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Basis of Presentation, Consolidation, Investments in Joint Ventures, and Noncontrolling Interests - Additional Information (Details)
$ in Thousands
1 Months Ended 3 Months Ended
Feb. 28, 2018
USD ($)
Mar. 31, 2019
USD ($)
joint_venture
shares
Mar. 31, 2018
USD ($)
Jan. 01, 2019
USD ($)
Dec. 31, 2018
shares
Noncontrolling Interest [Line Items]          
Variable interest entity, number of entities | joint_venture   2      
Variable interest entity, consolidated, carrying amount, assets   $ 115,200      
Variable interest entity, consolidated, carrying amount, liabilities   $ 56,400      
Limited partners' capital account, units outstanding (in shares) | shares   2,112,836     2,035,349
Accounting Standards Update 2016-02          
Noncontrolling Interest [Line Items]          
Right of use asset       $ 27,000  
Redeemable Noncontrolling Interests          
Noncontrolling Interest [Line Items]          
Noncontrolling interest, decrease from redemptions or purchase of interests $ 22,000 $ 0 $ 22,461    
Operating Partnership          
Noncontrolling Interest [Line Items]          
Noncontrolling interest, ownership percentage by parent (as percent)   97.50%     97.60%
Noncontrolling interest, ownership percentage by noncontrolling owners (as percent)   2.50%     2.40%