CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents (Note 4)	$ 3,291	$ 8,579
Short-term investments (Note 4)	162	0
Trade receivables	43
Inventories (Note 6)	1,086	1,497
Value added tax receivable, net (Note 7)	654	1,316
Prepaid expenses and other assets (Note 5)	703	835
Total current assets	5,939	12,227
Property, plant and equipment, net (Note 8)	26,208	29,031
Total assets	32,147	41,258
Current liabilities
Accounts payable and other accrued liabilities (Note 9)	1,757	1,639
Other current liabilities (Note 11)	1,413	2,551
Total current liabilities	3,170	4,190
Asset retirement obligation (Note 10)	2,478	2,685
Warrant liability (Note 12)	687	1,554
Other long term liabilities (Note 11)	90	95
Total liabilities	$ 6,425	$ 8,524
Commitments and contingencies (Note 19)
Equity (Note 14)
Common stock, $.01 par value,100,000,000 shares authorized; 53,162,833 shares issued and outstanding for both periods	$ 532	$ 532
Additional paid in capital	484,503	484,197
Accumulated deficit	(459,276)	(451,995)
Accumulated other comprehensive loss	(37)
Shareholders' equity	25,722	32,734
Total liabilities and equity	$ 32,147	$ 41,258

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.