Income Taxes Income Tax (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 335	$ 2,213	$ 6,136	$ 6,999
Income before income taxes	8,684	7,495	27,553	22,114
Effective Income Tax Rate Reconciliation, Percent	3.90%	29.50%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount			$ 2,460