Consolidated Balance Sheets - USD ($) $ in Thousands	Oct. 31, 2016	Oct. 31, 2015
Current assets:
Cash and cash equivalents	$ 84,187	$ 58,852
Restricted cash and cash equivalents - short-term	9,437	6,288
Accounts receivable, net of allowance for doubtful accounts of $193 and $544 at October 31, 2016 and 2015, respectively	24,593	60,790
Inventories	73,806	65,754
Project assets current	0	5,260
Other current assets	10,446	6,954
Total current assets	202,469	203,898
Restricted cash and cash equivalents - long-term	24,692	20,600
Project assets noncurrent	47,111	6,922
Property, plant and equipment, net	36,640	29,002
Goodwill	4,075	4,075
Intangible assets	9,592	9,592
Other assets, net	17,558	3,142
Total assets	342,137	277,231
Current liabilities:
Current portion of long-term debt	5,275	7,358
Accounts payable	18,475	15,745
Accrued liabilities	20,900	19,175
Deferred revenue	6,811	31,787
Preferred stock obligation of subsidiary	802	823
Total current liabilities	52,263	74,888
Long-term deferred revenue	20,974	22,646
Long-term preferred stock obligation of subsidiary	12,649	12,088
Long-term debt and other liabilities	81,998	12,998
Total liabilities	167,884	122,620
Redeemable preferred stock (liquidation preference of $64,020 at October 31, 2016 and 2015)	59,857	59,857
Shareholders' equity
Common stock ($.0001 par value; 75,000,000 and 39,583,333 shares authorized at October 31, 2016 and 2015, respectively; 35,174,424 and 25,964,710 shares issued and outstanding at October 31, 2016 and 2015, respectively)	4	3
Additional paid-in capital	1,004,566	934,488
Accumulated deficit	(889,630)	(838,673)
Accumulated other comprehensive loss	(544)	(509)
Treasury stock, Common, at cost (21,527 and 5,845 shares at October 31, 2016 and 2015, respectively)	179	78
Deferred compensation	179	78
Total shareholders' equity	114,396	95,309
Noncontrolling interest in subsidiaries	0	(555)
Total equity	114,396	94,754
Total liabilities and equity	$ 342,137	$ 277,231