Recent Transactions (Summary Of Income (Loss) From Properties Disposed) (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2016 |
Mar. 31, 2015 |
|
| Real Estate Properties [Line Items] | ||
| Total revenues | $ 152,923 | $ 153,715 |
| Depreciation and amortization | (43,063) | (40,802) |
| Income (loss) from properties disposed of | 27,229 | 27,008 |
| Realized gains on dispositions | 58,600 | 144 |
| Total income (loss) from properties disposed of | 62,191 | (2,521) |
| Disposal Group, Not Discontinued Operations [Member] | ||
| Real Estate Properties [Line Items] | ||
| Total revenues | 1,608 | 7,629 |
| Operating and other expenses | (1,379) | (2,524) |
| Depreciation and amortization | (2,797) | (1,685) |
| Interest expense | (626) | (2,710) |
| Income (loss) from properties disposed of | (3,194) | 710 |
| Realized gains on dispositions | 58,600 | 144 |
| Total income (loss) from properties disposed of | $ 55,406 | $ 854 |