Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013
Cash flows from operating activities:
Net loss	$ (33,993)	$ (25,322)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	2,182	1,619
Income from equity investment	0	(46)
(Gain) loss from change in fair value of embedded derivatives	(116)	321
Make whole derivative expense	8,347	0
Depreciation	3,297	3,044
Interest expense on preferred stock obligation	1,466	1,495
Other non-cash transactions, net	71	40
Decrease (increase) in operating assets:
Accounts receivable	9,517	(3,270)
Inventories	424	3,051
Other assets	1,599	(163)
Increase (decrease) in operating liabilities:
Accounts payable	(8,618)	9,193
Accrued liabilities	(11,485)	(2,668)
Deferred revenue	(4,293)	14,817
Net cash (used in) provided by operating activities	(31,602)	2,111
Cash flows from investing activities:
Capital expenditures	(4,120)	(4,017)
Cash acquired from acquisition	0	357
Net cash used in investing activities	(4,120)	(3,660)
Cash flows from financing activities:
Repayment of debt	(5,858)	(285)
Proceeds from debt	250	41,500
Financing costs for convertible debt securities	0	(2,472)
Increase in restricted cash and cash equivalents	(15,120)	632
Payment of preferred dividends and return of capital	(3,264)	(3,339)
Common stock issued for stock plans and related expenses	161	0
Proceeds from sale of common stock, net of registration fees	99,728	(20)
Net cash provided by financing activities	75,897	36,016
Effects on cash from changes in foreign currency rates	67	13
Net increase in cash and cash equivalents	40,242	34,480
Cash and cash equivalents-beginning of period	67,696	46,879
Cash and cash equivalents-end of period	107,938
Supplemental cash flow disclosures:
Cash interest paid	1,728	271
Noncash financing and investing activity:
Common stock issued for Employee Stock Purchase Plan in settlement of prior year accrued employee contributions	106	85
Stock Issued During Period, Value, Conversion of Convertible Securities	33,303	0
Common stock issued for acquisition	0	3,562
Debt Conversion and Make Whole Obligation [Member]
Noncash financing and investing activity:
Stock Issued During Period, Value, Conversion of Convertible Securities	$ 46,186