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Net Loss Per Share (Tables) | 12 Months Ended
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Dec. 31, 2012
Net Loss Per Share [Abstract] |
Basic and diluted for net loss per share |
(in thousands, except per share amounts) |  | Year ended December 31, |
|  | 2012 |  |  | 2011 |  |  | 2010_ |
BASIC AND DILUTED |  |  |  |  |  |  |  |  |
Weighted average number of |  |  |  |  |  |  |  |  |
common shares outstanding |  |  | 33,003 |  |  |  | 26,784 |  |  |  | 18,293 |
Net loss |  | $ | (9,287 | ) |  | $ | (17,145 | ) |  | $ | (31,626 | )
Net loss per shares basic and diluted |  | $ | (0.28 | ) |  | $ | (0.64 | ) |  | $ | (1.73 | )

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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