Inventories - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Feb. 28, 2026 |
Feb. 28, 2025 |
Feb. 29, 2024 |
|
| Inventory [Line Items] | |||
| Excess of current costs at FIFO over LIFO stated values | $ 6.1 | $ 5.6 | |
| Amount of allowance for aged obsolete inventory | 1.9 | 1.8 | |
| Inventory write offs | 0.1 | $ 0.1 | |
| Decrease in cost of sales | $ 0.7 | $ 0.6 | |
| Maximum [Member] | |||
| Inventory [Line Items] | |||
| Inventory write offs | $ 0.1 | ||