SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION - Rollforward (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Carrying cost: | |||
| Balance at beginning of period | $ 2,706,625 | $ 2,692,498 | $ 2,672,101 |
| Additions during period: | |||
| Acquisitions | 553,981 | 13,194 | 11,791 |
| Capital expenditures | 38,592 | 16,426 | 11,550 |
| Other | 59,688 | 0 | 0 |
| Deletions during period: | |||
| Sales and/or transfers to assets held for sale | (53,790) | (15,493) | (2,944) |
| Balance at end of period | 3,305,096 | 2,706,625 | 2,692,498 |
| Accumulated depreciation: | |||
| Balance at beginning of period | 567,353 | 483,017 | 396,401 |
| Additions during period: | |||
| Depreciation and impairment expense | 128,138 | 95,058 | 89,193 |
| Deletions during period: | |||
| Sales and/or transfers to assets held for sale | (30,692) | (10,722) | (2,577) |
| Other | (5,711) | 0 | 0 |
| Balance at end of period | $ 659,088 | $ 567,353 | $ 483,017 |