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Supplemental Financial Statement Information (Details) (Land, Tradeport Undeveloped land sale, USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended	21 Months Ended
	Aug. 31, 2013	Dec. 01, 2012	Aug. 31, 2013
Land \| Tradeport Undeveloped land sale
Real estate assets
Revenue from sale of land	$ 2,474
Pretax gain on land sale	2,109
Pretax gain from sale of land recognized		$ 3,942	$ 6,051

The gains (losses) included in results of operations resulting from the sale or disposal of property, plant and equipment, which do not qualify for treatment as discontinued operations. This item does not include any gain (loss) recognized on the sale of oil and gas property or timber property.

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