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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, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012
Operating income and (expenses): |  |  |  |
Exploration, property evaluation and holding costs | $ (15,600) | $ (27,536) | $ (21,774) | $ (110,859)
Corporate administration and investor relations | (5,528) | (8,096) | (6,375) | (49,635)
Depreciation and amortization | (1,021) | (589) | (420) | (3,419)
Loss on extinguishment of convertible notes |  |  |  | 1,218
Gain on disposal of mineral property, net (Note 6) |  | 2,934 | 77,803 | 79,766
Write-down of mineral property (Note 6) |  | (250) |  | (250)
Total operating income/(expense) | (22,149) | (33,537) | 49,234 | (85,615)
Non-operating income and (expenses): |  |  |  |
Gain/(loss) on sale of marketable securities | (54) | 192 | 459 | 7,995
Unrealized gain/(loss) on other investments (Note 5) | (48,499) | (50,363) | 37,347 | (61,515)
Write-down of marketable securities (Note 4) | (275) | (39) | (158) | (1,234)
Write-down of plant and equipment (Note 7) | (3,500) | (7,117) |  | (10,617)
Interest income | 36 | 45 | 49 | 2,814
Interest expense | (547) |  | (120) | (4,659)
Other income/(expense) | 127 | 16 | 257 | (1,847)
Total non-operating income/(expense) | (52,712) | (57,266) | 37,834 | (69,063)
Income/(loss) from continuing operations before income taxes | (74,861) | (90,803) | 87,068 | (154,678)
Deferred income tax benefit/(expense) | 15,373 | 20,147 | (35,522) | (2)
Income/(loss) from continuing operations after income taxes | (59,488) | (70,656) | 51,546 | (154,680)
Loss from discontinued operations |  |  |  | (5,192)
Net income/(loss) | (59,488) | (70,656) | 51,546 | (159,872)
Other comprehensive income/(loss): |  |  |  |
Unrealized fair value increase/(decrease) on available-for-sale securities | (61) | (173) | 754 | (59)
Comprehensive income/(loss) | $ (59,549) | $ (70,829) | $ 52,300 | $ (159,931)
Basic: |  |  |  |
Weighted average number of basic shares outstanding (in shares) | 81,813,386 | 74,351,065 | 68,457,885 |
Net income/(loss) per share (in dollars per share) | $ (0.73) | $ (0.95) | $ 0.75 |
Diluted: |  |  |  |
Weighted average number of diluted shares outstanding (in shares) | 81,813,386 | 74,351,065 | 69,295,947 |
Net income/(loss) per share (in dollars per share) | $ (0.73) | $ (0.95) | $ 0.74 |

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