Real Estate Investments and Equity Method Investments - Schedule of Real Estate Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Real Estate Properties [Line Items]
Land	$ 213,632	$ 197,777
Land improvements	53,521	44,681
Buildings and improvements	791,719	690,120
Development and construction costs	117,714	61,859
Real estate investments	1,176,586	994,437	$ 908,287
Income producing property
Real Estate Properties [Line Items]
Land	192,677	175,885
Land improvements	53,521	44,681
Buildings and improvements	791,719	690,120
Development and construction costs	0	0
Real estate investments	1,037,917	910,686
Held for development
Real Estate Properties [Line Items]
Land	2,994	680
Land improvements	0	0
Buildings and improvements	0	0
Development and construction costs	0	0
Real estate investments	2,994	680
Construction in progress
Real Estate Properties [Line Items]
Land	17,961	21,212
Land improvements	0	0
Buildings and improvements	0	0
Development and construction costs	117,714	61,859
Real estate investments	$ 135,675	$ 83,071

Capitalized development and construction costs.

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- Definition

Amount of real estate investment property, excluding real estate investments held for sale.

+ References

No definition available.

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- Definition

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6812-107765

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-Section 50
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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount before accumulated deprecation and depletion of additions or improvements to real estate held for productive use. Examples include, but are not limited to, walkways, driveways, fences, and parking lots.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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