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Benefit Plans - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Amortization related to restricted stock/Unit awards and LTIP Unit Awards $ 1,822 $ 1,507 $ 4,923 $ 4,470
Unrecognized compensation related to unvested restricted stock/Unit awards and LTIP Unit Awards 11,302   $ 11,302  
Weighted average period of unrecognized compensation expected to be recognized     1 year 7 days  
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 Awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock/Unit awards and LTIP Unit Awards issued     252,213  
Fair value of restricted stock/Unit awards and LTIP Unit Awards issued 6,631   $ 6,631  
Vesting period of restricted stock/Unit awards issued     3 years  
Compensation expense recognized at date of grant     $ 1,590 $ 1,590
Management | LTIP Unit Awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock/Unit awards and LTIP Unit Awards issued     195,951  
Fair value of restricted stock/Unit awards and LTIP Unit Awards issued 2,473   $ 2,473  
Vesting period of restricted stock/Unit awards issued     3 years  
Director | Restricted Stock/Unit Awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock/Unit awards and LTIP Unit Awards issued     15,108  
Fair value of restricted stock/Unit awards and LTIP Unit Awards issued $ 420   $ 420  
Vesting period of restricted stock/Unit awards issued     1 year