Basis of Presentation and Significant Accounting Policies (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended										3 Months Ended	6 Months Ended	12 Months Ended
	Nov. 30, 2013 segments	Dec. 01, 2012	Dec. 03, 2011	Nov. 30, 2013 Patents [Member] Weighted Average [Member]	Nov. 30, 2013 Other Acquired Intangibles [Member] Minimum [Member]	Nov. 30, 2013 Other Acquired Intangibles [Member] Maximum [Member]	Nov. 30, 2013 Building and Building Improvements [Member] Minimum [Member]	Nov. 30, 2013 Building and Building Improvements [Member] Maximum [Member]	Nov. 30, 2013 Machinery and Equipment [Member] Minimum [Member]	Nov. 30, 2013 Machinery and Equipment [Member] Maximum [Member]	Mar. 02, 2013 Adjustment [Member]	Jun. 01, 2013 Adjustment [Member]	Dec. 01, 2012 Adjustment [Member]	Dec. 03, 2011 Adjustment [Member]
Schedule of Consolidated Financial Disclosures [Line Items]
Number of segments	3
Business acquisitions, net of cash acquired	$ 0	$ (5,411)	$ (11,121)										$ 9,082	$ 5,637
Payments on long-term debt, including business acquisition-related seller financing	(4,037)	(10,500)	(7,490)										9,082	5,637
Net cash used in investing activities	(42,090)	(42,128)	(33,527)								2,281	3,811
Net cash provided by (used in) financing activities	132,582	(64,873)	(45,540)								2,281	3,811
Foreign currency transaction gain (loss)	(520)	(847)	44
Restricted cash, noncurrent	1,896	1,839
Components of Inventory [Abstract]
Raw materials	80,741	75,928
Work in process	34,402	34,996
Finished products	103,643	100,327
Inventories	218,786	211,251
Useful life of property, plant and equipment (in years)							15 years	40 years	3 years	15 years
Useful life of intangible assets (in years)				13 years	1 year	30 years
Recognition period of compensation expenses from date of grant (in years)	4 years
Revenue recognized under percentage of completion method	42,002	34,466	40,072
Research and development expense	11,334	11,811	10,989
Letters of credit outstanding, amount	$ 28,541	$ 23,307