CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets
Cash and cash equivalents	$ 15,020	$ 19,146
Trade receivables		25
Inventories (Note 5)	385	449
Value added tax receivable, net (Note 6)	1,843	1,765
Prepaid expenses and other assets (Note 4)	957	1,091
Total current assets	18,205	22,476
Property, plant and equipment, net (Note 7)	31,445	32,375
Prepaid expenses and other assets (Note 4)		30
Total assets	49,650	54,881
Current liabilities
Accounts payable and other accrued liabilities (Note 8)	1,993	1,365
Other current liabilities (Note 10)	3,978	4,405
Total current liabilities	5,971	5,770
Asset retirement obligation (Note 9)	2,541	2,602
Other long term liabilities (Note 10)	74	53
Total liabilities	8,586	8,425
Commitments and contingencies (Note 16)
Equity (Note 13)
Common stock, $.01 par value, 100,000,000 shares authorized; 43,530,833 shares issued and outstanding for both periods	435	435
Additional paid in capital	494,913	494,647
Accumulated deficit	(454,284)	(448,626)
Shareholder's equity	41,064	46,456
Total liabilities and equity	$ 49,650	$ 54,881