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Related Party Transactions (Details Narrative) - USD ($) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Jul. 30, 2020 | Mar. 31, 2020
Related Party Transaction [Line Items] |  |  |  |  |  |
Due to related parties | $ 244,000 |  | $ 244,000 |  |  | $ 502,000
Due from related parties | 0 |  | 0 |  |  | 100,000
Inventory | 8,201,752 |  | 8,201,752 |  |  | $ 7,601,277
Purchase and Sales Agreement [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Inventory |  |  |  |  | $ 685,000 |
Warehouse Facility [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Revenue from related parties | 0 | $ 168,000 | 0 | $ 239,000 |  |
Winglight Pacific Ltd [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Revenue from related parties | 0 | $ 778,000 | 0 | $ 852,000 |  |
Related party gross margin percentage |  | 23.90% |  | 23.70% |  |
Starlight Electronics Co., Ltd [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Service expenses | $ 90,000 | $ 90,000 | $ 181,000 | $ 191,000 |  |

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