Prepaid Expenses and Other (Tables)

9 Months Ended

Jul. 31, 2011

Prepaid Expenses and Other [Abstract]

Prepaid expenses and other

	October 31,		July 31,
	2010		2011
Prepaid VAT and other taxes	$	46,352	$	37,295
Deferred deployment expense		6,918		13,779
Product demonstration equipment, net		29,449		45,048
Prepaid expenses		15,087		13,537
Restricted cash		12,994		21,566
Contingent consideration		30,195		—
Other non-trade receivables		6,685		10,176
	$	147,680	$	141,401