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Goodwill and Intangible Assets - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	May 31, 2013	May 31, 2013
Disclosure Goodwill And Intangible Assets Additional Information [Abstract]
Goodwill, Period Increase (Decrease)	$ 0	$ 0

Change in the carrying value of goodwill. The change could be the result of new goodwill acquired, goodwill impairment, if any, goodwill written off related to the sale of a business or other adjustments to goodwill.

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