|
Information by Business Segment (Details 3) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2015
|
Dec. 31, 2014
|
Mar. 31, 2014
|
|---|---|---|---|
| Reconciliation of segment assets to total assets | |||
| Assets | $ 3,777,155 | $ 3,670,257 | $ 3,605,897 |
| Segment assets | |||
| Reconciliation of segment assets to total assets | |||
| Assets | 3,110,380 | 2,932,749 | |
| Non-operating property assets | |||
| Reconciliation of segment assets to total assets | |||
| Assets | 496,930 | 503,030 | |
| Other assets | |||
| Reconciliation of segment assets to total assets | |||
| Assets | $ 169,845 | $ 170,118 |