|
Inventories - Components of Inventory (Detail) (USD $)
In Thousands, unless otherwise specified |
Aug. 31, 2012
|
Aug. 31, 2011
|
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Raw materials | $ 19,773 | $ 14,799 |
| Work in progress | 1,542 | 1,752 |
| Finished goods | 22,357 | 16,182 |
| Total inventories | $ 43,672 | $ 32,733 |