Revenue (Narrative) (Details) - USD ($) |
3 Months Ended | ||
|---|---|---|---|
Jul. 31, 2018 |
Jul. 31, 2017 |
Apr. 30, 2018 |
|
| Disaggregation of Revenue [Line Items] | |||
| Deferred revenue | $ 2,244,151 | $ 1,814,136 | |
| Refunds due students | 1,118,450 | $ 815,841 | |
| Deferred revenue recognized | $ 1,800,000 | ||
| Sales Revenue, Net [Member] | Non-US [Member] | |||
| Disaggregation of Revenue [Line Items] | |||
| Percentage of revenues from students outside the United States | 1.90% | 3.00% | |
| X | ||||||||||
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Current regulatory liabilities generally represent obligations to make refunds to customers for various reasons including overpayment. No definition available.
|
| X | ||||||||||
- Definition The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
|
| X | ||||||||||
- Definition Amount of revenue recognized that was previously reported as deferred or unearned revenue. No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|