CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 32,244	$ 48,649
Investments (Note 4)	69
Trade receivables	1,640
Inventories (Note 6)	6,060	5,312
Value added tax receivable (Note 7)	1,767	1,317
Prepaid expenses and other assets (Note 5)	2,663	3,119
Total current assets	44,443	58,397
Property, plant and equipment, net (Note 8)	285,092	284,199
Goodwill	70,155	70,155
Prepaid expenses and other assets (Note 5)	263	264
Total assets	399,953	413,015
Current liabilities
Accounts payable and other accrued liabilities (Note 9)	7,114	8,070
Other current liabilities (Note 11)	7,929	7,505
Total current liabilities	15,043	15,575
Asset retirement obligation (Note 10)	3,850	3,781
Deferred tax liability (Note 13)	52,956	55,603
Other long term liabilities (Note 11)	268	288
Total liabilities	72,117	75,247
Commitments and contingencies (Note 17)
Equity (Note 14)
Common stock, $.01 par value, 100,000,000 shares authorized; 35,709,035 and 35,690,035 shares issued and outstanding, respectively	355	355
Additional paid in capital	453,988	453,756
Accumulated deficit	(126,352)	(116,221)
Accumulated other comprehensive loss	(155)	(122)
Parent company's shareholder's equity	327,836	337,768
Total liabilities and equity	$ 399,953	$ 413,015