Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012	Jul. 31, 2013
Operating Loss Carryforwards [Line Items]
Effective tax rate (ETR)	8.30%	4.90%
Statutory income tax rate	35.00%
Current deferred tax liabilities	$ 20,000	$ 20,000
Less valuation allowance	14,506,000	968,000
Undistributed earnings of its foreign subsidiaries	1,700,000,000
Research credits	126,000	2,066,000	131,000
Unrecognized tax benefits that would impact ETR	32,000,000
Interest and penalties	4,100,000
Unrecognized tax benefits related to tax positions	10,200,000
Federal [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	9,800,000
Federal net operating loss carryforwards related to share option exercises	4,300,000
Alternative minimum tax credits	6,600,000
Research credits	4,200,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	40,400,000
California [Member]
Operating Loss Carryforwards [Line Items]
Research credits	800,000
Origio [Member]
Operating Loss Carryforwards [Line Items]
Less valuation allowance			1,100,000	1,000,000
Sauflon [Member]
Operating Loss Carryforwards [Line Items]
Less valuation allowance	$ 13,500,000