Accounts Receivable (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Apr. 30, 2017 |
Apr. 30, 2016 |
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| Receivables [Abstract] | ||
| Accounts receivable | $ 4,763,726 | $ 2,501,880 |
| Long term contractual receivable | 657,542 | 127,099 |
| Less: Allowance for doubtful accounts | (328,864) | (449,946) |
| Accounts receivable, net | 5,092,404 | 2,179,033 |
| Bad debt expense | $ 44,320 | $ 170,677 |
| X | ||||||||||
- Definition Current portion of long term contractual receivable. No definition available.
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| X | ||||||||||
- Definition Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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