Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Cash flows from operating activities:
Net loss	$ (47,334)	$ (53,903)	$ (51,208)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	3,238	4,585	3,425
Loss (gain) from change in fair value of embedded derivatives	60	91	(14)
Depreciation	8,648	8,518	4,949
Amortization of non-cash interest expense	5,957	6,256	3,207
Deferred income taxes	(3,035)	0	0
Foreign currency transaction losses (gains)	(223)	581	(324)
Other non-cash transactions	760	165	451
Decrease (increase) in operating assets:
Accounts receivable	48,731	(51,276)	30,235
Inventories	31,714	(7,972)	(8,052)
Other assets	(2,264)	(714)	(837)
(Decrease) increase in operating liabilities:
Accounts payable	(19,846)	25,020	(3,019)
Accrued liabilities	(11,345)	(2,290)	1,240
Deferred revenue	1,261	(906)	(26,648)
Net cash provided by (used in) operating activities	16,322	(71,845)	(46,595)
Cash flows from investing activities:
Capital expenditures	(10,028)	(12,351)	(7,726)
Expenditures for long-term project assets	(41,232)	(19,726)	(33,726)
Cash acquired from acquisition	0	633	0
Net cash used in investing activities	(51,260)	(31,444)	(41,452)
Cash flows from financing activities:
Repayment of debt	(16,616)	(8,571)	(30,452)
Proceeds from debt	13,091	17,877	85,935
Payments of deferred finance costs	(352)	(206)	(1,758)
Purchase of non-controlling shares of subsidiary	0	0	(3)
Proceeds from common stock issuance and warrant exercises, net of registration fees	10,455	39,396	70,929
Payment of preferred dividends and return of capital	(4,178)	(4,156)	(4,170)
Common stock issued for stock plans and related expenses	0	86	177
Net cash provided by financing activities	27,717	72,292	120,658
Effects on cash from changes in foreign currency rates	12	129	(35)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(7,209)	(30,868)	32,576
Cash, cash equivalents, and restricted cash-beginning of year	87,448	118,316	85,740
Cash, cash equivalents, and restricted cash-end of year	80,239	87,448	118,316
Series C Preferred Stock [Member]
Cash flows from financing activities:
Net proceeds from issuance of preferred shares	0	27,866	0
Series D Preferred Stock [Member]
Cash flows from financing activities:
Net proceeds from issuance of preferred shares	$ 25,317	$ 0	$ 0