Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
Jan. 31, 2015	Jan. 31, 2014
Cash flows provided by (used in) operating activities:
Net loss	$ (18,779)us-gaap_NetIncomeLoss	$ (15,936)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of equipment, furniture and fixtures, and amortization of leasehold improvements	13,772	13,328
Share-based compensation costs	10,807us-gaap_ShareBasedCompensation	11,392us-gaap_ShareBasedCompensation
Amortization of intangible assets	13,219	16,890
Provision for inventory excess and obsolescence	5,787us-gaap_InventoryWriteDown	5,439us-gaap_InventoryWriteDown
Provision for warranty	2,293us-gaap_ProductWarrantyExpense	7,974us-gaap_ProductWarrantyExpense
Other	(10,689)us-gaap_OtherNoncashIncomeExpense	2,175us-gaap_OtherNoncashIncomeExpense
Changes in assets and liabilities:
Accounts receivable	5,362	(31,291)
Inventories	7,755us-gaap_IncreaseDecreaseInInventories	(40,460)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other	(4,473)	(252)
Accounts payable, accruals and other obligations	(9,836)	(14,647)
Deferred revenue	6,920	8,230
Net cash provided by (used in) operating activities	22,138	(37,158)
Cash flows provided by (used in) investing activities:
Payments for equipment, furniture, fixtures and intellectual property	(11,194)	(15,776)
Restricted cash	0	(33)
Purchase of available for sale securities	(50,085)	(54,991)
Proceeds from maturities of available for sale securities	40,000	85,000
Settlement of foreign currency forward contracts, net	9,314	441
Net cash provided by (used in) investing activities	(11,965)	14,641
Cash flows from financing activities:
Payment of long term debt	(625)us-gaap_RepaymentsOfLongTermDebt	0us-gaap_RepaymentsOfLongTermDebt
Payment for debt and equity issuance costs	(60)	0
Payment of capital lease obligations	(2,993)	(762)
Proceeds from issuance of common stock	8,302	7,412
Net cash provided by financing activities	4,624	6,650
Effect of exchange rate changes on cash and cash equivalents	(2,794)	(536)
Net increase (decrease) in cash and cash equivalents	14,797	(15,867)
Cash and cash equivalents at beginning of period	586,720	346,487
Cash and cash equivalents at end of period	598,723	330,084
Supplemental disclosure of cash flow information
Cash paid during the period for interest	8,754us-gaap_InterestPaid	6,333us-gaap_InterestPaid
Cash paid during the period for income taxes, net	2,894us-gaap_IncomeTaxesPaidNet	4,086us-gaap_IncomeTaxesPaidNet
Non-cash investing and financing activities
Purchase of equipment in accounts payable	3,270	4,401
Debt issuance costs in accrued liabilities	$ 187	$ 0

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Name:	us-gaap_RepaymentsOfLongTermCapitalLeaseObligations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

Name:	us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_SupplementalCashFlowInformationAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration