Intangible Assets and Goodwill (Tables)

3 Months Ended

Feb. 28, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule Of Intangible Assets

Intangible assets are comprised of the following significant classes (in thousands):

	February 28, 2013							November 30, 2012
	Gross Carrying Amount		Accumulated Amortization			Net Book Value		Gross Carrying Amount		Accumulated Amortization			Net Book Value
Purchased technology	$	42,231	$	(40,108	)	$	2,123	$	42,520	$	(40,066	)	$	2,454
Customer-related and other	26,114		(23,663		)	2,451		26,477		(23,812		)	2,665
Total	$	68,345	$	(63,771	)	$	4,574	$	68,997	$	(63,878	)	$	5,119

Schedule Of Future Amortization Expense From Intangible Assets Held

Future amortization expense for intangible assets as of February 28, 2013, is as follows (in thousands):

Remainder of 2013	$	1,478
2014	1,245
2015	849
2016	345
2017	345
Thereafter	312
Total	$	4,574