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LOSS PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
LOSS PER SHARE |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount on share price (as a percent) | 50.00% |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |
Adjustments to weighted average number of common shares and loss per common share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of common shares |  |  |  |  |  |  |  |  |  |  |  |  | 261,223 | 147,692 | 132,633
Loss per common share (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.26 | $ 0.42 | $ 0.25
Net loss for the year | $ 26,285 | $ 2,654 | $ 20,364 | $ 17,351 | $ 16,304 | $ 23,680 | $ 13,154 | $ 8,734 | $ 7,348 | $ 8,170 | $ 10,703 | $ 6,870 | $ 66,654 | $ 61,872 | $ 33,091
Reported |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjustments to weighted average number of common shares and loss per common share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of common shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 137,046 | 121,987
Loss per common share (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.45 | $ 0.27
Net loss for the year | 26,285 | 2,583 | 21,251 | 19,202 |  |  |  |  |  |  |  |  |  |  |
Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjustments to weighted average number of common shares and loss per common share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of common shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,646 | 10,646
Loss per common share (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (0.03) | $ (0.02)
Net loss for the year |  | $ 71 | $ (887) | $ (1,851) |  |  |  |  |  |  |  |  |  |  |

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