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Segment Reporting (Tables)
6 Months Ended
Jun. 30, 2013
Segment Reporting [Abstract]  
Three Months Ended June 30 2013 Segment Reporting
(in thousands) Three months ended June 30,
  Mt Hamilton Exploration Corporate and Other Consolidated
  2013 2012 2013 2012 2013 2012 2013 2012
Exploration expense $   -   $145  $336  $409  $   -    $   -    $336  $554 
Interest expense (2) -   49  -   -   -   24  -   73 
Other loss (income) (1)(3)       7  15  438  388  (532) (683) (87) (280)
Pre-tax loss (income)    $   7  $209  $774  $  797  $  (532) $  (659) $249  $347 
Six Months Ended June 30 2013 Segment Reporting
(in thousands) Six months ended June 30,
  Mt Hamilton Exploration Corporate and Other Consolidated
  2013 2012 2013 2012 2013 2012 2013 2012
Exploration expense $   -   $314  $698  $764  $   -    $   -    $698  $1,078 
Interest expense (2) -   102  -   -   -   39  -   141 
Other loss (income) (1)(3)      14  27  789  700  (89) (628) 714  99 
Pre-tax loss    $ 14  $443  $1,487  $  1,464  $  (89) $  (589) $1,412  $1,318 
Total assets (4)(5) $13,904  $14,028  $1,019  $1,687  $4,563  $8,917  $19,486  $24,632 
Capital Expenditures (2) $   1,257   $1,044  $     -     $  3   $     -     $     9   $1,257  $1,056