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Long Term Retention Plan (Tables) | 6 Months Ended
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Jun. 30, 2013
Compensation And Retirement Disclosure [Abstract] |
Long Term Retention Plans Accrued Compensation Expense | The following table summarizes the 2009, 2010, 2011 and 2012 Long Term Retention Plans (LTRP) accrued compensation expense for the six and three-month periods ended June 30, 2013 and 2012:
|  | Six Months Ended June 30, |  |  | Three Months Ended June 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012(*) |
LTRP 2009 |  | $ | 1,117,678 |  |  | $ | 179,924 |  |  | $ | 709,758 |  |  | $ | (497,895 | )
LTRP 2010 |  |  | 1,017,936 |  |  |  | 532,918 |  |  |  | 624,140 |  |  |  | (51,239 | )
LTRP 2011 |  |  | 1,006,713 |  |  |  | 686,876 |  |  |  | 595,513 |  |  |  | 119,814 |
LTRP 2012 |  |  | 1,155,216 |  |  |  | 792,088 |  |  |  | 657,381 |  |  |  | 359,637 |
(*) | The negative amount included in the table above represents a gain, mainly as a consequence of the changes in the share prices of the Company.

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- Definition Long term retention plan accrued compensation expense. + References No definition available. + Details
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