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Transactions with Related Parties - Additional Information - Management and Directors Fees (Details) $ in Thousands | 1 Months Ended | 4 Months Ended | 5 Months Ended | 7 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Feb. 07, 2011 shares | May. 03, 2013 shares | May. 31, 2014 shares | Jul. 31, 2014 USD ($) shares | Jul. 31, 2014 EUR (€) shares | Dec. 31, 2015 USD ($) shares | Dec. 31, 2014 shares | Dec. 31, 2013 shares | Dec. 31, 2012 shares | Jul. 31, 2015
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Number of nonvested shares granted during the period |  |  |  |  |  | 676,150 | 586,009 | 279,333 |  |
Number of shares vested during the period |  |  |  |  |  | 394,167 | 449,842 | 21,333 |  |
Shares cancelled |  |  |  |  |  |  | 18,667 |  |  |
Service management costs | $ |  |  |  |  |  | $ 629 |  |  |  |
Exchange rate EUR/USD |  |  |  |  |  | 1.09 |  |  |  | 1.34
CEO | Consultancy agreements |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Number of nonvested shares granted during the period | 28,000 |  |  |  |  |  |  |  |  |
Number Of Installments | 3 |  |  |  |  |  |  |  |  |
CEO | Consultancy agreements | First installment |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting date |  |  |  |  |  | Feb. 07, 2012 |  |  |  |
Number of shares vested during the period |  |  |  |  |  |  |  |  | 9,333 |
CEO | Consultancy agreements | Second installment |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting date |  |  |  |  |  | Feb. 07, 2013 |  |  |  |
Number of shares vested during the period |  |  |  |  |  |  |  | 9,333 |  |
CEO | Consultancy agreements | Third installment |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting date |  |  |  |  |  | Feb. 07, 2014 |  |  |  |
Number of shares vested during the period |  |  |  |  |  |  | 9,334 |  |  |
CEO | Renewal consultancy agreements |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Number of nonvested shares granted during the period |  | 28,000 |  |  |  |  |  |  |  |
Number Of Installments |  | 3 |  |  |  |  |  |  |  |
Expiration date of agreement |  |  |  |  |  | Jul. 31, 2014 |  |  |  |
CEO | Renewal consultancy agreements | First installment |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting date |  |  |  |  |  | May 03, 2014 |  |  |  |
Number of shares vested during the period |  |  |  |  |  |  | 9,333 |  |  |
Stock issued during period, share based compensation |  |  | 9,333 |  |  |  |  |  |  |
CEO | Renewal consultancy agreements | Second installment |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting date |  |  |  |  |  | May 03, 2015 |  |  |  |
Shares cancelled |  |  |  | 9,333 | 9,333 |  |  |  |  |
CEO | Renewal consultancy agreements | Third installment |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting date |  |  |  |  |  | May 03, 2016 |  |  |  |
Shares cancelled |  |  |  | 9,334 | 9,334 |  |  |  |  |
Former Chief Executive Officer |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Number of nonvested shares granted during the period |  |  |  |  |  |  |  | 18,667 |  |
Former Chief Executive Officer | Agreement to terminate the consultancy agreement |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Severance payment, cash |  |  |  | $ 891 | € 664,000 |  |  |  |  |
Stock issued during period, share based compensation |  |  |  | 168,842 | 168,842 |  |  |  |  |

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