Investments - Schedule of Loans Receivable, Net of Premium (Details) - USD ($) $ in Thousands |
Jun. 30, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Investments in and Advances to Affiliates, Schedule of Investments [Abstract] | ||
| Mortgage - principal | $ 93,810 | $ 96,594 |
| Mortgage - premium | 11,215 | 12,452 |
| Mortgages, net | 105,025 | 109,046 |
| Other notes - principal | 4,352 | 379 |
| Total loans receivable, net | $ 109,377 | $ 109,425 |