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Real Estate - Schedule of Real Estate (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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Acquisition And Disposition Of Properties And Discontinued Operations [Abstract] |  |  |
Land | $ 756,297 | $ 710,469 |
Buildings and improvements | 2,740,479 | 2,594,828 |
Tenant improvements | 173,686 | 151,154 |
Construction in progress | 13,617 | 44,092 |
Properties under capital lease |  | 76,965 |
Finance lease, right-of-use asset | 102,055 |  |
Operating lease, right-of-use asset | 60,006 |  |
Total | 3,846,140 | 3,577,508 |
Less: Accumulated depreciation and amortization | (490,227) | (416,657) |
Operating real estate, net | 3,355,913 | 3,160,851 |
Real estate under development, at cost | 253,402 | 120,297 | $ 173,702
Net investments in real estate | $ 3,609,315 | $ 3,281,148 |

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- Definition Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84164758&loc=d3e45014-112735 + Details
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- Definition Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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