Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Cash flows from operating activities:
Net loss	$ (101,025)	$ (89,107)	$ (77,568)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	4,293	1,868	2,804
Depreciation and amortization	19,872	19,377	12,353
Change in fair value of common stock warrant liability	15,974	37,086
Loss (gain) on extinguishment of debt and financing obligation	11,156	(1,801)
Loss (gain) on Series 1 preferred stock extinguishment	934	(475)
Non-cash interest expense on preferred stock and debt obligations	4,438	7,570	6,097
Operating lease costs	1,545	1,451
Operating lease payments	(1,226)	(1,016)
Impairment of property, plant and equipment and project assets	5,024	2,417	20,360
Unrealized (gain) loss on derivative contract	(478)	314	624
Other non-cash transactions	996	674	511
Decrease (increase) in operating assets:
Accounts receivable	(5,167)	(6,271)	4,842
Unbilled receivables	(3,609)	(5,590)	(4,488)
Inventories	(18,755)	(2,111)	(6,427)
Other assets	(1,529)	(1,297)	2,120
Increase (decrease) in operating liabilities:
Accounts payable	1,988	(7,059)	(173)
Accrued liabilities	317	5,465	2,377
Deferred revenue	(5,186)	1,724	5,996
Net cash used in operating activities	(70,438)	(36,781)	(30,572)
Cash flows from investing activities:
Capital expenditures	(6,353)	(382)	(2,151)
Project asset expenditures	(66,877)	(31,527)	(31,675)
Asset acquisition		(611)	(35,474)
Net cash used in investing activities	(73,230)	(32,520)	(69,300)
Cash flows from financing activities:
Repayment of debt	(98,642)	(30,117)	(48,395)
Proceeds from debt, net of debt discount	10,175	87,757	69,596
Common stock issued for stock plans and related expenses	18	5	23
Payments for taxes related to net share settlement of equity awards	(339)
Payment for early extinguishment of debt	(4,000)
Payment of deferred financing costs	(363)	(2,697)	(3,302)
Contributions received from sale of redeemable noncontrolling interest	3,000
Repayment of Series 1 Preferred Share Obligation	(21,541)
Proceeds from sale of common stock and warrant exercises, net	526,800	173,194	43,573
Payment of preferred dividends and return of capital	(3,200)	(6,475)	(1,840)
Net cash provided by financing activities	411,908	221,667	59,655
Effects on cash from changes in foreign currency rates	(80)	(92)	(244)
Net increase (decrease) in cash, cash equivalents and restricted cash	268,160	152,274	(40,461)
Cash, cash equivalents and restricted cash-beginning of period	192,052	39,778	80,239
Cash, cash equivalents and restricted cash-end of period	460,212	192,052	39,778
Supplemental cash flow disclosures:
Cash interest paid and early prepayment charge	5,765	8,376	4,091
Noncash financing and investing activity:
Warrant exercises		25,994
Accrued purchase of fixed assets, cash to be paid in subsequent period	1,537	39	71
Accrued purchase of project assets, cash to be paid in subsequent period	$ 6,707	$ 502	$ 222