Mineral Properties (Narrative) (Details) (USD $)	1 Months Ended			3 Months Ended		9 Months Ended		172 Months Ended	9 Months Ended		1 Months Ended					1 Months Ended				1 Months Ended						1 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Aug. 31, 2010	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2013 Processing facility construction and wellfield expenditures [Member]	Sep. 30, 2012 Processing facility construction and wellfield expenditures [Member]	Aug. 31, 2008 Nichols Ranch ISR Uranium Project [Member]	Nov. 30, 2005 Nichols Ranch ISR Uranium Project [Member]	Aug. 20, 2008 Nichols Ranch ISR Uranium Project [Member] acre	Sep. 30, 2013 Nichols Ranch ISR Uranium Project [Member] Processing facility construction and wellfield expenditures [Member]	Dec. 31, 2012 Nichols Ranch ISR Uranium Project [Member] Processing facility construction and wellfield expenditures [Member]	Jan. 31, 2008 Powder River Basin area [Member]	Dec. 31, 2005 Powder River Basin area [Member]	Jan. 15, 2008 Powder River Basin area [Member] ha	Jan. 15, 2008 Powder River Basin area [Member] acre	Dec. 31, 2005 Powder River Basin area [Member] Minimum [Member]	Dec. 31, 2005 Powder River Basin area [Member] Maximum [Member]	Aug. 31, 2010 Powder River Basin area [Member] Warrants Issued for Mineral Property [Member]	Feb. 28, 2007 Campbell County [Member]	Jan. 31, 2010 North Reno Creek [Member]	Sep. 18, 2008 North Reno Creek [Member] Lease Agreements [Member] acre	Dec. 31, 2008 Arkose [Member] Lease Agreements [Member]	Aug. 31, 2008 Arkose [Member] Lease Agreements [Member]	Jul. 07, 2009 Arkose [Member] Lease Agreements [Member] acre	Dec. 03, 2008 Arkose [Member] Lease Agreements [Member] acre	Aug. 20, 2008 Arkose [Member] Lease Agreements [Member] acre
Mineral Right Interest Acquired												100.00%				81.00%	100.00%
Number of Mineral Claims Acquired												10					44						138
Payments to Acquire Mineral Rights											$ 22,275	$ 250,000											$ 3,120,000	$ 600,000		$ 83,993	$ 151,828
Royalty Fee Percentage																				6.00%	8.00%
Area of Land													891					33,100	82,000						984			320	1,680	6,073
Warrants Issued During Period, Value						525,461																1,258,000
Class of Warrant or Right, Grants in Period, Net of Forfeitures	4,275,000	1,600,000	2,000,000			5,875,000																2,000,000
Class of Warrant or Right, Grants in Period, Exercise Price	$ 1.60	$ 1.60	$ 3.00																			$ 3.00
Mineral property expenditures				8,292,757	4,481,607	12,762,426	18,117,336	98,440,418	11,797,330	16,886,003
Cumulative Mineral property expenditures														$ 42,831,585	$ 31,034,255