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Exploration Expense - Exploration Expense (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Notes to Financial Statements        
Geologic and field expenses $ 334 $ 333 $ 571 $ 608
Administrative 75 81 193 134
Mt. Hamilton exploration and development 145 507 314 1,020
Total exploration costs $ 554 $ 921 $ 1,078 $ 1,762