Nature Of Business And Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Nov. 30, 2011

Nature Of Business And Summary Of Significant Accounting Policies [Abstract]

Allowances Against Accounts Receivable

(In thousands)
Year Ended November 30,	2011			2010			2009
Beginning balance	$	4,980		$	7,650		$	7,944
Charge (benefit) to costs and expenses		1,963			(1,400	)		—
Write-offs and other		(117	)		(981	)		(1,029	)
Translation adjustments		(143	)		(289	)		735
Ending balance	$	6,683		$	4,980		$	7,650

Accumulated Other Comprehensive Loss

(In thousands)
November 30,	2011			2010
Cumulative translation adjustment	$	(8,948	)	$	(4,676	)
Accumulated unrealized losses on investments		(4,108	)		(4,462	)
Total accumulated comprehensive loss, net of tax	$	(13,056	)	$	(9,138	)