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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 ($) shares | Jul. 31, 2014 EUR (€) shares | Dec. 31, 2016 USD ($) shares | Dec. 31, 2015 shares | Dec. 31, 2014 shares | Dec. 31, 2013 shares | Dec. 31, 2012 shares
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Number of nonvested shares granted during the period |  |  |  |  |  | 1,035,000 | 135,230 | 117,201 |  |
Number of shares vested during the period |  |  |  |  |  | 783,545 | 78,833 | 89,968 |  |
Shares cancelled |  |  |  |  |  | 1,685 |  | 3,733 |  |
Consultancy fees | $ |  |  |  |  |  | $ 496 |  |  |  |
Exchange rate EUR/USD |  |  |  | 1.34 | 1.34 | 1.05 |  |  |  |
Former Chief Executive Officer | Consultancy agreements |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Number of nonvested shares granted during the period | 5,600 |  |  |  |  |  |  |  |  |
Number Of Installments | 3 |  |  |  |  |  |  |  |  |
Former Chief Executive Officer | Consultancy agreements | First installment |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting date |  |  |  |  |  | Feb. 07, 2012 |  |  |  |
Number of shares vested during the period |  |  |  |  |  |  |  |  |  | 1,866
Former Chief Executive Officer | Consultancy agreements | Second installment |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting date |  |  |  |  |  | Feb. 07, 2013 |  |  |  |
Number of shares vested during the period |  |  |  |  |  |  |  |  | 1,867 |
Former Chief Executive Officer | Consultancy agreements | Third installment |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting date |  |  |  |  |  | Feb. 07, 2014 |  |  |  |
Number of shares vested during the period |  |  |  |  |  |  |  | 1,867 |  |
Former Chief Executive Officer | Renewal consultancy agreements |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Number of nonvested shares granted during the period |  | 5,600 |  |  |  |  |  |  |  |
Number Of Installments |  | 3 |  |  |  |  |  |  |  |
Expiration date of agreement |  |  |  |  |  | Jul. 31, 2014 |  |  |  |
Former Chief Executive Officer | Renewal consultancy agreements | First installment |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting date |  |  |  |  |  | May 03, 2014 |  |  |  |
Number of shares vested during the period |  |  |  |  |  |  |  | 1,866 |  |
Stock issued during period, share based compensation |  |  | 1,866 |  |  |  |  |  |  |
Former Chief Executive Officer | Renewal consultancy agreements | Second installment |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting date |  |  |  |  |  | May 03, 2015 |  |  |  |
Shares cancelled |  |  |  | 1,867 | 1,867 |  |  |  |  |
Former Chief Executive Officer | Renewal consultancy agreements | Third installment |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Vesting date |  |  |  |  |  | May 03, 2016 |  |  |  |
Shares cancelled |  |  |  | 1,867 | 1,867 |  |  |  |  |
Former Chief Executive Officer | Agreement to terminate the consultancy agreement |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |
Severance payment, cash |  |  |  | $ 890 | € 664,000 |  |  |  |  |
Stock issued during period, share based compensation |  |  |  | 33,768 | 33,768 |  |  |  |  |

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