Unaudited Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands |
Nov. 30, 2021 |
Feb. 28, 2021 |
|---|---|---|
| Statement Of Financial Position [Abstract] | ||
| Allowance for doubtful receivables | $ 1,265 | $ 961 |
| 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 | $ 2.50 | $ 2.50 |
| Common stock, shares authorized | 40,000,000 | 40,000,000 |
| Common stock, shares issued | 30,053,443 | 30,053,443 |