Supplemental Cash Flow Information - Schedule of Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands |
9 Months Ended | |
|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Supplemental Cash Flow Elements [Abstract] | ||
| Reduction of debt through sale of certain real estate properties | $ 0 | $ 30,555 |
| Reduction of debt in exchange for collateral assets | 47,780 | 7,904 |
| Real estate acquired in exchange for loans receivable | 26,609 | 0 |
| Net real estate and other collateral assets surrendered to lender | 22,728 | 7,384 |
| Accrued interest capitalized to principal | 3,584 | 4,686 |
| Accrued performance share dividend rights | $ 340 | $ 459 |