Summary of Significant Accounting Policies - Additional Information (Detail) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Jan. 31, 2016
Customer
revenue_source
|
Jan. 31, 2015
Customer
|
Jan. 31, 2016
Customer
revenue_source
|
Apr. 30, 2015
Customer
|
|
| Accounting Policies [Abstract] | ||||
| Number of clients that accounted for more than 10% of account receivables | 0 | 0 | 0 | |
| Number of clients that accounted for more than 10% of revenue | 0 | 0 | ||
| Software as a Service (“SaaS”) | ||||
| Revenue Recognition, Multiple-deliverable Arrangements [Line Items] | ||||
| Revenue sources | revenue_source | 2 | 2 | ||
| Service agreement period | 1 year | |||