Goodwill and Acquired Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2013	Dec. 01, 2012
Goodwill [Roll Forward]
Goodwill, beginning of period	$ 241,924	$ 235,530
Acquisitions	0	5,596
Currency translation adjustments	(625)	798
Goodwill, end of period	241,299	241,924
Engine Mobile Filtration [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period	21,593	21,087
Acquisitions	0	0
Currency translation adjustments	275	506
Goodwill, end of period	21,868	21,593
Industrial Environmental Filtration [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period	220,331	214,443
Acquisitions	0	5,596
Currency translation adjustments	(900)	292
Goodwill, end of period	219,431	220,331
Packaging [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period	0	0
Acquisitions	0	0
Currency translation adjustments	0	0
Goodwill, end of period	$ 0	$ 0