Fair Value Measurements - Warrant Derivative Liability (Narrative) (Details) |
Apr. 30, 2018
shares
|
|---|---|
| Warrants With Price Protection [Member] | |
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | |
| Number of warrants containing price protection | 62,500 |
| X | ||||||||||
- Definition Number of warrants or rights outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| 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
|