Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands		Jan. 31, 2021	Oct. 31, 2020
Current assets:
Cash and cash equivalents, unrestricted		$ 178,570	$ 149,867
Restricted cash and cash equivalents - short-term	[1]	12,252	9,233
Accounts receivable, net		10,021	9,563
Unbilled receivables		8,243	8,041
Inventories		61,901	50,971
Other current assets		7,422	6,306
Total current assets		278,409	233,981
Restricted cash and cash equivalents - long-term		18,772	32,952
Inventories - long-term	[2]	4,586	8,986
Project assets		164,593	161,809
Property, plant and equipment, net		35,304	36,331
Operating lease right-of-use assets, net		8,524	10,098
Goodwill		4,075	4,075
Intangible assets, net		19,643	19,967
Other assets		18,488	15,339
Total assets		552,394	523,538
Current liabilities:
Current portion of long-term debt		14,594	21,366
Current portion of operating lease liabilities		955	939
Accounts payable		8,034	9,576
Accrued liabilities		10,763	15,681
Deferred revenue		18,728	10,399
Preferred stock obligation of subsidiary			938
Total current liabilities		53,074	58,899
Long-term deferred revenue		25,579	31,501
Long-term preferred stock obligation of subsidiary			18,265
Long-term operating lease liabilities		8,327	9,817
Long-term debt and other liabilities		78,051	150,651
Total liabilities		165,031	269,133
Stockholders’ equity:
Common stock ($0.0001 par value); 337,500,000 shares authorized as of January 31, 2021 and October 31, 2020; 322,412,296 and 294,706,758 shares issued and outstanding as of January 31, 2021 and October 31, 2020, respectively		32	29
Additional paid-in capital		1,538,311	1,359,454
Accumulated deficit		(1,210,156)	(1,164,196)
Accumulated other comprehensive loss		(681)	(739)
Treasury stock, Common, at cost (58,080 and 56,411 shares as of January 31, 2021 and October 31, 2020, respectively)		(462)	(432)
Deferred compensation		462	432
Total stockholders’ equity		327,506	194,548
Total liabilities and stockholders' equity		552,394	523,538
Series B Preferred Stock [Member]
Current liabilities:
Redeemable preferred stock		$ 59,857	$ 59,857

[1] Short-term restricted cash and cash equivalents are amounts expected to be released and categorized as unrestricted cash within twelve months of the balance sheet date.

[2] Long-term inventory includes modules that are contractually required to be segregated for use as replacement modules for specific project assets.