Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 31,063	$ 17,031
Accounts receivable	1,079	1,391
Inventories	3,203	3,487
Prepaid expenses and other current assets	844	731
Total current assets	36,189	22,640
Property, plant and equipment, net	76,507	76,777
Restricted deposits	2,611	2,611
Deposits and other assets	803	803
Total assets	116,110	102,831
Current liabilities:
Accounts payable and accrued liabilities	4,360	7,476
Current portion of secured debt, net		330
Current portion 2017 Notes recorded at fair value	25,194
Derivative warrant liability	10,723	10,493
Other current liabilities	44
Total current liabilities	40,321	18,299
Long-term portion of secured debt, net		153
Long term portion 2017 Notes recorded at fair value		21,565
2022 Notes, net	8,779	14,341
Other long-term liabilities	18	147
Total liabilities	49,118	54,505
Commitments and Contingencies (see Note 11)
Stockholders' Equity
Common stock, $0.01 par value per share; 250,000,000 authorized; 131,769,984 and 21,607,048 shares issued and outstanding at September 30, 2016 and December 31, 2015, respectively	1,317	216
Additional paid-in capital	440,106	387,602
Deficit accumulated	(374,431)	(339,492)
Total stockholders' equity	66,992	48,326
Total liabilities and stockholders' equity	$ 116,110	$ 102,831