Reclamation Bond Deposit (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Loss Contingencies [Line Items]
Reclamation bond deposit	$ 2,742,804	$ 2,510,804
Current regulatory liabilities	1,000,000	1,350,000
Lexon surety bond cash collateral
Loss Contingencies [Line Items]
Long-term reclamation liability	5,200,000	5,200,000
Bonding fee, percentage	2.50%
Reclamation bond deposit	2,600,000	2,300,000
Regulatory liabilities		2,100,000
Accrued Expenses | Lexon surety bond cash collateral
Loss Contingencies [Line Items]
Current regulatory liabilities	1,000,000	1,400,000
Other Liabilities | Lexon surety bond cash collateral
Loss Contingencies [Line Items]
Noncurrent regulatory liability		$ 700,000