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Income Taxes (Details Textual) - USD ($) | 12 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Income Taxes (Textual) |  |  |
Effective income tax rate | 83.50% | 20.20% | 21.00%
Deferred tax asset |  |  |
Operating loss carryforwards, description | The Company's subsidiaries incorporated in the PRC has unused net operating losses ("NOLs") available for carry forward to future years for PRC income tax reporting purposes up to five years. |  |
Hong Kong [Member] |  |  |
Income Taxes (Textual) |  |  |
Effective income tax rate | 16.50% |  |
PRC [Member] |  |  |
Income Taxes (Textual) |  |  |
Effective income tax rate | 25.00% |  |

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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b),(c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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