Prepaid Expenses and Other (Details) (USD $)	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Prepaid expenses and other
Prepaid VAT and other taxes	$ 37,806,000	$ 44,969,000
Deferred deployment expense	19,449,000	17,839,000
Product demonstration equipment, net	33,144,000	46,996,000
Prepaid expenses	16,477,000	14,769,000
Restricted cash	2,030,000	12,533,000
Other non-trade receivables	8,689,000	6,251,000
Prepaid expenses and other	117,595,000	143,357,000
Depreciation of product demonstration equipment	$ 7,800,000	$ 9,700,000	$ 4,300,000