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Summary of Significant Accounting Policies - Schedule of Changes in Consolidated Balance Sheet and Cash Flow Statement for Adoption of New Accounting Standards (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
Inventories, net | $ 6,024,311 | $ 8,536,934 |
Reserve for sales returns | 896,154 | 726,000 | $ 600,000
Warranty provisions |  |  |
Inventories | 2,538,623 | (2,314,288) |
Reserve for sales returns | $ 170,154 | 126,000 |
Warranty provisions |  |  |
Previously Reported [Member] |  |  |
Inventories, net |  | 8,057,774 |
Reserve for sales returns |  |  |
Warranty provisions |  | 246,840 |
Inventories |  | (2,211,428) |
Reserve for sales returns |  |  |
Warranty provisions |  | 23,140 |
Restatement Adjustment [Member] |  |  |
Inventories, net |  | 479,160 |
Reserve for sales returns |  | 726,000 |
Warranty provisions |  | (246,840) |
Inventories |  | (102,860) |
Reserve for sales returns |  | 126,000 |
Warranty provisions |  | $ (23,140) |

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