Unaudited Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands |
May 31, 2016 |
Feb. 29, 2016 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Allowance for doubtful receivables | $ 1,787 | $ 2,041 |
| Preferred stock, par value | $ 10 | $ 10 |
| Preferred stock, shares authorized | 1,000,000 | 1,000,000 |
| Preferred stock, shares issued | 0 | 0 |
| Common stock, par value | $ 2.5 | $ 2.5 |
| Common stock, shares authorized | 40,000,000 | 40,000,000 |
| Common stock, shares issued | 30,053,443 | 30,053,443 |