4. Condensed Consolidated Balance Sheets (June 2018 Note) (Details) - USD ($) |
Jun. 30, 2018 |
Mar. 31, 2018 |
Mar. 31, 2017 |
|---|---|---|---|
| Inventories Details | |||
| Raw materials, net | $ 1,466,000 | $ 1,619,000 | $ 1,480,000 |
| Finished goods, net | 1,134,000 | 1,246,000 | 741,000 |
| Inventories, net | $ 2,600,000 | $ 2,865,000 | $ 2,221,000 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- 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 | ||||||||||
- 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://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- 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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