Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Costs relating to construction included in accounts payable and accrued expenses | $ 22,814,000 | $ 17,619,000 | $ 15,772,000 |
| Interest paid, net of interest capitalized | $ 58,021,000 | 57,237,000 | $ 60,529,000 |
| 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 | ||
| X | ||||||||||
- Definition Expenditures Included In Construction Trade Payables No definition available.
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| X | ||||||||||
- Definition Non-Cash operating lease liabilities exchanged for operating right-of-use assets No definition available.
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| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for contractual rent under lease arrangements. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of asset related to consideration paid in advance for rent that provides economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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