Consolidated Statement Of Comprehensive Income (USD $) | 3 Months Ended | 9 Months Ended | |
|---|---|---|---|
Sep. 20, 2011 | Sep. 21, 2010 | May 31, 2011 | |
| Consolidated Statement Of Comprehensive Income | |||
| Net (loss) earnings for the period | $ (2,274,283) | $ 2,741,279 | $ 6,731,310 |
| Change in defined benefit pension plans, net of tax | 208,323 | 245,084 | 1,884,788 |
| Comprehensive (loss) income | $ (2,065,960) | $ 2,986,363 | $ 8,616,098 |