Mineral Properties (Narrative) (Details) (USD $)	1 Months Ended			12 Months Ended			175 Months Ended	1 Months Ended			12 Months Ended			1 Months Ended				1 Months Ended						1 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Aug. 31, 2010	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	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	Dec. 31, 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]	Dec. 31, 2011 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] acre	Jan. 15, 2008 Powder River Basin area [Member] ha	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						82,000	33,100						984			320	1,680	6,073
Warrants Issued During Period, Value																				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				$ 18,107,003	$ 22,801,376	$ 12,259,691	$ 103,784,995				$ 16,913,734	$ 21,280,188	$ 9,754,067