CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 44,406	$ 48,649
Investments (Note 4)	241
Trade receivables	1,291
Inventories (Note 6)	3,388	5,312
Value added tax receivable (Note 7)	4,422	1,317
Prepaid expenses and other assets (Note 5)	1,044	3,119
Total current assets	54,792	58,397
Property, plant and equipment, net (Note 8)	280,905	284,199
Assets held for sale (Note 8)	575
Goodwill (Note 10)	11,666	70,155
Prepaid expenses and other assets (Note 5)	163	264
Total assets	348,102	413,015
Current liabilities
Accounts payable and other accrued liabilities (Note 9)	6,232	8,070
Other current liabilities (Note 13)	7,074	7,505
Total current liabilities	13,306	15,575
Asset retirement and reclamation liabilities (Note 11)	2,259	3,781
Deferred tax liability (Note 15)	47,072	55,603
Other long term liabilities (Note 13)	193	288
Total liabilities	62,830	75,247
Commitments and contingencies (Note 19)
Equity (deficit) (Note 16)
Common stock, $.01 par value, 100,000,000 shares authorized; 43,265,833 and 35,690,035 shares issued and outstanding, respectively	433	355
Additional paid in capital	493,175	453,756
Accumulated deficit	(208,246)	(116,221)
Accumulated other comprehensive income (loss)	(90)	(122)
Shareholders' equity	285,272	337,768
Total liabilities and equity	$ 348,102	$ 413,015