Earnings Per Share of Common Stock - Additional Information (Detail) - shares |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
|
| Earnings Per Share [Abstract] | ||||
| Weighted average number of operating partnership units held by noncontrolling limited partners (in shares) | 1,449,258 | 745,978 | 1,449,258 | 491,788 |
| X | ||||||||||
- Definition Weighted Average Number of Operating Partnership Units Held By Noncontrolling Interest No definition available.
|
| X | ||||||||||
- References No definition available.
|