Restructuring (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2012	Oct. 31, 2011
Restructuring reserve roll forward
Beginning balance	$ 905	$ 2,256
Cash payments	(439)	(1,351)
Ending balance	466	905
Employee Related [Member]
Restructuring reserve roll forward
Beginning balance	856	2,207
Cash payments	(437)	(1,351)
Ending balance	419	856
Asset Write-offs [Member]
Restructuring reserve roll forward
Beginning balance	0	0
Cash payments	0	0
Ending balance	0	0
Other [Member]
Restructuring reserve roll forward
Beginning balance	49	49
Cash payments	(2)	0
Ending balance	$ 47	$ 49