Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Cash flows from operating activities:
Net loss	$ (54,920)	$ (37,078)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	863	1,940
Loss from change in fair value of embedded derivatives	0	26
Depreciation and amortization	9,102	4,398
Change in fair value of common stock warrant liability	37,617	0
Gain on Series 1 preferred stock extinguishment	(475)	0
Non-cash interest expense on preferred stock and debt obligations	3,497	2,575
Unrealized loss on derivative contract	526	0
Operating lease expense	315	0
Operating lease payments	(460)	0
Unrealized foreign exchange gains	(948)	(329)
Impairment of property, plant and equipment	0	2,840
Other non-cash transactions, net	766	126
(Increase) decrease in operating assets:
Accounts receivable	(2,825)	(2,171)
Unbilled receivables	(641)	(3,490)
Inventories	(6,117)	(3,468)
Other assets	(288)	560
Increase (decrease) in operating liabilities:
Accounts payable	(3,868)	8,982
Accrued liabilities	777	2,228
Deferred revenue	2,360	4,664
Net cash used in operating activities	(14,719)	(18,197)
Cash flows from investing activities:
Capital expenditures	(55)	(2,091)
Project asset expenditures	(13,633)	(27,275)
Project asset acquisition	(611)	0
Net cash used in investing activities	(14,299)	(29,366)
Cash flows from financing activities:
Repayment of debt	(21,409)	(4,791)
Proceeds from debt, net of debt discount	87,757	28,322
Payment of deferred financing costs	(2,697)	(1,283)
Payment of preferred dividends and return of capital	(4,403)	(1,840)
Common stock issued for stock plans and related expenses	0	31
Proceeds from sale of common stock and warrant exercises, net	3,502	0
Net cash provided by financing activities	62,750	20,439
Effects on cash from changes in foreign currency rates	(91)	(133)
Net increase (decrease) in cash, cash equivalents and restricted cash	33,641	(27,257)
Cash, cash equivalents and restricted cash-beginning of period	39,778	80,239
Cash, cash equivalents and restricted cash-end of period	73,419	52,982
Supplemental cash flow disclosures:
Cash interest paid	3,188	1,638
Noncash financing and investing activity:
Addition of operating lease liabilities	489	0
Addition of operating lease right-of-use assets	489	0
Net noncash reclasses from project assets to inventory	1,152	0
Cashless warrant exercises	25,994	0
Accrued purchase of fixed assets, cash to be paid in subsequent period	68	35
Accrued purchase of project assets, cash to be paid in subsequent period	1,273	893
Series C Preferred Stock [Member]
Noncash financing and investing activity:
Preferred share conversions	0	12,329
Series C preferred share modification	0	6,047
Series D Preferred Stock [Member]
Noncash financing and investing activity:
Preferred share conversions	$ 0	$ 10,639