Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Cash flows from operating activities:
Net loss	$ (45,960)	$ (40,151)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation	1,417	488
Depreciation and amortization	5,604	4,630
Change in fair value of common stock warrant liability	15,974	34,245
Non-cash charge for extinguishment of preferred stock obligation of subsidiary	934	(475)
Non-cash interest expense on preferred stock and debt obligations	1,566	1,591
Non-cash charge for extinguishment of debt	7,156	0
Operating lease expense	378	156
Operating lease payments	(284)	(211)
Unrealized foreign currency losses (gains)	848	(84)
Other non-cash transactions, net	628	308
(Increase) decrease in operating assets:
Accounts receivable	(458)	(2,301)
Unbilled receivables	(3,466)	554
Inventories	(8,602)	(5,780)
Other assets	(954)	(1,141)
(Decrease) Increase in operating liabilities:
Accounts payable	(1,887)	(2,481)
Accrued liabilities	(5,618)	(816)
Deferred revenue, royalty & license fee income	2,407	4,962
Net cash used in operating activities	(30,317)	(6,506)
Cash flows from investing activities:
Capital expenditures	(204)	(64)
Project asset expenditures	(4,387)	(7,624)
Project asset acquisition	0	(611)
Net cash used in investing activities	(4,591)	(8,299)
Cash flows from financing activities:
Repayment of debt	(82,292)	(15,535)
Proceeds from debt, net of debt discount	0	66,862
Payment of deferred financing costs	0	(2,455)
Common stock issued for stock plans and related expenses	8	0
Payment of preferred dividends and return of capital	(800)	(3,385)
Repayment of preferred stock obligation of subsidiary	(21,541)	0
Common stock issuance, net of fees	156,363	0
Proceeds from sale of common stock and warrant exercises, net	654	3,502
Net cash provided by financing activities	52,392	48,989
Effects on cash from changes in foreign currency rates	58	(49)
Net increase in cash, cash equivalents and restricted cash	17,542	34,135
Cash, cash equivalents and restricted cash-beginning of period	192,052	39,778
Cash, cash equivalents and restricted cash-end of period	209,594	73,913
Supplemental cash flow disclosures:
Cash interest paid and early prepayment charge	8,185	558
Noncash financing and investing activity:
Operating lease liabilities	1,336	489
Operating lease right-of-use assets	1,336	489
Net noncash reclassifications from project assets to inventory	2,072	2,756
Warrant exercises	21,170	25,994
Accrued purchase of fixed assets, cash to be paid in subsequent period	47	9
Accrued purchase of project assets, cash to be paid in subsequent period	$ 839	$ 495