Stock Option Plan and Stock Based Compensation - Additional Information (Detail) - USD ($)
|
3 Months Ended |
May 31, 2016 |
May 31, 2015 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Unissued common stock reserved |
601,308
|
|
| Stock option award maximum term |
10 years
|
|
| Share based compensation arrangements by share based payment award vesting period maximum |
5 years
|
|
| Number of stock options granted |
0
|
|
| Unrecognized compensation cost related to unvested stock options granted |
$ 8,000
|
|
| Remaining unrecognized compensation cost related to unvested restricted stock |
$ 2,500,000
|
|
| Weighted average remaining requisite service period of the unvested restricted stock awards |
2 years 1 month 6 days
|
|
| Unvested Stock Options [Member] |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Weighted average remaining requisite service period of the unvested stock options |
1 year 6 months
|
|
| Selling, General and Administrative [Member] |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Compensation expense related share based compensation before tax |
$ 300,000
|
$ 300,000
|
| Compensation expense related share based compensation net of tax |
$ 200,000
|
$ 200,000
|