Earnings Per Share of Common Stock - Additional Information (Detail) - shares |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Earnings Per Share [Abstract] | ||
| Weighted average number of operating partnership units held by noncontrolling limited partners (in shares) | 977,272 | 1,449,258 |
| X | ||||||||||
- Definition Weighted Average Number of Operating Partnership Units Held By Noncontrolling Interest No definition available.
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| X | ||||||||||
- References No definition available.
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