Summary Of Significant Accounting Policies (Property and Equipment Narrative) (Details)	12 Months Ended
	Oct. 31, 2015
Computer equipment
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	3 years
Software | Minimum
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	4 years
Software | Maximum
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	7 years
Engineering and other equipment | Maximum
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	4 years
Furniture and fixtures
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	7 years
Leasehold improvements | Maximum
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	10 years
Building and Building Improvements
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	39 years