | 1,037 | 
| Inventories, net | $ 3,025 | $ 2,663 | 
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- References No definition available. 
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| X | ||||||||||
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- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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| X | ||||||||||
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- Definition Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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