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Condensed Consolidated Statements Of Income/(Loss) And Comprehensive Income/(Loss) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended | 132 Months Ended
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012
Operating income and (expenses): |  |  |  |
Exploration, property evaluation and holding costs | $ (27,536) | $ (21,774) | $ (13,447) | $ (95,259)
Corporate administration and investor relations | (8,096) | (6,375) | (4,283) | (44,107)
Depreciation and amortization | (589) | (420) | (288) | (2,398)
Loss on extinguishment of convertible notes |  |  | 1,633 | 1,218
Gain/(loss) on currency translation | (176) | 109 | 112 | (230)
Gain/(loss) on disposal of mineral property, net (Note 4 and 5) | 2,934 | 77,803 |  | 79,766
Write-down of mineral property | (250) |  |  | (250)
Total operating income/(expense) | (33,713) | 49,343 | (19,539) | (63,696)
Non-operating income and (expenses): |  |  |  |
Gain/(loss) on sale of marketable securities | 192 | 459 | 281 | 8,049
Unrealized gain/(loss) on other investments (Note 4) | (50,363) | 37,347 |  | (13,016)
Write down of marketable securities | (39) | (158) |  | (959)
Write-down of plant and equipment | (7,117) |  |  | (7,117)
Interest income | 45 | 49 | 131 | 2,778
Interest expense |  | (120) | (1,061) | (4,112)
Other income/(expense) | 192 | 148 | 168 | (1,744)
Total non-operating income/(expense) | (57,090) | 37,725 | (481) | (16,121)
Income/(loss) from continuing operations before income taxes | (90,803) | 87,068 | (20,020) | (79,817)
Deferred income tax benefit/(expense) | 20,147 | (35,522) |  | (15,375)
Income/(loss) from continuing operations after income taxes | (70,656) | 51,546 | (20,020) | (95,192)
Loss from discontinued operations |  |  |  | (5,192)
Net income/(loss) | (70,656) | 51,546 | (20,020) | (100,384)
Other comprehensive income/(loss): |  |  |  |
Unrealized fair value increase/(decrease) on available-for-sale securities | (173) | 754 | 252 | 2
Comprehensive income/(loss) | $ (70,829) | $ 52,300 | $ (19,768) | $ (100,382)
Basic: |  |  |  |
Weighted average number of basic shares outstanding (in shares) | 74,351,065 | 68,457,885 | 47,335,571 |
Net income/(loss) per share (in dollars per share) | $ (0.95) | $ 0.75 | $ (0.42) |
Diluted: |  |  |  |
Weighted average number of diluted shares outstanding (in shares) | 74,351,065 | 69,295,947 | 47,335,571 |
Net income/(loss) per share (in dollars per share) | $ (0.95) | $ 0.74 | $ (0.42) |

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