CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents (Note 5)	$ 4,077	$ 8,579
Short-term investments (Note 5)	72
Trade receivables	546
Inventories (Note 7)	330	1,497
Value added tax receivable (Note 8)	400	1,316
Prepaid expenses and other assets (Note 6)	451	835
Total current assets	5,876	12,227
Property, plant and equipment, net (Note 9)	11,125	29,031
Total assets	17,001	41,258
Current liabilities
Accounts payable and other accrued liabilities (Note 10)	1,144	1,639
Convertible note payable (Note 11)	3,702
Derivative liability (Note 11)	488
Deferred revenue (Note 17)	500
Other current liabilities (Note 13)	556	2,551
Total current liabilities	6,390	4,190
Asset retirement and reclamation liabilities (Note 12)	2,546	2,685
Warrant liability (Note 14)	210	1,554
Other long-term liabilities (Note 13)	84	95
Total liabilities	$ 9,230	$ 8,524
Commitments and contingencies (Note 21)
Equity (Note 16)
Common stock, $.01 par value, 100,000,000 shares authorized, 100,000,000 shares authorized; 53,335,333 and 53,162,833 shares issued and outstanding, respectively	$ 534	$ 532
Additional paid in capital	484,742	484,197
Accumulated deficit	(477,378)	(451,995)
Accumulated other comprehensive income loss	(127)
Shareholders' equity	7,771	32,734
Total liabilities and equity	$ 17,001	$ 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.