Basis of Presentation and Significant Accounting Policies (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 03, 2011 segments	Nov. 27, 2010	Nov. 28, 2009
Schedule of Consolidated Financial Disclosures [Line Items]
Number of segments	3
Restricted cash, noncurrent	$ 1,590	$ 2,016
Impairment of long-lived assets	87	276	1,200
Revenue Recognized Under Percentage of Completion Method	40,072	40,500	35,600
Research and Development Expense	10,989	9,817	9,595
Letters of Credit Outstanding, Amount	25,623
Components of Inventory [Abstract]
Raw materials	72,289	67,011
Work in process	30,957	26,219
Finished products	97,028	89,154
Inventories	$ 200,274	$ 182,384
Patents [Member]
Schedule of Consolidated Financial Disclosures [Line Items]
Finite-Lived Intangible Assets, Average Useful Life	13
Other Acquired Intangibles [Member]
Schedule of Consolidated Financial Disclosures [Line Items]
Finite-Lived Intangible Assets, Useful Life, Minimum	2
Finite-Lived Intangible Assets, Useful Life, Maximum	30
Building and Building Improvements [Member]
Schedule of Consolidated Financial Disclosures [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	15
Property, Plant and Equipment, Useful Life, Maximum	40
Machinery and Equipment [Member]
Schedule of Consolidated Financial Disclosures [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	3
Property, Plant and Equipment, Useful Life, Maximum	15