Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Cash flows from operating activities:
Net loss	$ (70,251)	$ (42,389)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	1,261	2,325
Loss from change in fair value of embedded derivatives	0	54
Depreciation and amortization	13,828	8,319
Change in fair value of common stock warrant liability	39,311	0
Gain on extinguishment of financing obligation	(1,801)	0
Gain on Series 1 preferred stock extinguishment	(475)	0
Non-cash interest expense on preferred stock and debt obligations	5,385	4,664
Operating lease expense	478	0
Operating lease payments	(737)	0
Unrealized foreign exchange gains	(312)	(23)
Impairment of property, plant and equipment	0	2,840
Unrealized loss on derivative contract	463	432
Other non-cash transactions, net	1,083	876
(Increase) decrease in operating assets:
Accounts receivable	(4,072)	4,309
Unbilled receivables	(2,727)	(5,603)
Inventories	(2,674)	(8,434)
Other assets	(1,697)	1,734
Increase (decrease) in operating liabilities:
Accounts payable	(7,051)	9,350
Accrued liabilities	4,461	(464)
Deferred revenue	950	3,703
Net cash used in operating activities	(24,577)	(18,307)
Cash flows from investing activities:
Capital expenditures	(160)	(1,922)
Project asset expenditures	(23,493)	(21,877)
Project asset acquisition	(611)	(35,474)
Net cash used in investing activities	(24,264)	(59,273)
Cash flows from financing activities:
Repayment of debt	(27,791)	(23,030)
Proceeds from debt, net of debt discount	87,757	55,096
Payment of deferred financing costs	(2,697)	(2,505)
Payment of preferred dividends and return of capital	(5,438)	(1,840)
Common stock issued for stock plans and related expenses	5	23
Proceeds from sale of common stock and warrant exercises, net	64,737	15,424
Net cash provided by financing activities	116,573	43,168
Effects on cash from changes in foreign currency rates	(230)	(28)
Net increase (decrease) in cash, cash equivalents and restricted cash	67,502	(34,440)
Cash, cash equivalents and restricted cash-beginning of period	39,778	80,239
Cash, cash equivalents and restricted cash-end of period	107,280	45,799
Supplemental cash flow disclosures:
Cash interest paid	6,194	2,688
Noncash financing and investing activity:
Addition of operating lease liabilities	899	0
Addition of operating lease right-of-use assets	899	0
Net noncash reclassifications from project assets to inventory	1,152	0
Cashless warrant exercises	25,994	0
Accrued sale of common stock, cash received in a subsequent period	1,096	775
Accrued purchase of fixed assets, cash to be paid in subsequent period	0	281
Accrued purchase of project assets, cash to be paid in subsequent period	1,364	2,719
Series C Preferred Stock [Member]
Noncash financing and investing activity:
Preferred share conversions	0	15,491
Series C preferred share modification	0	6,047
Series D Preferred Stock [Member]
Noncash financing and investing activity:
Preferred share conversions	$ 0	$ 31,158