Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Revenue:
Products	$ 493,919	$ 495,889	$ 1,428,114	$ 1,389,651
Services	109,013	107,673	325,582	307,675
Total revenue	602,932	603,562	1,753,696	1,697,326
Cost of goods sold:
Products	273,837	275,003	797,283	777,851
Services	59,226	64,586	183,838	191,960
Total cost of goods sold	333,063	339,589	981,121	969,811
Gross profit	269,869	263,973	772,575	727,515
Operating expenses:
Research and development	100,379	97,685	306,342	302,674
Selling and marketing	81,650	81,919	240,833	243,929
General and administrative	29,743	36,285	89,598	98,264
Acquisition and integration costs	2,435	0	3,455	0
Amortization of intangible assets	11,019	11,019	33,057	34,951
Restructuring costs	192	63	8,260	178
Total operating expenses	225,418	226,971	681,545	679,996
Income from operations	44,451	37,002	91,030	47,519
Interest and other income (loss), net	(5,491)	(6,328)	(19,273)	(14,231)
Interest expense	(11,883)	(11,508)	(38,491)	(33,556)
Income (loss) before income taxes	27,077	19,166	33,266	(268)
Provision for income taxes	3,452	3,006	7,767	9,666
Net income (loss)	$ 23,625	$ 16,160	$ 25,499	$ (9,934)
Basic net income (loss) per common share	$ 0.20	$ 0.15	$ 0.23	$ (0.09)
Diluted net income (loss) per potential common share	$ 0.19	$ 0.15	$ 0.22	$ (0.09)
Basic weighted average shares outstanding	118,413	106,236	113,189	105,404
Dilutive weighted average shares outstanding	133,233	120,809	114,549	105,404