Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016
Cash flows from operating activities:
Net loss	$ (26,923)	$ (27,193)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	2,226	1,663
Loss (gain) from change in fair value of embedded derivatives	25	(8)
Depreciation	4,296	2,342
Interest expense on preferred stock and debt obligations	2,958	1,226
Unrealized foreign exchange (gains) losses	(259)	560
Other non-cash transactions, net	241	303
(Increase) decrease in operating assets:
Accounts receivable	(9,020)	17,001
Inventories	(1,779)	(468)
Project assets	0	(13,380)
Other assets	(366)	571
(Decrease) increase in operating liabilities:
Accounts payable	(4,837)	(1,123)
Accrued liabilities	(5,684)	6,319
Deferred revenue	547	(9,311)
Net cash used in operating activities	(38,575)	(21,498)
Cash flows from investing activities:
Capital expenditures	(8,290)	(2,273)
Project asset expenditures	(10,154)	(4,724)
Cash acquired from asset acquisition	633	0
Net cash used in investing activities	(17,811)	(6,997)
Cash flows from financing activities:
Repayment of debt	(6,299)	(9,095)
Proceeds from debt	17,891	44,802
Payment of deferred financing costs	(119)	(994)
Payment of preferred dividends and return of capital	(2,067)	(2,076)
Cash received for common stock issued for stock plans	50	0
Proceeds from sale of common stock, net	12,785	26,582
Net cash provided by financing activities	22,241	59,219
Effects on cash from changes in foreign currency rates	(38)	202
Net (decrease) increase in cash, cash equivalents and restricted cash	(34,183)	30,926
Cash, cash equivalents and restricted cash-beginning of period	118,316	85,740
Cash, cash equivalents and restricted cash-end of period	84,133	116,666
Supplemental cash flow disclosures:
Cash interest paid	2,821	541
Noncash financing and investing activity:
Common stock issued for Employee Stock Purchase Plan in settlement of prior year accrued employee contributions	50	105
Accrued sale of common stock, cash received in subsequent period	0	440
Assumption of debt in conjunction with asset acquisition	2,289	0
Acquisition of project assets	2,386	0
Accrued purchase of fixed assets, cash paid in subsequent period	1,816	0
Accrued purchase of project assets, cash paid in subsequent period	$ 115	$ 0