Consolidated Balance Sheets - USD ($)		Oct. 31, 2020	Oct. 31, 2019
Current assets:
Cash and cash equivalents, unrestricted		$ 149,867,000	$ 9,434,000
Restricted cash and cash equivalents - short-term	[1]	9,233,000	3,473,000
Accounts receivable, net		9,563,000	3,292,000
Unbilled receivables		8,041,000	7,684,000
Inventories		50,971,000	54,515,000
Other current assets		6,306,000	5,921,000
Total current assets		233,981,000	84,319,000
Restricted cash and cash equivalents - long-term		32,952,000	26,871,000
Inventories - long-term	[2]	8,986,000	2,179,000
Project assets		161,809,000	144,115,000
Property, plant and equipment, net		36,331,000	41,134,000
Operating lease right-of-use assets, net		10,098,000
Goodwill		4,075,000	4,075,000
Intangible assets, net		19,967,000	21,264,000
Other assets		15,339,000	9,489,000
Total assets		523,538,000	333,446,000
Current liabilities:
Current portion of long-term debt		21,366,000	21,916,000
Current portion of operating lease liabilities		939,000
Accounts payable		9,576,000	16,943,000
Accrued liabilities		15,681,000	11,452,000
Deferred revenue		10,399,000	11,471,000
Preferred stock obligation of subsidiary		938,000	950,000
Total current liabilities		58,899,000	62,732,000
Long-term deferred revenue		31,501,000	28,705,000
Long-term preferred stock obligation of subsidiary		18,265,000	16,275,000
Long-term operating lease liabilities		9,817,000
Long-term debt and other liabilities		150,651,000	90,140,000
Total liabilities		269,133,000	197,852,000
Stockholders’ equity
Common stock ($0.0001 par value); 337,500,000 shares and 225,000,000 shares authorized as of October 31, 2020 and 2019, respectively; 294,706,758 and 193,608,684 shares issued and outstanding as of October 31, 2020 and 2019, respectively)		29,000	19,000
Additional paid-in capital		1,359,454,000	1,151,454,000
Accumulated deficit		(1,164,196,000)	(1,075,089,000)
Accumulated other comprehensive loss		(739,000)	(647,000)
Treasury stock, Common, at cost (56,411 and 42,496 shares as of October 31, 2020 and 2019, respectively)		(432,000)	(466,000)
Deferred compensation		432,000	466,000
Total stockholders’ equity		194,548,000	75,737,000
Total liabilities and stockholders’ equity		523,538,000	333,446,000
Series B Preferred Stock [Member]
Current liabilities:
Redeemable preferred stock		$ 59,857,000	$ 59,857,000

[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.