Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details)

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Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Costs relating to construction included in accounts payable and accrued expenses $ 17,619,000 $ 15,772,000 $ 32,060,000
Interest paid, net of interest capitalized 57,237,000 $ 60,529,000 $ 56,730,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability 87,679,000    
Non-Cash operating lease liabilities exchanged for operating right-of-use assets 92,354,000    
Accrued straight-line rent liability 5,000,000.0    
Prepaid rent $ 307,000