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Insurance Claims and Settlements (Details 1) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 1 Months Ended 3 Months Ended
Nov. 30, 2013
Dec. 01, 2012
Dec. 03, 2011
Nov. 30, 2011
Insurance Claim - August 2011 [Member]
Engine Mobile Filtration [Member]
Aug. 27, 2011
Insurance Claim - August 2011 [Member]
Engine Mobile Filtration [Member]
Insurance Claim [Line Items]          
Gain (loss) on disposition of property         $ (250)
Proceeds from insurance claims $ 0 $ 0 $ 200 $ 200