Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jan. 31, 2020	Oct. 31, 2019
Current assets:
Cash and cash equivalents, unrestricted	$ 38,254	$ 9,434
Restricted cash and cash equivalents - short-term	8,178	3,473
Accounts receivable, net	5,593	3,292
Unbilled receivables	7,523	7,684
Inventories	58,433	54,515
Other current assets	6,805	5,921
Total current assets	124,786	84,319
Restricted cash and cash equivalents - long-term	27,481	26,871
Inventories - long-term	6,797	2,179
Project assets	147,924	144,115
Property, plant and equipment	39,794	41,134
Operating lease right-of-use assets, net	10,276
Goodwill	4,075	4,075
Intangible assets	20,939	21,264
Other assets	9,327	9,489
Total assets	391,399	333,446
Current liabilities:
Current portion of long-term debt	8,660	21,916
Current portion of operating lease liabilities	1,149
Accounts payable	14,117	16,943
Accrued liabilities	8,958	11,452
Deferred revenue	15,341	11,471
Preferred stock obligation of subsidiary	945	950
Total current liabilities	49,170	62,732
Long-term deferred revenue	29,797	28,705
Long-term preferred stock obligation of subsidiary	16,721	16,275
Long-term operating lease liabilities	9,466
Long-term debt and other liabilities	161,804	90,140
Total liabilities	266,958	197,852
Stockholders’ equity:
Common stock ($0.0001 par value); 225,000,000 shares authorized as of January 31, 2020 and October 31, 2019; 210,965,829 and 193,608,684 shares issued and outstanding as of January 31, 2020 and October 31, 2019, respectively	21	19
Additional paid-in capital	1,180,499	1,151,454
Accumulated deficit	(1,115,240)	(1,075,089)
Accumulated other comprehensive loss	(696)	(647)
Treasury stock, Common, at cost (34,194 and 42,496 shares as of January 31, 2020 and October 31, 2019, respectively)	(437)	(466)
Deferred compensation	437	466
Total stockholders’ equity	64,584	75,737
Total liabilities and stockholders' equity	391,399	333,446
Series B Preferred Stock [Member]
Current liabilities:
Redeemable preferred stock	$ 59,857	$ 59,857