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Transactions with Related Parties - Additional Information - Management (Details) In Thousands, except Share data, unless otherwise specified | 6 Months Ended | 12 Months Ended | 0 Months Ended | 1 Months Ended | 6 Months Ended |  |  |  |  |  |  | 6 Months Ended | 0 Months Ended | 6 Months Ended | 3 Months Ended | 1 Months Ended | 6 Months Ended
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Jun. 30, 2013 | Dec. 31, 2012 | Feb. 07, 2011 CEO | Sep. 30, 2013 CEO | Jun. 30, 2013 CEO USD ($) | Jun. 30, 2013 CEO EUR (€) | Jun. 30, 2012 CEO USD ($) | May 03, 2016 CEO | May 03, 2015 CEO | May 03, 2014 CEO | Feb. 07, 2014 CEO | Feb. 07, 2013 CEO | Feb. 07, 2012 CEO | Jun. 30, 2013 CFO USD ($) | Jun. 30, 2013 CFO EUR (€) | Jun. 30, 2012 CFO USD ($) | May 03, 2013 CEO | Jun. 30, 2013 CEO USD ($) | Jun. 30, 2013 CEO EUR (€) | Apr. 20, 2012 CEO - First Installment | Sep. 30, 2013 CEO - Second Installment | Sep. 30, 2013 CEO - Third Installment | Jun. 30, 2013 CFO USD ($) | Jun. 30, 2013 CFO EUR (€) | Jun. 30, 2013 COO USD ($) | Jun. 30, 2013 COO EUR (€) | Jun. 30, 2012 COO USD ($)
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Executive directors consultancy fees |  |  |  |  | $ 79 |  | $ 116 |  |  |  |  |  |  | $ 25 |  | $ 36 |  | $ 41 |  |  |  |  | $ 22 |  | $ 79 |  | $ 76
Number of shares issued |  |  |  | 18,667 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,333 | 9,333 | 9,334 |  |  |  |  |
Minimum annual consulting fees |  |  |  |  | $ 208 | € 160 |  |  |  |  |  |  |  | $ 73 | € 56 |  |  | $ 227 | € 175 |  |  |  | $ 133 | € 102 | $ 153 | € 118 |
Number of shares vested during the period |  |  |  |  |  |  |  | 9,334 | 9,333 | 9,333 | 9,334 | 9,333 | 9,333 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares granted during the period | 279,333 | 90,667 | 28,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 28,000 |  |  |  |  |  |  |  |  |  |
US Dollar to Euro exchange rate | 1.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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