|
Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Aug. 31, 2012
|
Aug. 31, 2011
|
Aug. 31, 2010
|
|
| Statement Of Income And Comprehensive Income [Abstract] | |||
| Change in fair value of derivatives, tax | $ (1,419) | $ 3,690 | $ 530 |
| Loss (gain) from derivative transactions reclassified into earnings from other comprehensive income, tax | (863) | 4,494 | 1,555 |
| Actuarial gain (loss) on post-retirement liabilities, tax | 5,722 | (2,450) | 780 |
| Loss from postretirement liabilities | $ 242 | $ 601 | $ 645 |