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Segment Reporting - Segment Activity 9 Months (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting [Abstract]
Exploration expense Mt Hamilton		$ (6,000)		$ 308,000
Exploration Expense Exploration	76,000	513,000	774,000	1,277,000
Exploration Expense Corporate and Other
Exploration Expense Consolidated	76,000	507,000	774,000	1,585,000
Interest expense (2) Mt Hamilton		41,000		143,000
Interest expense (2) Exploration
Interest expense (2) Corporate and Other		64,000		103,000
Interest expense (2) Consolidated		105,000		246,000
Other loss (income) (1)(3) Mt Hamilton	7,000	16,000	22,000	43,000
Other loss (income) (1)(3) Exploration	(17,000)	(8,000)	771,000	692,000
Other loss (income) (1)(3) Corporate and Other	388,000	1,394,000	99,000	566,000
Other loss (income) (1)(3) Consolidated	378,000	1,402,000	892,000	1,301,000
Pre-tax loss Mt Hamilton	7,000	51,000	22,000	494,000
Pre-tax loss Exploration	59,000	505,000	1,545,000	1,969,000
Pre-tax loss Corporate and Other	188,000	1,258,000	99,000	669,000
Pre-tax loss Consolidated	254,000	1,814,000	1,666,000	3,132,000
Total assets (4)(5) Mt Hamilton			14,012,000	14,216,000
Total assets (4)(5) Exploration			1,195,000	1,768,000
Total assets (4)(5) Corporate and Other			4,610,000	8,415,000
Total assets (4)(5) Consolidated			19,818,000	24,399,000
Capital Expenditures (2) Mt Hamilton			2,124,000	2,589,000
Capital Expenditures (2) Exploration			4,000	3,000
Capital Expenditures (2) Corporate and Other			5,000	51,000
Capital Expenditures (2) Consolidated			$ 2,133,000	$ 2,643,000