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Benefit Plans - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2016 | Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Amortization related to restricted stock/Unit awards and LTIP Unit Awards | $ 2,963 | $ 2,561
Unrecognized compensation related to unvested restricted stock/Unit awards and LTIP Unit Awards | $ 11,077 |
Weighted average period of unrecognized compensation expected to be recognized | 9 months |
LTIP Unit Awards | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Vesting percentage of LTIP Unit Awards | 0.00% |
LTIP Unit Awards | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Vesting percentage of LTIP Unit Awards | 100.00% |
Management | Restricted Stock/Unit |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Restricted stock/Unit awards and LTIP Unit Awards issued | 308,373 |
Fair value of restricted stock/Unit awards and LTIP Unit Awards issued | $ 6,047 |
Vesting period of restricted stock/Unit awards issued | 3 years |
Compensation expense recognized at date of grant | $ 1,590 | $ 1,250
Management | LTIP Unit Awards |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Restricted stock/Unit awards and LTIP Unit Awards issued | 254,524 |
Fair value of restricted stock/Unit awards and LTIP Unit Awards issued | $ 2,561 |

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