Real Estate - Schedule of Real Estate (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Acquisition And Disposition Of Properties And Discontinued Operations [Abstract]
Land	$ 756,833	$ 756,297
Buildings and improvements	2,740,001	2,740,479
Tenant improvements	179,356	173,686
Construction in progress	6,659	13,617
Right-of-use assets - finance leases	102,050	102,055
Right-of-use assets - operating leases, net	59,386	60,006
Total	3,844,285	3,846,140
Less: Accumulated depreciation and amortization	(513,242)	(490,227)
Operating real estate, net	3,331,043	3,355,913
Real estate under development	237,831	253,402	$ 120,297
Net investments in real estate	$ 3,568,874	$ 3,609,315

Acquisition and disposition of properties and discontinued operations.

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- Definition

Real estate investment property accumulated depreciation and amortization.

+ References

No definition available.

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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
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-SubTopic 10
-Section 50
-Paragraph 1
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- Definition

The current amount of expenditures for a real estate project that has not yet been completed.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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- Definition

Amount of lessee's right to use underlying asset under finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
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- Definition

Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements.

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- Definition

Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Amount of lessee's right to use underlying asset under operating lease.

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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.

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Amount of real estate investment property, net of accumulated depreciation, 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.

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Amount of real estate investments, net of accumulated depreciation, 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; (7) other real estate investments; (8) real estate joint ventures; and (9) unconsolidated real estate and other joint ventures not separately presented.

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- Definition

Carrying amount as of the balance sheet date of improvements having a life longer than one year that were made for the benefit of one or more tenants.

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