Summary of Significant Accounting Policies - Intangible Assets (Details) |
12 Months Ended |
|---|---|
Feb. 29, 2016 | |
| Minimum [Member] | |
| Acquired Finite-Lived Intangible Assets [Line Items] | |
| Useful life | 2 years |
| Maximum [Member] | |
| Acquired Finite-Lived Intangible Assets [Line Items] | |
| Useful life | 19 years |