Goodwill and Acquired Intangible Assets (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Nov. 30, 2013	Dec. 01, 2012	Dec. 03, 2011
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization	$ 5,904	$ 5,890	$ 5,609

The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration