Schedule of Change in Asset Retirement Obligation (Details) (USD $)	3 Months Ended
	Mar. 31, 2013
Accrued Reclamation Costs Schedule Of Change In Asset Retirement Obligation 1	$ 3,597,968
Accrued Reclamation Costs Schedule Of Change In Asset Retirement Obligation 2	3,195,497
Accrued Reclamation Costs Schedule Of Change In Asset Retirement Obligation 3	111,674
Accrued Reclamation Costs Schedule Of Change In Asset Retirement Obligation 4	402,471
Accrued Reclamation Costs Schedule Of Change In Asset Retirement Obligation 5	3,709,642
Accrued Reclamation Costs Schedule Of Change In Asset Retirement Obligation 6	$ 3,597,968