Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Apr. 30, 2021	Apr. 30, 2020
Cash flows from operating activities:
Net loss	$ (64,877)	$ (54,920)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	2,670	863
Depreciation and amortization	10,412	9,102
Change in fair value of common stock warrant liability	15,974	37,617
Non-cash charge (benefit) for extinguishment of preferred stock obligation of subsidiary	934	(475)
Non-cash interest expense on preferred stock and debt obligations	2,475	3,497
Non-cash charge for extinguishment of debt	7,156
Unrealized (gain) loss on derivative contract	(228)	526
Operating lease expense	761	315
Operating lease payments	(586)	(460)
Unrealized foreign currency losses (gains)	873	(948)
Other non-cash transactions, net	372	766
(Increase) decrease in operating assets:
Accounts receivable	(2,584)	(2,825)
Unbilled receivables	(645)	(641)
Inventories	(13,617)	(6,117)
Other assets	(2,930)	(288)
(Decrease) Increase in operating liabilities:
Accounts payable	3,280	(3,868)
Accrued liabilities	(2,864)	777
Deferred revenue, royalty & license fee income	2,262	2,360
Net cash used in operating activities	(41,162)	(14,719)
Cash flows from investing activities:
Capital expenditures	(960)	(55)
Project asset expenditures	(21,212)	(13,633)
Project asset acquisition		(611)
Net cash used in investing activities	(22,172)	(14,299)
Cash flows from financing activities:
Repayment of debt	(91,669)	(21,409)
Proceeds from debt, net of debt discount		87,757
Payment of deferred financing costs		(2,697)
Fees for common stock issued for benefit plans, net of issuances	(15)
Payment of preferred dividends and return of capital	(1,600)	(4,403)
Repayment of preferred stock obligation of subsidiary	(21,541)
Common stock issuance, net of fees	156,368
Proceeds from sale of common stock and warrant exercises, net	923	3,502
Net cash provided by financing activities	42,466	62,750
Effects on cash from changes in foreign currency rates	(2)	(91)
Net (decrease) increase in cash, cash equivalents and restricted cash	(20,870)	33,641
Cash, cash equivalents and restricted cash-beginning of period	192,052	39,778
Cash, cash equivalents and restricted cash-end of period	171,182	73,419
Supplemental cash flow disclosures:
Cash interest paid and early prepayment charge	8,790	3,188
Noncash financing and investing activity:
Operating lease liabilities	1,459	489
Operating lease right-of-use assets	1,459	489
Net noncash reclassifications from project assets to inventory	8,929	1,152
Warrant exercises	21,170	25,994
Accrued purchase of fixed assets, cash to be paid in subsequent period	491	68
Accrued purchase of project assets, cash to be paid in subsequent period	$ 3,078	$ 1,273