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Leases - Summary of Quantitative Disclosures for Lessees (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Lease cost: |  |
Interest on lease liabilities (capitalized) | $ 1,029 | $ 225
Total lease cost | 31,489 | 31,549
Cash paid for amounts included in the measurement of lease liabilities: |  |
Investing cash flows from finance leases (capitalized) | $ 567 | 34,922
ROU assets obtained in exchange for new finance lease liabilities |  | $ 23,201
Weighted-average remaining lease term – finance leases | 18 years 8 months 12 days | 19 years 8 months 12 days
Weighted-average discount rate – finance leases | 3.00% | 3.00%
Corporate Office Leases [Member] |  |
Lease cost: |  |
Operating lease cost | $ 3,747 | $ 3,937
Variable lease cost | 1,307 | 1,489
Cash paid for amounts included in the measurement of lease liabilities: |  |
Operating cash flows from Operating leases | $ 5,296 | 5,494
ROU assets obtained in exchange for new operating lease liabilities |  | $ 44,298
Weighted-average remaining lease term – operating leases | 17 years 4 months 24 days | 18 years 1 month 6 days
Weighted-average discount rate – operating leases | 3.20% | 3.20%
Ground Leases [Member] |  |
Lease cost: |  |
Operating lease cost | $ 22,102 | $ 22,198
Variable lease cost | 3,304 | 3,700
Cash paid for amounts included in the measurement of lease liabilities: |  |
Operating cash flows from Operating leases | $ 16,552 | 16,837
ROU assets obtained in exchange for new operating lease liabilities |  | $ 422,018
Weighted-average remaining lease term – operating leases | 55 years 3 months 18 days | 56 years 2 months 12 days
Weighted-average discount rate – operating leases | 5.00% | 5.00%

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- Definition Amount of interest expense on finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918638-209977 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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