Commitments and Contingencies (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Feb. 29, 2016 |
Feb. 28, 2015 |
Feb. 28, 2014 |
|
| Commitments and Contingencies Disclosure [Abstract] | |||
| Minimum operating lease term | 1 year | ||
| Rent expense | $ 13,871,000 | $ 14,071,000 | $ 11,047,100 |