Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2014	Jan. 31, 2013
Cash flows used in operating activities:
Net loss	$ (15,936)	$ (47,324)
Adjustments to reconcile net loss to net cash used in operating activities:
Loss on extinguishment of debt	0	28,630
Depreciation of equipment, furniture and fixtures, and amortization of leasehold improvements	13,328	14,745
Share-based compensation costs	11,392	8,320
Amortization of intangible assets	16,890	17,838
Provision for inventory excess and obsolescence	5,439	3,580
Provision for warranty	7,974	4,029
Other	2,175	2,641
Changes in assets and liabilities:
Accounts receivable	(31,291)	(49,540)
Inventories	(40,460)	(10,383)
Prepaid expenses and other	(252)	(25,785)
Accounts payable, accruals and other obligations	(14,647)	6,121
Deferred revenue	8,230	1,402
Net cash used in operating activities	(37,158)	(45,726)
Cash flows provided by (used in) investing activities:
Payments for equipment, furniture, fixtures and intellectual property	(15,776)	(12,243)
Restricted cash	(33)	627
Purchase of available for sale securities	(54,991)	(84,918)
Proceeds from maturities of available for sale securities	85,441	50,000
Net cash provided by (used in) investing activities	14,641	(46,534)
Cash flows from financing activities:
Payment for debt and equity issuance costs	0	(3,237)
Payment of capital lease obligations	(762)	(676)
Proceeds from issuance of common stock	7,412	5,820
Net cash provided by financing activities	6,650	1,907
Effect of exchange rate changes on cash and cash equivalents	(536)	176
Net decrease in cash and cash equivalents	(15,867)	(90,353)
Cash and cash equivalents at beginning of period	346,487	642,444
Cash and cash equivalents at end of period	330,084	552,267
Supplemental disclosure of cash flow information
Cash paid during the period for interest	6,333	4,739
Cash paid during the period for income taxes, net	4,086	3,259
Non-cash investing and financing activities
Purchase of equipment in accounts payable	4,401	4,215
Debt issuance costs in accrued liabilities	0	219
Fixed assets acquired under capital leases	$ 0	$ 646