Agreements and Transactions with Related Parties - Due to Affiliates (Details) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Due to Affiliates | ||
| Deferred acquisition fees, including interest | $ 6,584 | $ 6,134 |
| Reimbursable costs | 2,299 | 3,150 |
| Asset management fees payable | 2,250 | 2,497 |
| Accounts payable | 360 | 6 |
| Current acquisition fees | 230 | 1,847 |
| Due to Related Parties | $ 11,723 | $ 13,634 |