Acquistions and Divestitures (Details) In Thousands, unless otherwise specified	6 Months Ended
	May 31, 2014 USD ($)	Jun. 01, 2013 USD ($)	May 31, 2014 CNY	Nov. 30, 2013 USD ($)	May 31, 2014 Plexbond [Member] USD ($)	Nov. 30, 2013 Plexbond [Member] USD ($)	Aug. 31, 2013 Plexbond [Member] USD ($)	May 31, 2014 Plexbond [Member] Customer relationships [Member] USD ($)	Nov. 30, 2013 Plexbond [Member] Customer relationships [Member] USD ($)	May 31, 2014 Plexbond [Member] Non-competition agreements [Member] USD ($)	Nov. 30, 2013 Plexbond [Member] Non-competition agreements [Member] USD ($)
Business Acquisition [Line Items]
Total acquisition cost	$ 230,000		1,400,000		$ 10,390	$ 10,239	$ 10,239
Total purchase price net of cash acquired	151	(1,625)
Purchase price allocation [Abstract]
Current assets					5,179	5,179
Property, plant and equipment					2,275	2,275
Goodwill	264,389			263,103	3,777	3,626
Other intangibles, net					4,094	4,094		3,529	3,529	565	565
Other assets acquired					608	608
Current liabilities					(3,684)	(3,684)
Other liabilities					(1,859)	(1,859)
Total purchase price	230,000		1,400,000		10,390	10,239	10,239
Goodwill purchase price adjustment					151
Total purchase price adjustment					151
Discontinued operations balance sheet items
Other current assets	1,865			1,865
Current assets of discontinued operations	1,865			1,865
Other accrued expenses	5,000			5,000
Current liabilities of discontinued operations	$ 5,000			$ 5,000