Litigation and Other Events (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended
	Feb. 28, 2010	Jun. 30, 2013 site	Oct. 14, 2009 m	Dec. 05, 2011 Rochester [Member] acre claim
Litigation and Other Events (Textual) [Abstract]
Settlement Amount Under Law	$ 3.5
Maximum height for temporary restriction on mining			4,400
Litigation and Other Events (Additional) (Textual)
Number Of Operation Sites, Possible Further Federal Or State Agency Interaction		3
Number of Unpatented Mining Claims				447
Approximate Area of Federal Lands Covering for Unpatented Mining Claims				8,600