6. Inventories (Details) - USD ($) |
Sep. 30, 2018 |
Mar. 31, 2018 |
Mar. 31, 2017 |
|---|---|---|---|
| Inventory Disclosure [Abstract] | |||
| Raw Materials | $ 1,811,000 | $ 1,619,000 | $ 1,480,000 |
| Finished goods | 1,142,000 | 1,246,000 | 741,000 |
| Inventories, net | $ 2,953,000 | $ 2,865,000 | $ 2,221,000 |
| X | ||||||||||
- References No definition available.
|
| 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
|
| 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
|
| 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
|