CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Cash flows provided by operating activities:
Net income	$ 2,451	$ 1,874
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of equipment, building, furniture and fixtures, and amortization of leasehold improvements	30,237	27,322
Share-based compensation costs	29,210	22,136
Amortization of intangible assets	40,488	26,439
Provision for inventory excess and obsolescence	20,104	10,834
Provision for warranty	9,563	7,658
Other	8,578	10,266
Changes in assets and liabilities:
Accounts receivable	(4,865)	(46,630)
Inventories	(19,022)	27,952
Prepaid expenses and other	(7,670)	(15,621)
Accounts payable, accruals and other obligations	(29,400)	(28,982)
Deferred revenue	(3,992)	16,694
Net cash provided by operating activities	75,682	59,942
Cash flows used in investing activities:
Payments for equipment, furniture, fixtures and intellectual property	(53,050)	(21,899)
Restricted cash	0	(44)
Purchase of available for sale securities	(199,994)	(130,239)
Proceeds from maturities of available for sale securities	110,000	90,000
Settlement of foreign currency forward contracts, net	(4,834)	10,364
Acquisition of business, net of cash acquired	(32,000)	0
Purchase of cost method investment	0	(2,000)
Net cash used in investing activities	(179,878)	(53,818)
Cash flows provided by (used in) financing activities:
Proceeds from issuance of term loan, net	248,750	0
Payment of long term debt	(15,264)	(8,190)
Payment for debt issuance costs	(3,778)	(247)
Payment of capital lease obligations	(3,769)	(4,745)
Proceeds from issuance of common stock	9,968	9,980
Net cash provided by (used in) financing activities	235,907	(3,202)
Effect of exchange rate changes on cash and cash equivalents	(649)	(3,304)
Net increase (decrease) in cash and cash equivalents	131,062	(382)
Cash and cash equivalents at beginning of period	790,971	586,720
Cash and cash equivalents at end of period	922,033	586,338
Supplemental disclosure of cash flow information
Cash paid during the period for interest	19,620	21,882
Cash paid during the period for income taxes, net	6,991	5,811
Non-cash investing activities
Purchase of equipment in accounts payable	11,437	11,733
Construction in progress subject to build-to-suit lease	21,606	0
Conversion of 4.0% convertible senior notes, due March 15, 2015 into 8,898,387 shares of common stock	0	180,645
Equipment
Non-cash investing activities
Equipment acquired under capital lease	3,012	0
Building
Non-cash investing activities
Equipment acquired under capital lease	$ 8,993	$ 10,032